Emergências reprodutivas de cadelas e gatas em um hospital veterinário universitário / Reproductives emergencies in female dogs and female cats treated in a teaching veterinary hospital

Emergências obstétricas são comuns na rotina clínica de cães e gatos. Dentre as emergências obstétricas uma das mais importantes é a distocia. De modo geral, a distocia ocorre quando há falha no momento do parto ou na expulsão do feto, sendo que a causa mais comum de distocia nas duas espécies é a inércia uterina primária. Outra emergência obstétrica de ocorrência frequente em cadelas e gatas é a piometra. Esta doença é uma infecção que ocorre no útero, causada por alterações hormonais na fase do diestro dos animais. As duas enfermidades (distocia e piometra) podem ter o envolvimento de anticoncepcionais, tanto nas cadelas como nas gatas. Em relação ao tratamento, na maioria das vezes, as distocias em cadelas e gatas são abordadas por meio da realização de cesarianas. Em piometra, a terapêutica mais efetiva é a realização de ovariohisterectomia. Neste estudo, 43 cadelas e 20 gatas com emergências obstétricas foram monitoradas durante 90 dias. Entre as cadelas, 29 (67,44%; 29/43) apresentaram piometra e 13 (30,23%; 13/43) distocia. Além disso, uma cadela apresentou prolapso vaginal. Entre as gatas, 13 apresentaram distocia (65%; 13/20) e sete (35%; 7/20) piometra. Algumas dessas emergências obstétricas foram relacionadas ao uso de anticoncepcional. Assim, os clínicos veterinários devem desencorajar esta prática e incentivar a castração das fêmeas.

Obstetric emergencies are common in the clinical routine of dogs and cats. One of the most important obstetric emergencies is dystocia. In general, dystocia occurs when there is a failure at the parturition time or expulsion of the fetus, and the most common cause of dystocia in both species is primary uterine inertia. Another frequently occurring obstetric emergency in bitches and cats is piometra. This disease is an infection that occurs in the uterus caused by hormonal changes in the diestrus phase of animals. In both diseases (dystocia and pyometra), contraceptives can be involved in female dogs and cats. Regarding the treatment, most of the time, dystocias in bitches and cats are addressed through cesarean sections. In pyometra, the most effective therapy is to perform ovariohysterectomy. In the present study, 43 female dogs and 20 female cats with emergency obstetric were monitored during 90 days. Among bitches, 29 (67.44%; 29/43) had pyometra, and 13 (30.23%; 13/43) showed dystocia. In addition, one female dog presented vaginal prolapse. Among the cats, 13 had dystocia (65%; 13/20) and seven (35%; 7/20) pyometra. Some of these obstetric emergencies were related to contraceptive use. Thus, veterinary clinicians must discourage this practice and encourage the neutering of females.

Controles gestacionales y salud materno-neonatal en gatas / Gestational checking and maternal-neonatal health in cats

El primer punto a tener en cuenta es determinar si el estado de salud de la gata permite incluirla en un plan reproductivo y de ser así cuál es su probabilidad de distocia. Es así que se planifican 3 consultas: la primera durante el celo previo al servicio, la segunda 20 días después del día de los servicios momento en el que se realiza el diagnóstico de gestación y se evalúa el desarrollo de los conceptos gestados si la gata quedó preñada, y la tercera al día 50 de gestación en la cual se realiza un examen de salud y el control del número de fetos gestados mediante Rx. La evaluación del estado de salud de la madre y de los conceptos gestados, así como el desarrollo de los mismos permitirá estimar la fecha probable de parto, y programar la asistencia al parto o una cesárea con mínimos riesgos según sea el caso.(AU)

Fraturas apendiculares em cães e gatos: métodos de tratamento e desfechos / Appendicular fractures in dogs and cats: treatment methods and outcome

O objetivo deste estudo retrospectivo foi identificar a ocorrência de fraturas apendiculares em cães e gatos, os métodos de tratamento e os resultados obtidos com os mesmos, no Hospital Veterinário (HV) da Universidade Regional do Noroeste do Estado do Rio Grande do Sul (Unijuí), no município de Ijuí - RS, no período de abril de 2013 a abril de 2022. De um total de 370 procedimentos cirúrgicos para tratamento de fraturas do esqueleto apendicular, 117 foram em fêmur (31,6%), 77 em tíbia e fíbula (20,8%), 62 em rádio e ulna (16,8%), 49 em úmero (13,2%), 45 em pelve (12,2%), 7 em metatarso e metacarpo (1,9%), 7 em tarso e carpo (1,9%), 4 em escápula (1,1%) e 2 em falanges (0,5%). O número de procedimentos foi superior ao número de animais, pois alguns apresentavam mais de uma fratura em diferentes ossos. Entre os 329 animais reportados neste estudo, concluiu-se que a principal causa de fraturas em cães e gatos foi atropelamento, sendo os filhotes os mais acometidos e as fraturas femorais as mais frequentes. Os fixadores esqueléticos externos destacaram-se como o método mais utilizado e o desfecho das osteossínteses foi satisfatório, sendo que a maior casuística correspondeu a fraturas cicatrizadas.

This retrospective study aimed to identify the occurrence of appendicular fractures in dogs and cats, treatment methods, and results obtained with them, at the Veterinary Hospital (VH) of the Regional University of the Northwest of the State of Rio Grande do Sul (Unijuí), in the city of Ijuí/RS, from April 2013 to April 2022. A total of 370 surgical procedures for the treatment of fractures of the appendicular skeleton was performed: 117 were in the fêmur (31,6%), 77 in the tíbia and fíbula (20,8%), 62 in the radius and ulna (16,8%), 49 in the humerus (13,2%), 45 in pélvis (12,2%), 7 in metatarsus and metacarpus (1,9%), 7 in tarsus and carpus (1,9%), 4 in the scapula (1,1%), and 2 in phalanges (0,5%). The number of procedures was higher than the number of animals, as some had more than one fracture in different bones. Among the 329 animals reported in this study, it was concluded that the main cause of fractures in dogs and cats was being run over, puppies were the most affected, and femoral fractures were the most frequent. External skeletal fixators stood out as the most used method and the outcome of osteosynthesis was satisfactory, with the largest number of cases corresponding to healed fractures.

Comparison of efficiency between two artificial insemination methods using fresh semen in domestic cat (Felis Catus) / Comparação da eficiência entre dois métodos de inseminação artificial utilizando sêmen fresco em gata doméstica (Felis Catus)

This study aimed to compare domestic cats' pregnancy rates using fresh semen for the bilateral intrauterine insemination (BIUI) method and the novel uterine body insemination (UBI) method. Queens received a single injection of equine chorionic gonadotropin (eCG) (200 IU; IM) to induce ovarian follicular development and, after 83 h, an injection of human chorionic gonadotropin (hCG) (100 IU; IM) for final oocyte maturation and ovulation induction. Thirty-four hours after hCG administration, 3 × 106fresh spermatozoa were used for insemination by the BIUI (n = 8 queens) or by the UBI (n = 7 queens) techniques,respectively. Pregnancy rates were 75.00% (6/8) by BIUI and 42.85% (3/7) by the UBI method. Themean litter size was 3.0 ± 0.86 for the BIUI, and 2.0 ± 1.0 for the UBI method. Spontaneous abortion occurred on day 35 of pregnancy in one queen following the UBI method. Our findings showed that the BIUI of queens with fresh semen resulted in higher pregnancy rates than the novel UBI method; also, acceptable pregnancy rates were achieved following BIUI with fresh semen in the domestic cat.(AU)

O objetivo deste estudo foi comparar as taxas de prenhez em gatas domésticas usando sêmen fresco para o método de inseminação intrauterina bilateral (BIUI) e o novo método de inseminação do corpo uterino (UBI). As gatas receberam uma única injeção de gonadotrofina coriônica equina (eCG) (200 UI; IM) para induzir o desenvolvimento folicular ovariano e, após 83 h, uma injeção de gonadotrofina coriônica humana (hCG) (100 UI; IM) para maturação final do oócito e ovulação indução. Trinta e quatro horas após a administração de hCG, 3 × 106 espermatozoides frescos foram utilizados para inseminação pelas técnicas de BIUI (n = 8 gatas) ou UBI (n = 7 gatas), respectivamente. As taxas de gravidez foram de 75,00% (6/8) pela BIUI e 42,85% (3/7) pelo método UBI. O tamanho médio da ninhada foi de 3,0 ± 0,86 para o método BIUI e 2,0 ± 1,0 para o método UBI. Aborto espontâneo ocorreu no dia 35 de gestação em uma gata seguindo o método UBI. Nossos achados mostraram que a BIUI de gatas com sêmen fresco resultou em maiores taxas de prenhez do que o novo método UBI; também, taxas de prenhez aceitáveis foram alcançadas após BIUI com sêmen fresco no gato doméstico.(AU)

Clinical, hematological, biochemical, and histopathological evaluations in domestic cats (Felis catus) infected by Leishmania infantum / Avaliação clínica, hematológica, bioquímica e histopatológica em gatos domésticos (Felis catus) infectados por Leishmania infantum

A high frequency of feline leishmaniasis has been reported in several countries. However, much information about disease progression in cats still needs to be clarified. This study aimed to verify the occurrence of clinicopathological changes in cats infected with Leishmania infantum. A total of 60 cats were divided into three groups of 20 animals each: control, suspects, and infected. All 60 cats underwent blood count and biochemical analyses. Serum samples from 20 animals with leishmaniasis were also used to diagnose feline immunodeficiency virus and feline leukemia virus. A total of five of the infected animals underwent necropsy for a histopathological study. The main clinical findings in cats with leishmaniasis were lymphadenomegaly (65%), alopecia (55%), ulcerative skin lesions and weight loss (40%), skin nodules (25%), a significant reduction in red blood cells (p=0.0005) and hematocrit (p=0.0007), hyperplasia in spleen 4/5(80%), presence of Leishmania in the spleen 2/5(40%), hepatitis 3/5(60%), liver degeneration 4/5(80%) and inflammatory nephropathy 3/5(60%). It was concluded that cats with leishmaniasis presented significant clinical, hematological, and histopathological alterations compatible with L. infantum infection. The observation of lymphadenomegaly, weight loss, skin lesions and low concentration of red blood cells, contributes significantly to the diagnosis and analysis of progression of feline leishmaniasis.(AU)

Uma alta frequência de leishmaniose felina tem sido relatada em vários países. No entanto, muitas informações sobre a progressão da doença em gatos ainda precisam ser esclarecidas. Este estudo teve como objetivo verificar a ocorrência de alterações clinicopatológicas em gatos infectados por Leishmania infantum. Um total de 60 gatos foi dividido em três grupos de 20 animais cada: controle, suspeitos e infectados. Todos os 60 gatos foram submetidos à hemograma e testes bioquímicos. Amostras de soro de 20 animais com leishmaniose também foram utilizadas para diagnosticar o vírus da imunodeficiência felina e o vírus da leucemia felina. Um total de cinco dos animais infectados foram necropsiados para estudo histopatológico. Os principais achados clínicos nos gatos com leishmaniose foram linfadenomegalia (65%), alopecia (55%), lesões ulcerativas na pele e emagrecimento (40%), nódulos cutâneos (25%), redução significativa de hemácias (p=0,0005) e hematócrito (p=0,0007), hiperplasia no baço 4/5(80%), presença de Leishmania no baço 2/5(40%), hepatite 3/5(60%), degeneração hepática 4/5(80%) e nefropatia inflamatória 3/5(60%). Concluiu-se que gatos com leishmaniose apresentaram alterações clínicas, hematológicas e histopatológicas significativas compatíveis com infecção por L. infantum. A observação de linfadenomegalia, emagrecimento, lesões cutâneas e baixa concentração de hemácias, contribui significativamente para o diagnóstico e análise da progressão da leishmaniose felina.(AU)

Metastatic gallbladder adenocarcinoma in a cat

Biliary neoplasms are uncommon in cats and affect older animals. A 12-year-old female crossbreed cat showed prostration, lethargy, apathy, and severe jaundice. Ultrasonography showed distention of the gallbladder associated with severe obstruction of the bile ducts with thickening of the biliary wall, forming amorphous masses of irregular contour and heterogeneous appearance directed to the lumen measuring up to 2 cm. Necropsy showed a gallbladder with a yellowish and soft nodule measuring 3 × 3 cm, compressing the extrahepatic bile duct, occluding the passage of bile. There were also firm, yellowish multifocal to coalescing nodules in the liver, ranging from 0.5 to 1 cm, affecting 10% of the organ, in addition to lungs with firm, yellowish multifocal nodules ranging from 0.2 to 0.5 cm, affecting 20% of the organ. Histologically, gallbladder and bile ducts had malignant epithelial neoplastic proliferation, which was organized into multiple papillary and ductal projections, separated by moderate fibrovascular stroma compatible with gallbladder adenocarcinoma. The liver and lungs also contained neoplastic structures with a ductal appearance and papilliform projections identical to those observed in the gallbladder. The immunohistochemical examination (IHC) showed intense positive staining of epithelial neoplastic cells for pan-cytokeratin (AE1/AE3) and no staining for vimentin (Clone V9). The diagnosis of gallbladder adenocarcinoma with metastasis in the liver and lungs was established based on the clinical, macroscopic, histopathological, and immunohistochemical findings.(AU)

Analgesia perioperatória de gatas submetidas a ovariohisterectomia eletiva - uso preemptivo de carprofeno ou grapiprant / Perioperative analgesia in cats undergoing elective ovariohysterectomy - preemptive use of carprofen or grapiprant

Background: The nonsteroidal anti-inflammatory drugs (NSAIDs) exert their analgesic effect through peripheral inhibition of prostaglandin synthesis and a variety of other peripheral and central mechanisms. However, NSAIDs are associated with some adverse effects, mainly related to the gastrointestinal, renal, and hepatic systems, highlighting the need for research to develop safer drugs. Therefore, the aim of this study was to evaluate the efficacy of preoperative oral administration of carprofen or grapiprant in female cats submitted to elective ovariohysterectomy on the quality of perioperative analgesia and the need for hypnotic and analgesic drugs. Materials, Methods & Results: Thirty-three adult female cats were selected, without defined breed and healthy based on physical examination, routine laboratory analyses (complete blood count, total protein, Heinz body investigation and serum quantification of alanine transaminase [ALT], aspartate transaminase [AST], gamma glutamyl transpeptidase [GGT], alkaline phosphatase [ALP], urea, frutosamine, and glucose) and negative tests for feline immunodeficiency virus (FIV) and feline leukemia virus (FeLV). After 3 days of adaptation, they were submitted to ovariohysterectomy by celiotomy and randomly allocated into 2 groups according to the preoperative drug used: GCAR [carprofen - 4 mg/kg, VO, 2 h before surgery; n = 11] and GGRA (grapiprant - 2 mg/kg IV, 2 h before surgery; n = 21]. The cats were pre-medicated with acepromazine 0.05 mg/ kg IV and later submitted to general anesthesia with propofol intravenously. Anesthesia was maintained with isoflurane in 100% oxygen. After anesthetic induction, a continuous infusion of remifentanil at a rate of 10 µg/kg/h was initiated. During the transanesthetic period, the parameters of heart rate; respiratory rate; systolic, mean, and diastolic arterial pressure using the oscillometric method; electrocardiogram; rectal temperature; partial pressure of CO2 at the end of expiration: and partial saturation of O2 in hemoglobin were continuously monitored. The evaluation of nociception was based on the changes in the aforementioned physiological parameters. The rate of remifentanil used did not change over time with the use of carprofen. However, animals that received grapiprant required a lower remifentanil dose at 20, 25, and 30 min during the procedure. The female cats that received carprofen showed an increase in mean heart rate at 30 min compared to that at 20 and 25 min. In the Grapiprant group, the heart rate at 35 min was higher only than that observed at 25 min. Discussion: The remifentanil rate did not differ between the groups, even between the times for GCAR. However, the remifentanil rate was lower from 20 min of the procedure for GGRA. This decrease may be related to a decrease in the need for anesthetics and analgesics by decreasing temperature, which causes decreases in metabolism and surgical stimulation. The increase in systolic, mean, diastolic, and heart rate arterial pressure parameters observed in both treatments after 15 min of anesthesia is related to the nociceptive stimulus resulting from traction and ligation of the ovarian pedicles and maneuvers for exteriorization of the uterus. These are considered the moments of greater surgical stimulus during ovariohysterectomy, evidenced by the greater release of cortisol and increase in physiological parameters. The results of this study show that the administration of carprofen or grapiprant was clinically similar when used preemptively for perioperative analgesia in cats submitted to elective ovariohysterectomy.

Distiquíases em gatos / Distichiasis in cats

Background: Distichiasis is a disease that is rare in cats, but very common in dogs. The term distichiasis may be controversial when used in the feline species, given that they do not possess true cilia, but rudimentary hair along the superior palpebra. The patients may be asymptomatic, though some show signs of ocular discomfort and ulcerative keratitis. The diagnosis is reached through an ophthalmological exam, and the treatment consists of the removal of the cilium with or without its hair follicle. With this work, we aim to report a series of cases of distichiasis in cats, as it is an uncommon anomaly, and has the potential to cause ocular discomfort in cats. Cases: Two mobile services of veterinary ophthalmology, one in the federal district of Brasília (DF) and the other in the municipality of Valinhos (SP), attended to 9 cats over a period of 5 years (2018 to 2022). The cats (n = 9) attended are of an undefined breed with ages varying from 10 months to 9 years, with an average of 3.9-year-old. The number of distichiasis presented by the animals was classified according to their quantity, being categorized as a mild grade when there was a single cilium, moderate grade when there were 2 to 4 cilia, and severe grade when there were more than 5 cilia. The highest incidence of distichiasis in this study was in males (78%) while females accounted for (22%) of the cases. The clinical changes reported by the owners consisted of signs of ocular discomfort (photophobia, blepharospasm, and periocular itching), ocular discharge and ocular redness. In the ophthalmological evaluations, blepharospasm (22%), serous to mucosal secretion (56%), chemosis (22%), mild (44%) to moderate (11%) conjunctival hyperemia, and ulcerative keratitis (22%) were observed. Distichiasis was more frequent affecting both eyes (56%), while in only (44%) of cases it affected the left eye only. The highest occurrence of cilia was identified in the upper palpebra (78%). Distichiasis was found more often in the temporal palpebral portion (78%), and in 2 patients the identification was more challenging since these cilia lack pigmentation. Single cilium affected (44%) of patients, while 5 cats had multiple distichiasis (56%). A total of 29% of the cats had a mild grade, whereas 14% had a moderated grade, and 57% had a severe grade. The treatments performed consisted of manual epilation (ME) and electroepilation (EE). ME was carried out in 56% of the cats, with relapses occurring in 80% of the patients, while 44% of the cats submitted to EE had a relapse in 20% of the cases. Discussion: Distichiasis is an inherited disorder very frequent in dogs, but considered uncommon in cats. Its causative factor is still unknown, as is its mode of inheritance. In distichiasis therapy, epilation, electroepilation, electrolysis, diode laser, cryotherapy and surgical palpebral resection techniques are referred to as procedures. Among the treatments used in this study, we observed a lower incidence of relapse with the electroepilation technique, which proved to be a viable and successful therapeutic modality. This series of cases shows that perhaps this disorder is much more frequent than what has been reported in the literature, being sometimes underdiagnosed and consequently underreported. Therefore, distichiasis in cats should be considered as a differential diagnosis in patients with clinical signs of ocular discomfort and ulcerative keratitis.

Análise da atividade antibacteriana do extrato aquoso de Curcuma longa L. e digluconato de clorexidina no tratamento de doenças periodontais em cães e gatos / Analysis of the antibacterial activity of the aqueous extract of Curcuma longa L. in the treatment of periodontal diseases in dogs and cats / Análisis de la actividad antibacteriana del extracto acuoso de Curcuma longa L. en el tratamiento de enfermedades periodontales en perros y gatos

A doença periodontal é a afecção mais comum em cães e gatos. Atualmente, a substância mais eficaz para realizar a limpeza oral em animais de companhia é a Clorexidina muito eficiente no controle das placas bacterianas, mas seu uso prolongado causa muitos efeitos colaterais. O uso de plantas medicinais vem ganhando espaço na veterinária. Curcuma longa L., por exemplo, apresenta grande potencial terapêutico. A cúrcuma despertou interesse no campo da periodontia, pois atinge tanto as bactérias, com sua ação antimicrobiana, como as células inflamatórias do hospedeiro por sua ação anti-inflamatória. Buscando uma alternativa com menos efeito colateral, o presente estudo teve como objetivo avaliar a ação antibacteriana de Curcuma longa L. e do digluconato de clorexidina sobre alguns micro-organismos causadores dessa doença. O extrato seco de Curcuma longa L. e o digluconato de clorexidina foram adquiridos comercialmente de uma farmácia de manipulação, onde, posteriormente, obteve-se os extratos aquosos nas concentrações 1%; 2,5%; 5%; 10% e 20% e solução de clorexidina 2%. Realizou-se o preparo do inóculo, na escala de 0,5 de MacFarland, das cepas de E. coli e S. aureus. Todas as concentrações foram testadas em triplicata. Utilizou-se digluconato de clorexidina 2% como controle positivo e solução de água destilada com polissorbato 20 como controle negativo. Staphylococcus aureus mostrou-se sensível ao extrato aquoso de Curcuma longa L. em contrapartida Escherichia coli apresentou resistência. Por este estudo ter como objetivo o tratamento de doenças periodontais, não descarta-se a eficácia do extrato aquoso de curcuma longa sobre a bactéria Gram positiva que está presente na fase inicial dessa doença em cães e gatos, já que demonstrou sensibilidade, tornando necessário novas pesquisas para corroborar este estudo.

Periodontal disease is the most common condition in dogs and cats. Currently, the most effective substance in the control of bacterial plaques to carry out oral cleaning in pets is Chlorhexidine, but its prolonged use causes many side effects. As an alternative, the use of medicinal plants has been gaining ground in veterinary medicine, Curcuma longa L., for example, has great therapeutic potential. Curcumin has aroused interest in the field of periodontics due to its antimicrobial and anti-inflammatory action. Seeking an alternative with fewer or no side effects, the present study aimed to evaluate the antibacterial action of Curcuma longa L. on some microorganisms that cause this disease. The dry extract of turmeric and the chlorhexidine digluconate were purchased commercially from a compounding pharmacy, where, subsequently, the aqueous extracts were obtained in concentrations of 1%; 2.5%; 5%; 10% and 20% and 2% chlorhexidine solution. The inoculum was prepared, on a MacFarland scale of 0.5, for the strains of E. coli and S. aureus. All concentrations were tested in triplicate. 2% chlorhexidine digluconate was used as a positive control and a solution of distilled water with polysorbate 20 as a negative control. Staphylococcus aureus was sensitive to the aqueous extract of Curcuma longa, while Escherichia coli showed resistance. Because this study aims to prevent periodontal diseases, the effectiveness of the aqueous extract of curcuma longa on the Gram positive bacteria that is present in the initial phase of this disease in dogs and cats it demonstrate sensitivity, and further research is necessary to corroborate this study.

La enfermedad periodontal es la condición más común en perros y gatos. Actualmente, la sustancia más eficazes en el control de las placas bacterianas para realizar la limpieza bucal en las mascotas es la Clorhexidina, pero su uso prolongado provoca muchos efectos secundarios. Como alternativa, en la medicina veterinaria ha ido ganando terreno el uso de plantas medicinales, por ejemplo, la Curcuma longa L. tiene un gran potencial terapéutico. La curcumina ha despertado interés en el campo de la periodoncia debido a su acción antimicrobiana y antiinflamatoria. Buscando una alternativa con menos o ningún efecto secundario, el presente estudio tuvo como objetivo evaluar la acción antibacteriana de Curcuma longa L. sobre algunos microorganismos que causan esta enfermedad. El extracto seco de Curcuma longa L. y el digluconato de clorhexidina fueron adquiridos comercialmente en una farmacia de compuestos, donde posteriormente se obtuvieron los extractos acuosos a concentraciones del 1%; 2,5%; 5%; al 10% y al 20% Solución de clorhexidina y al 2%. El inóculo se preparó, en una escala de MacFarland de 0,5, para las cepas de Escherichia coli y Staphylococcus aureus. Todas las concentraciones se ensayaron por triplicado. Se utilizó digluconato de clorhexidina al 2% como control positivo y como control negativo una solución de agua destilada con polisorbato 20. Staphylococcus aureus fue sensible al extracto acuoso de Curcuma longa, mientras que Escherichia coli mostró resistencia. Debido a que este estudio tiene como objetivo prevenir las enfermedades periodontales, no se puede descartar la efectividad del extracto acuoso de Curcuma longa sobre la bacteria Gram positiva que está presente en la fase inicial de esta enfermedad en perros y gatos, ya que demostró sensibilidad, lo que hace que se realicen más investigaciones necesario para corroborar este estúdio.

Sheep naturally infected with Anaplasma ovis - evaluation of cardiac and inflammatory biomarkers

Background: Anaplasmosis, also called gall sickness or tropical bovine ehrlichiosis, is an infectious disease caused by species belonging to the genus Anaplasma in domestic and wild animals in tropical and subtropical regions. Anaplasma ovis and A. phagocytophilum are important pathogens of sheep. A. ovis is considered the most common species affecting sheep. The infection is usually subclinical and progresses with high fever, anaemia, icterus, weight loss and abortions. This study aimed to investigate changes in cardiac damage markers, oxidative stress and antioxidant status, cytokines, and acute phase proteins in sheep naturally infected with A. ovis. Materials, Methods & Results: For this purpose, a total of 40 animals, including 20 healthy sheep and 20 sheep infected with anaplasmosis, were used. A. ovis was diagnosed based on clinical findings and peripheral blood smear. Blood smears were prepared from the ear vein. The smears were stained with Giemsa and examined for the presence of Anaplasma spp. Infection was also confirmed by polymerase chain reaction (PCR) analysis. The genomic DNA was isolated from blood, and the MSP-4 gene region was amplified as A. ovis specific target gene. Twenty clinically healthy sheep of the same age group, reared under the same conditions and testing negative in the molecular assessment were used as controls. Blood samples were collected from the cephalic vein and and centrifuged to obtain serum. The serum stored at -20°C until the analysis stage. Serum samples were used for the analysis of cardiac damage markers [troponin I (cTnI), creatine kinase MB (CK-MB), lactate dehydrogenase (LDH) and aspartate transaminase (AST)], oxidative stress parameters [malondialdehyde (MDA), total antioxidant status (TAS), superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx)], cytokines [interleukins IL-6, IL-1ß and IL-10, tumour necrosis factor α (TNF-α), and interferon-γ (IFN-γ)] and acute phase proteins [C-reactive protein (CRP), serum amyloid A (SAA) and haptoglobin (Hp)]. cTnI and CK-MB levels were measured using a chemiluminescent immunoassay. MDA, TAS, SOD, CAT, GPx, TNF-α, IL-1ß, IL-6, IL-10, IFN-γ, SAA and Hp levels were measured by an ELISA reader. LDH, AST and CRP levels were measured in an autoanalyzer. cTnI and LDH levels were significantly increased in the infected animals compared to the healthy ones (P < 0.05). The concentration of AST was decreased in infected animals. MDA, TAS, SOD, CAT and GPx levels were significantly increased in the infected animals compared to the healthy ones (P < 0.05). The levels of the inflammatory parameters such as TNF-α, IL-1ß, IL-10 and IFN-γ were significantly increased in the infected animals compared to the healthy ones (P < 0.05). Hp level were significantly increased in the infected group compared with the control group (P < 0.05). However, there was no significant change in CK-MB, SAA and CRP concentrations in the infected animals (P > 0.05). Discussion: Ovine anaplasmosis is an obligate intracellular arthropod disease that causes widespread changes in haematobiochemical, immune response and oxidative stress parameters. Cardiac damage is often overlooked in field conditions due to the lack of adequate knowledge about the pathophysiology of the disease. Our results showed that A. ovis infection leads to significant changes in cardiac biomarkers and that the parasite can cause cardiac dysfunction. This is the first report on cardiac damage markers in Anaplasma-infected sheep. Additionally, the levels of proinflammatory and oxidative stress markers that may cause functional disorders were also found to be increased. Thus, measuring markers of cardiac function, oxidative stress and inflammation can be a useful tool in the early diagnosis of ovine anaplasmosis.

Evaluation of maternal antibodies against rabies in puppies and kittens in Mazandaran Province, Iran / [Avaliação de anticorpos maternos contra a raiva em filhotes de cachorro e gatos na província de Mazandaran, Irã]

Rabies is a critical zoonotic high-risk disease, which has emerged as an important public-health problem. There are limited investigations that explore maternally derived antibody (MDA) in puppies and kittens from around the world. Furthermore, there is no such research in any province of Iran. This study measured the serum level of MDA in 10 puppies and their vaccinated bitches (n=20), 10 puppies and their unvaccinated bitches (n=20), 10 kittens with vaccinated queens and 10 kittens with unvaccinated queens. Antibodies against rabies were measured using quantitative, enzyme-linked immunosorbent assay (ELISA). Our results showed that 90% (9 out of 10) of puppies from vaccinated bitches were positive for anti-rabies antibodies, while test results for all puppies from non-vaccinated bitches were negative (P=0.001). Moreover, puppies' titers were significantly higher in the vaccinated group than the non-vaccinated group (P=0.003). There was a similar condition between vaccinated and non-vaccinated bitches (P=0.008). Although kittens' titers were significantly higher in the vaccinated group than the non-vaccinated group (P=0.03), only 20 percent of the kittens with vaccinated queens showed positive results, while all kittens from non-vaccinated queens were negative for anti-rabies antibodies (P=0.137).

A raiva é uma doença zoonótica crítica de alto risco, que surgiu como um importante problema de saúde pública. Há investigações limitadas que exploram anticorpos derivados da maternidade (MDA) em filhotes e gatos de todo o mundo. Além disso, não existe tal pesquisa em nenhuma província do Irã. Este estudo mediu o nível sérico do MDA em 10 filhotes e suas cadelas vacinadas (n=20), 10 filhotes e suas cadelas não vacinadas (n=20), 10 filhotes com rainhas vacinadas e 10 filhotes com rainhas não vacinadas. Os anticorpos contra a raiva foram medidos usando o ensaio quantitativo de imunoabsorção enzimática (ELISA). Nossos resultados mostraram que 90% (9 em cada 10) dos filhotes de cadelas vacinadas foram positivos para anticorpos anti-rábicos, enquanto os resultados dos testes para todos os filhotes de cadelas não vacinadas foram negativos (P=0,001). Além disso, os títulos dos filhotes foram significativamente mais altos no grupo vacinado do que no grupo não vacinado (P=0,003). Havia uma condição similar entre cadelas vacinadas e não vacinadas (P=0,008). Embora os títulos dos filhotes fossem significativamente mais altos no grupo vacinado do que no grupo não vacinado (P=0,03), apenas 20% dos filhotes com rainhas vacinadas apresentaram resultados positivos, enquanto todos os filhotes de rainhas não vacinadas foram negativos para anticorpos anti-rábicos (P=0,137).

Occurrence of intestinal parasites in fecal samples of dogs and cats from Mineiros, Goiás / Ocorrência de parasitas intestinais em amostras fecais de cães e gatos de Mineiros, Goiás

Gastrointestinal parasites are frequently found in domestic animals, with important role in animal and public health. Among gastrointestinal parasites of dogs and cats Toxocara spp. and Ancylostoma spp. are reported as the most common parasites found in dogs and cats in the world caunsing digestive damage, including death, and with great importance in public health causing visceral larva migrans and cutaneous larva migrans respectively. This study aimed verify the occurrence of gastroenteric parasites in dogs and cats from Mineiros, Goiás, in association with epidemiological aspects. In total, 103 fecal samples (93 from dogs and 10 from cats) from April 2017 to July 2018 were collected by spontaneous defecation and processed for search of eggs and oocysts by the Willis (adapted) technique. Toxocara spp. was the most frequent parasite identified in dogs, with 34.41% frequency (32/93 samples), followed by Ancylostoma spp. (11.83%, 11/93 samples) and Cystoisospora spp. (1.07%, 1/93 samples). Fecal samples from cats, showed a similar result, being Toxocara spp. the most frequent parasite (40%, 4/10 samples), followed by Ancylostoma spp. (20%, 2/10 samples) and Cystoisospora spp. (20%, 2/10 samples). Young animals were 10% more positive for parasites comparing to elderly and adult animals (odds ratio=1.1), as well as animals with access outdoors 20% more parasitized (odds ratio=1.2). The study showed the most common gastrintesinal parasites of dogs and acts from Mineiros, Goiás.(AU)

Emergências reprodutivas de cadelas e gatas em um Hospital Veterinário Universitário / Reproductives emergencies in female dogs and female cats treated in a Teaching Veterinary Hospital

Emergências reprodutivas, como as piometras e distocias, são frequentes na rotina clínica de cadelas e gatas. A distocia ocorre quando há falha no momento do parto ou na expulsão do feto e sua causa mais comum, nas duas espécies, é a inércia uterina primária. A piometra é uma infecção que ocorre no útero, causada por alterações hormonais na fase do diestro dos animais. As duas enfermidades (distocia e piometra) podem ter o envolvimento de anticoncepcionais, tanto nas cadelas como nas gatas. Na maioria das vezes, as distocias, em cadelas e gatas, é abordada por meio da realização de cesarianas, enquanto para a piometra, a terapêutica mais efetiva é a realização de ovariohisterectomia. Desta forma, tendo em vista a deficiência na quantificação de emergências reprodutivas obstétricas em cadelas e gatas diagnosticadas em serviços veterinários do Brasil, este trabalho teve como objetivo relatar os achados obtidos através do monitoramento, durante 90 dias, de 43 cadelas e 20 gatas com emergências reprodutivas. Dentre as cadelas, 29 (67,44%; 29/43) apresentaram piometra, 13 (30,23%; 13/43) distocia e 1 prolápso vaginal. Dentre as gatas, 13 (65%; 13/20) apresentaram distocia e sete (35%; 7/20) piometra. Algumas das emergências reprodutivas foram relacionadas ao uso de anticoncepcional. Assim, os clínicos veterinários devem desencorajar esta prática e incentivar a castração das fêmeas.

Reproductive emergencies, such as pyometras and dystocias, are frequent in the clinical routine of female dogs and cats. Dystocia occurs when there is a failure during delivery or expulsion of the fetus, and its most common cause, in both species, is primary uterine inertia. Pyometra is an infection that occurs in the uterus caused by hormonal changes in the diestrous phase of animals. In both diseases (dystocia and pyometra), contraceptives can be involved in both female dogs and cats. Most of the time, dystocias, in female dogs and cats, is addressed through cesarean sections, while in pyometra, the most effective therapy is to perform ovariohysterectomy. Thus, given the deficiency in the quantification of obstetric reproductive emergencies in female dogs and cats diagnosed in veterinary services in Brazil, this study aimed to report the findings obtained by monitoring 43 female dogs and 20 female cats with reproductive emergencies for 90 days. Among bitches, 29 (67.44%; 29/43) presented pyometra, 13 (30.23%; 13/43) showed dystocia, and 1 had vaginal prolapse. Among the cats, 13 presented dystocia (65%; 13/20), and 7 (35%; 7/20) showed pyometra. Some reproductive emergencies were related to contraceptive use. Thus, veterinary clinicians must discourage this practice and encourage the castration of females

Physical therapy modalities in the rehabilitation of cats (Felis catus) with neurological and orthopedic conditions / Modalidades terapêuticas na reabilitação de gatos (Felis catus) com doenças neurológicas e ortopédicas

This retrospective study described the therapeutic modalities used for the rehabilitation of cats with neurological and orthopedic diseases and provided data regarding the number of sessions, frequency, and treatment duration; the study also evaluated the modality acceptance by this species. Twenty cats were selected, 11 with neurological diseases and nine with orthopedic conditions. Acute spinal cord trauma and femoral fracture were the most frequently observed neurological (72.7%) and orthopedic (44.4%) conditions, respectively. Manual therapies comprised of passive stretching (PS), passive range of motion (PROM), and bicycle movement (BM) exercises were included in all the protocols.Therapeutic modality acceptance was positive for physical agents, thermotherapy, and hydrotherapy (100%);in manual therapies, it was positive in 40% and partially positive in 60% of cats; in kinesiotherapy, it was positive for all the assisted active exercises and negative for the active exercises. The number of physical therapy sessions significantly influenced the positive acceptance of PS (P < 0.05). The PS, PROM, and BM exercises were the most commonly used modalities; the number of physiotherapy sessions and duration of treatment were higher in cats with neurological diseases, and acceptance was positive in most therapeutic modalities.

RESUMO: O objetivo deste estudo retrospectivo foi descrever as modalidades terapêuticas utilizadas na reabilitação de gatos com doenças neurológicas e ortopédicas em um centro de reabilitação, fornecer dados referentes ao número de sessões, a frequência, a duração do tratamento e avaliar a aceitação das modalidades pela espécie. Foram selecionados 20 gatos, sendo, 11 com doenças neurológicas e nove com afecções ortopédicas. O trauma agudo de medula espinhal e a fratura de fêmur foram as doenças neurológicas (72,7%) e ortopédicas (44,4%) mais observadas, respectivamente. As terapias manuais compostas pelos exercícios de alongamento passivo (AP), movimentação passiva articular (MPA) e movimento em bicicleta (MB) foram incluídas em 100% dos protocolos. A aceitação das modalidades terapêuticas foi positiva para os agentes físicos, termoterapia e hidroterapia (100%); nas terapias manuais, foi positiva em 40% e parcialmente positiva em 60% dos gatos e, na cinesioterapia, foi positiva para os exercícios ativos assistidos em 100% e negativa para os exercícios ativos. O número de sessões de fisioterapia influenciou significativamente na aceitação positiva do alongamento passivo (P < 0,05). O AP, a MPA, o MB foram as modalidades mais utilizadas; o número de sessões de fisioterapia e a duração do tratamento foram maiores nos gatos com doenças neurológicas e a aceitação foi positiva na maioria das modalidades terapêuticas.

Linfoma mediastinal em gato com vírus da leucemia felina / Mediastinal lymphoma in a cat with feline leukemia virus

Background: Mediastinal lymphoma occurs at a high incidence in cats positive for feline leukemia virus (FeLV). It is a malignant lymphocytic neoplasm that may trigger clinical signs such as dyspnea, apathy, regurgitation, and weight loss. The objective of this work is to report a case of mediastinal lymphoma associated with FeLV in a cat, and describe the clinical, pathological, diagnostic, and therapeutic aspects that can help the diagnosis and treatment of this disease. Case: A 3-year-old male neutered cat weighing 4.6 kg, positive for FeLV, and with a history of dyspnea and hyporexia was referred to a private veterinary clinic in the city of Caxias do Sul, RS, Brazil. The only alteration found at the clinical examination was a muffled sound during lung auscultation. Radiographs of the thorax revealed the presence of pleural effusion; after drainage of the fluid, a mass located in the mediastinal area became radiographically observable. An analysis of the effusion fluid showed high cellularity characterized by a markedly pleomorphic population of individual round cells consistent with lymphocytes. Small lymphocytes with a high nucleus:cytoplasm ratio, round nucleus, condensed chromatin, and inconspicuous nucleoli were observed, along with medium and large lymphocytes. The medium and large lymphocytes were characterized by a variably increased nucleus:cytoplasm ratio and a scant to moderate cytoplasm exhibiting moderate to intense basophilia and, occasionally, vacuoles. The nuclei were round, idented, or irregular; most of them were located eccentrically and contained coarse to finely granular chromatin. Nucleoli varied from single to multiple, round to angular, and central to peripheral and prominent. Macronucleoli and marked anisonucleosis were also observed, as well as binucleated cells and rare multinucleated cells. The conclusion was that it was a case of neoplastic effusion caused by a lymphoma. After an appointment with an oncologist, a chemotherapy protocol was established. The treatment of choice was CHOP, a combination of cyclophosphamide (20 mg/kg orally), doxorubicin (1 mg/kg intravenously), vincristine (0.5 mg/m2 intravenously), and prednisolone with a regressive dose starting at 2 mg/kg. The patient underwent 4 rounds of chemotherapy, and received a maintenance treatment thereafter. The patient's condition remained stable for 390 days without relevant clinical or hematological alterations. Discussion: The diagnosis of mediastinal lymphoma was established by associating clinical finings, laboratory exams, and radiographic findings. Exams of utmost importance to reach this diagnosis were the thoracic radiography, which revealed the presence of a mass in the thorax, and the cytopathological analysis of the effusion fluid, as round cell neoplasms are easily dissociated. Young cats are the group most affected by FeLV, and mediastinal lymphoma is considered the most prevalent type of lymphoma in this species. The most common clinical sign is dyspnea; however, other signs such as apathy, weight loss, regurgitation (due to pressure on the esophagus), and Horner's syndrome (owing to pressure on the thoracic sympathetic innervation) may also occur. This disease is treated with chemotherapy, with CHOP frequently used as the chemotherapeutic protocol. The good therapeutic response for a longer time than the average estimated by studies on the prognostic of this disease indicates that a correct diagnosis along with an assertive approach and the cooperation of the tutor are essential in cases of mediastinal lymphoma.

Acinetobacter calcoaceticus-Acinetobacter baumannii complex in animals: identification and antimicrobial resistance profile / Complexo Acinetobacter calcoaceticus-Acinetobacter baumannii em animais: identificação e perfil de resistência antimicrobiana

Acinetobacter spp. is emerging as an important human and veterinary pathogen, mostly due to intrinsic and acquired resistance to antimicrobials. Despite its public health relevance, little is known about the prevalence, role of different Acinetobacter species and antimicrobial resistance profile of animal-origin isolates. Traditional phenotypic tests may fail to discriminate Acinetobacter species, therefore molecular analyses are often required as a complementary approach. The objectives of this study were to evaluate the occurrence of strains of the Acinetobacter calcoaceticus-Acinetobacter baumannii (Acb) complex isolated from animal infections including urinary tract infections, otitis, piodermitis and pododermatitis, and its resistance profile against different antimicrobial classes, including carbapenems. All Gram-negative coccobacilli isolates were characterized by MALDI-TOF and multiplex PCR, and the disk diffusion test was used to investigate multi-drug resistance (MDR) and carbapenem resistance genes by PCR as preconized by the standard guidelines. MALDI-TOF technique identified 21 strains belonging to the Acb complex (10 A. pittii, 8 A. baumannii, 3 A. nosocomialis, 1 A. ursingii, and 1 A. venetianus). Multiplex PCR confirmed the results of MALDI-TOF for 20 strains. Eight strains (34.78%) were classified as MDR, being 50% (4/8) A. baumannii, 37.5% (3/8) A. pittii, and 12.5% (1/8) A. nosocomialis. None of the isolates presented phenotypic carbapenemase production. Considering the carbapenem resistance genes, 26.09% (6/23) of the isolates presented one or more carbapenemase genes. From these, 50% (3/6) presented only bla VIM, 33.33% (2/6) presented only blaIMP, and 16.67% (1/6) presented blaIMP e blaVIM, simultaneously. These genes were detected among A. pittii isolates mostly (66.67%, 4/6). This study provides further insights into the occurrence and resistance profile of Acinetobacter of animal origin.

Acinetobacter spp. está emergindo como um importante patógeno humano e veterinário, principalmente devido à resistência intrínseca e adquirida aos antimicrobianos. Apesar de sua relevância para a saúde pública, pouco se sabe sobre a prevalência, o papel das diferentes espécies de Acinetobacter e o perfil de resistência antimicrobiana de isolados de origem animal. Testes fenotípicos tradicionais podem falhar em discriminar espécies de Acinetobacter, portanto, análises moleculares são frequentemente necessárias como uma abordagem complementar. Os objetivos deste estudo foram avaliar a ocorrência de cepas do complexo Acinetobacter calcoaceticus-Acinetobacter baumannii (Acb) isolados de infecções de animais, incluindo infecções do trato urinário, otite, piodermite e pododermatite, e seu perfil de resistência a diferentes classes de antimicrobianos, incluindo os carbapenêmicos. Todas as cepas cocobacilos Gram-negativas foram caracterizados por MALDI-TOF e PCR multiplex, e o teste de difusão em disco foi usado para investigar genes de resistência a múltiplas drogas (MDR) e resistência a carbapenêmicos por PCR conforme preconizado pelas diretrizes padrão. A técnica MALDI-TOF identificou 21 cepas pertencentes ao complexo Acb (10 A. pittii, 8 A. baumannii, 3 A. nosocomialis, 1 A. ursingii e 1 A. venetianus). Multiplex PCR confirmou os resultados de MALDI-TOF para 20 cepas. Oito cepas (34.78%) foram classificadas como MDR, sendo 50% (4/8) A. baumannii, 37.5% (3/8) A. pittii e 12.5% (1/8) A. nosocomialis. Nenhum dos isolados apresentou produção fenotípica de carbapenemases. Considerando os genes de resistência a carbapenemas, 26.09% (6/23) dos isolados apresentaram um ou mais genes de carbapenemases. Destes, 50% (3/6) apresentaram apenas bla VIM, 33.33% (2/6) apresentaram apenas bla IMP e 16.67% (1/6) apresentaram bla IMP e bla VIM, simultaneamente. Esses genes foram detectados principalmente entre os isolados de A. pittii (66.67%, 4/6). Este estudo fornece mais informações sobre a ocorrência e perfil de resistência de Acinetobacter de origem animal.

Inquérito epidemiológico sobre Lagoquilascaríase em Felinos da Serra Gaúcha / Epidemiological survey on Lagoquilascariasis in felines of Serra Gaucha

O nematoide Lagochilascaris sp. pertencente à família Ascarididae é um parasito cujo o hospedeiro definitivo pode ser o gato. Considerada uma zoonose rara na medicina veterinária, a lagoquilascaríase é responsável por causar lesões luminais e possui um tropismo particular pela região cervical e cabeça. A infecção ocorre através da ingestão da carne de animais silvestres mal cozida pelo homem e através da caça pelos felinos. Este trabalho tem como objetivo realizar um levantamento dos casos de lagoquilascaríase ocorridos em gatos domésticos nas cidades de Bento Gonçalves, Farroupilha e Caxias do Sul, localizadas na região da Serra Gaúcha. Foi realizada uma pesquisa através de questionário encaminhado por e-mail, durante os meses de abril a julho de 2020, a 44 médicos veterinários dos municípios de Bento Gonçalves, Farroupilha e Caxias do Sul, sendo 13 (29,54%) veterinários de Bento Gonçalves, 10 (22,73%) de Farroupilha e 21 (47,73%) de Caxias do Sul. Destes profissionais, 17 (38,63%) já atenderam casos de animais parasitados por este nematódeo; 9 (20,45%) em Bento Gonçalves; 3 (6,81%) em Farroupilha e 5 (11,36%) em Caxias do Sul. No total foram atendidos 36 casos de lagoquilascaríase no período de 2016 a 2020, sendo que a maior ocorrência foi na cidade de Bento Gonçalves, com 25 casos, seguida por Caxias do Sul com 6 casos e Farroupilha com apenas 5 casos relatados. Apesar da literatura considerar a lagoquilascaríase uma doença rara, este levantamento mostra que há vários casos acontecendo na espécie felina na Serra Gaúcha.

The nematode Lagochilascaris sp. belonging to the family Ascarididae is a parasite whose definitive host may be the cat. Considered a rare zoonosis in veterinary medicine, lagochilascariasis is responsible for causing luminal lesions and has a particular tropism for the cervical region and head. Infection occurs through the ingestion of undercooked meat from wild animals by humans and through hunting by felines. This work aims to carry out a survey of cases of lagochilascariasis that occurred in domestic cats in the cities of Bento Gonçalves, Farroupilha and Caxias do Sul, located in the Serra Gaúcha region. A survey was carried out through a questionnaire sent by email, during the months of April to July 2020, to 44 veterinarians from the municipalities of Bento Gonçalves, Farroupilha and Caxias do Sul, of which 13 (29.54%) were veterinarians from Bento. Gonçalves, 10 (22.73%) from Farroupilha and 21 (47.73%) from Caxias do Sul. Of these professionals, 17 (38.63%) have already treated cases of animals parasitized by this nematode; 9 (20.45%) in Bento Gonçalves; 3 (6.81%) in Farroupilha and 5 (11.36%) in Caxias do Sul. In total, 36 cases of lagochilascariasis were treated in the period from 2016 to 2020, with the highest occurrence being in the city of Bento Gonçalves, with 25 cases, followed by Caxias do Sul with 6 cases and Farroupilha with only 5 reported cases. Although the literature considers lagochilascariasis a rare disease, this survey shows that there are several cases happening in feline species in Serra Gaúcha.

Effect of three storage methods on physical and chemical properties of colostrum from Bos indicus cows / Efeito de três métodos de conservação nas propriedades físicas e químicas do colostro de vacas Bos indicus

Maternal colostrum provides the neonate with immunoglobulins, essential for passive immunity. However, storage and handling of colostrum can alter its physical and nutritional characteristics. The aim of this study was to evaluate the effects of three conservation methods on colostrum density, pH, total antioxidant capacity (TAC), protein (PP) and lipid peroxidation (LP). Colostrum samples were collected from 15 Bos indicus cows, and divided into three aliquots for storage using three methods: refrigeration at 4°C, freezing at -20°C, and lyophilization. For each method, four evaluation times were performed: day (d) 5, 10, 15, and 20 for refrigeration and d 15, 30, 45, and 60 for freezing and lyophilization. pH and density analyses were performed at each evaluation time for each method. On d 0 and 15 of storage, TAC, LP, and PP analyses were performed. A generalized linear model, Tukey's test for means comparisons, and a Pearson correlation analysis were conducted. A decrease in refrigerated colostrum pH was observed on d 15. Density of the lyophilized colostrum decreased, as compared with that of frozen colostrum. Lyophilization exhibited the lower PP values of samples, whereas refrigeration presented the highest values of LP and PP. No differences in colostrum TAC were observed between storage methods. A positive correlation between PP and colostrum density and a negative correlation between colostrum density and TAC were found. It was concluded that both freezing and lyophilization are suitable storage methods for bovine colostrum, as they limit proteins and lipids oxidation, and maintain the TAC of fresh colostrum.

O colostro materno fornece ao recém-nascido imunoglobulinas que são essenciais para a imunidade passiva. No entanto, o armazenamento e o manuseio do colostro podem alterar suas características físicas e nutricionais. O objetivo deste estudo foi avaliar os efeitos de três métodos de conservação na densidade, pH, capacidade antioxidante total (CAT), peroxidação protéica (PP) e lipídica (LP) do colostro. Amostras de colostro foram coletadas de 15 vacas Bos indicus, e divididas em três alíquotas para armazenamento usando três métodos: refrigeração a 4 °C, congelamento a -20 °C e liofilização. Em cada método, foram realizados quatro tempos de avaliação: dia (d) 5, 10, 15 e 20 para refrigeração e dia 15, 30, 45 e 60 para congelamento e liofilização. Além disso, as análises de pH e densidade foram realizadas em cada momento de avaliação para cada método. No dia 0 e 15 de conservação foram realizadas análises da CAT, PL e PP. Foi realizado um modelo linear generalizado, teste de Tukey para comparação de médias e análise de correlação de Pearson. Uma diminuição no pH do colostro refrigerado foi encontrada no dia 15. A densidade do colostro liofilizado diminuiu em comparação com o colostro congelado. A liofilização apresentou menor PP das amostras, enquanto a refrigeração apresentou os maiores valores de PL e PP. Não foram observadas diferenças no TAC do colostro entre os métodos de armazenamento. Foi encontrada uma correlação positiva entre PP e densidade do colostro e uma correlação negativa entre densidade do colostro e CAT. Assim, concluiu-se que tanto o congelamento quanto a liofilização são métodos adequados de armazenamento do colostro bovino, pois limitam a oxidação de proteínas e lipídios e mantêm o TAC do colostro fresco.

Heterologous in vitro fertilization and embryo production for assessment of jaguar (Panthera onca Linnaeus, 1758) frozen-thawed semen in different extenders

Heterologous in vitro fertilization (IVF) is an important tool for assessing fertility of endangered mammals such as the jaguar, considering difficult access to females for artificial insemination and to obtain homologous oocytes. We aimed to evaluate the fertility of jaguar sperm cryopreserved with different extenders, using domestic cat oocytes to assess the development of hybrid embryos. Semen from four captive jaguars was obtained by electroejaculation. Samples were cryopreserved in powdered coconut water (ACP-117c) or Tris extender containing 20% egg yolk and 6% glycerol. Thawed spermatozoa were resuspended (2.0 × 106 spermatozoa/mL) in IVF medium and co-incubated with cat oocytes matured in vitro for 18 h. Presumptive zygotes were cultured for 7 days. After 48 h, cleavage rate was evaluated, and non-cleaved structures were stained for IVF evaluation. On days 5 and 7, the rate of morula and blastocyst formation was assessed. Data were analyzed using the Fisher exact test (p < 0.05). No difference was observed between ACP-117c and Tris extenders, respectively, for oocytes with 2nd polar body (2/51, 3.9 ± 2.9% vs. 2/56, 3.6 ± 3.1%), pronuclear structures (5/51, 9.8 ± 4.7% vs. 8/56, 14.3 ± 8.0%), and total IVF rates (7/36, 19.4 ± 5.0% vs. 10/37, 27.0 ± 13.8%). All the samples fertilized the oocytes, with 22.9 ± 3.2% (16/70) and 16.7 ± 3.6% (12/72) cleavage of mature oocytes for ACP-117c and Tris extenders, respectively. Morula rates of 4.3 ± 2.3% (3/70) and 5.6 ± 2.2% (4/72) were observed for ACP-117c and Tris, respectively. Only the Tris extender demonstrated blastocyst production (2/12, 16.7 ± 1.5% blastocyst/cleavage). We demonstrated that jaguar ejaculates cryopreserved using ACP-117c and Tris were suitable for IVF techniques, with blastocyst production by ejaculates cryopreserved in Tris. This is a first report of embryos produced in vitro using jaguar sperm and domestic cat oocytes through IVF.(AU)

Coloboma eyelid in cats - treatment with carbon dioxide cryosurgery

Background: Eyelid colobomas are congenital and developmental disorders. Generally, they affect the temporal portion of the upper eyelids of cats, bilaterally. This ocular defect is accompanied by trichiasis associated with pain and ulcerative keratitis. Any breed can be affected and it has been reported in Domestic Shorthair, Persian, Burmese, Mongrel cats and captive felids. The objective of this case report is to describe the technique of dioxide carbon cryosurgery for the treatment of eyelid coloboma in felines. Cases: Seven mongrel cats (14 eyes) with bilateral eyelid coloboma were included in this study, 5 females and 2 males, with a median age of 5 months (range 6-8 months). The patients presented with blepharospasm, bilateral mucopurulent ocular discharge and eyelid coloboma extension of 30-50% in the upper eyelid, resulting in severe trichiasis of both eyes. In 5 cats, 1 or both eyes were diagnosed with keratitis and superficial corneal ulcers. Surgical treatment with general anaesthesia was applied. The pre anaesthesia protocol included acepromazine 0.05 mg/kg with methadone 0.2 mg/kg, followed by intravenous propofol and maintenance with isoflurane and oxygen. An ophthalmological cryocautery unit was utilised with carbon dioxide as the cryogenic agent and a retinal cryoprobe of 3.2 mm diameter tip, reaching -50ºC for the procedure. The method used was a double cycle of freezing and thawing for 60 s in the margins of eyelid agenesis. Epilation of hairs was made after freezing with eyelash tweezers. Immediately after the surgical procedure, an Elizabethan collar was placed to safeguard the area and anti-inflammatory therapy with meloxicam 0.1 mg/kg once daily for 3 days was prescribed. Antibiotic ointment every 6 h (chloramphenicol and associations) was also prescribed for topical application. Two weeks post-operatively, hyperaemia, oedema and skin wounds at the margins were observed. After 30 days these clinical signs were minimal. No signs of pain were observed post-operatively. The follow-up was 90 days and the trichiasis was resolved in all cats. Discussion: Usually, young cats are affected with eyelid colobomas. The age of the patients in this study was between 6-8 months. Eyelid colobomas are repaired with a variety of blepharoplastic procedures and the choice depends on the size and position of the defect. Generally, larger defects require more extensive reconstructive procedures. All techniques can have post-operative complications. Suture dehiscence, skin flap necrosis and facial deformation can occur with traditional surgical techniques. Furthermore, posterior hair growth in the margins can lead to new trichiasis. Cryosurgery was chosen and performed as the temperature of -20°C is sufficient to destroy hair follicles, without surgical incisions, avoiding scar formation. Hence, sutures are not necessary in cryosurgery procedures. Carbon dioxide is a good cryogenic agent for the purpose of this procedure. In the cases described, no recurrence of hair growth was observed in the follow-up period of 90 days. Nevertheless, a good aesthetic appearance was maintained. Therefore, the use of carbon dioxide cryosurgery is an effective and safe alternative for treatment of eyelid coloboma in cats. To our knowledge, no paper has described the use of carbon dioxide cryosurgery for the correction of palpebral agenesis in felines and other species as a single treatment. This technique is easy to perform, has good aesthetic and functional results and can be considered a treatment option for this congenital condition.