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1.
Arch Microbiol ; 203(3): 1149-1157, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-33211173

RESUMO

Mycoplasma mycoides subsp. capri (Mmc) typically causes pneumonia, mastitis, arthritis, keratitis and septicaemia in goats. Mortality associated with Mmc in goat flocks is lower compared to Mycoplasma capricolum subsp. capripneumoniae-associated respiratory infections. Case fatality rates associated with Mmc ranged from 9.8 to 26.8% among several states in India. Molecular epidemiology approaches aimed at genotyping help to identify the diversity of isolates involved in a disease. Ten clinical pathogenic Mmc isolates were analysed by multilocus sequence typing (MLST) for studying genotypic relationships with 50 isolates available from public databases. The MLST analysis indicates high genetic diversity among Mmc isolates. From a total number of 60 isolates, 43 six sequence types (STs) were recognized comprising of six STs from India and 37 STs from other geographical regions. MLST profiles of isolates revealed none of the STs observed in Indian isolates were shared with global isolates. Some of the STs representing Indian isolates (four STs) were clustered into a novel clonal complex 1 (CC1). Maintenance of genetically related STs forming CCs among the goat population in India for longer periods indicates disease causing potentiality of these isolates. Based on various recombination analysis, weak clonal relationship among Mmc isolates were identified. The present study has enlightened further steps in disease investigations and to design future control measures by employing prevalent genotypes as vaccine candidates against Mmc infections.


Assuntos
Doenças das Cabras/microbiologia , Tipagem de Sequências Multilocus , Infecções por Mycoplasma/veterinária , Mycoplasma/classificação , Mycoplasma/genética , Animais , Feminino , Variação Genética , Genótipo , Doenças das Cabras/epidemiologia , Doenças das Cabras/mortalidade , Cabras , Índia/epidemiologia , Epidemiologia Molecular , Infecções por Mycoplasma/epidemiologia , Infecções por Mycoplasma/microbiologia , Infecções por Mycoplasma/mortalidade , Mycoplasma mycoides/genética , Mycoplasma mycoides/isolamento & purificação
2.
Animal ; 13(12): 2896-2902, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31317862

RESUMO

Pre-weaning animals exit a flock through death induced by various reasons, causing significant economic losses to the goat producers. In this study, we investigated the survival from birth to weaning of Sirohi goat kids within framework of the survival analysis. Kid records were accessed from 1997 to 2017, with the information on 4417 pre-weaning animals of farmed Sirohi goat native to the Rajasthan State of India. A multivariable Cox regression was fitted to the data after checking the assumptions of regression. The explanatory variables were sex, type of birth, season of birth, birthweight, doe weight at kidding and year of birth. Model selection eliminated doe weight from the model, and sex, type of birth, season of birth, birthweight and year of birth were retained in the model. With model calibration also, these five covariates were retained in the model. The mortality on the first day after birth was 0.3%, constituting 3.5% of all pre-weaning mortality. The mortality until the end of weaning period was 7.8%. Regression analysis revealed that the higher birthweight at kidding was associated with reduced hazard of death among the kids. Male kids had higher hazards of death compared with female kids. The single-born kids had lower risks of death compared with twin-born kids after accounting for heterogeneity. The winter season had a very high adverse effect on the survival of the kids. With each passing year, risks of death decreased. The results of this study indicate that better survival of kids can be achieved by controlling both environmental and animal-related factors.


Assuntos
Criação de Animais Domésticos/métodos , Doenças das Cabras/mortalidade , Desmame , Animais , Animais Recém-Nascidos , Feminino , Cabras , Índia/epidemiologia , Masculino , Análise de Regressão , Fatores de Risco , Análise de Sobrevida
3.
Transbound Emerg Dis ; 66(3): 1349-1359, 2019 May.
Artigo em Inglês | MEDLINE | ID: mdl-30839170

RESUMO

The study evaluated the effectiveness of 'Mass Vaccination Campaign (MVC)' implemented against the contagious transboundary OIE notified Peste des petits ruminants (PPR) in sheep and goats on the lines of 'pulse polio campaign' for humans in Chhattisgarh state, India. The effectiveness was evaluated on the axes of adequacy, financial viability under with and without MVC through differencing under various scenarios and options and programme impact from a farmer's perspective. The adequacy evaluation revealed that the reported outbreaks, diagnosed and death cases declined under PPR-MVC inconsonance with increased vaccination coverage. Furthermore, the seroconversion increased during post PPR-MVC implies elevated immunity levels in the sheep and goat population. The estimated mean mortality loss was USD 45.2 and USD 16.5 per animal in goats and sheep, respectively, whereas the treatment and opportunity cost of labour was USD 1.9 and USD 2.5 per animal respectively. Under the low PPR incidence scenario, benefit: cost ratio, net present value and internal rate of return were 4.9:1, 48.9 million USD and 146.6%, whereas it was 12.4:1,142.7 million USD and 430.4% and 13.5:1,156.7 million USD and 430.4% under medium and high incidence scenarios. Furthermore, the option of vaccinating 100% risk population during the first year followed by 30% during subsequent years to cover naïve population will maximize benefits than 100% coverage every year; nevertheless, benefits outweighs cost manifolds in both of these options. The farmers had a positive opinion on the overall services provided under PPR-MVC and the results provide the empirical evidence on effectiveness of 'mass vaccination' for its replication in other states of India or countries with similar socio-economic and rearing environments.


Assuntos
Doenças das Cabras/prevenção & controle , Programas de Imunização , Peste dos Pequenos Ruminantes/prevenção & controle , Vírus da Peste dos Pequenos Ruminantes/imunologia , Doenças dos Ovinos/prevenção & controle , Vacinação/veterinária , Animais , Surtos de Doenças/veterinária , Feminino , Doenças das Cabras/mortalidade , Doenças das Cabras/virologia , Cabras , Incidência , Índia/epidemiologia , Masculino , Peste dos Pequenos Ruminantes/mortalidade , Peste dos Pequenos Ruminantes/virologia , Risco , Ovinos , Doenças dos Ovinos/mortalidade , Doenças dos Ovinos/virologia
4.
Prev Vet Med ; 160: 47-53, 2018 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-30388997

RESUMO

A novel syndromic surveillance approach was used to describe small ruminant health in Myanmar, to help overcome limitations in disease diagnosis common in many parts of the world, especially in low and middle income countries (LMICs). Observations were made from July 2015 to June 2016 of ten clinical syndromes in 12 goat herds and sheep flocks owned by smallholders in the Central Dry Zone. Strengths and weaknesses to using syndromic surveillance in a village setting were identified using a formal surveillance evaluation framework, 'SERVAL'. Larger reporting teams made disproportionately more reports than smaller ones (86% compared to 14% of all reports, with a reporting rate ratio of 4.3 95% CI 3.5-5.4), which may have affected surveillance sensitivity. The benefits of the syndromic surveillance included its relatively low cost and ability to produce quantitative disease estimates that could be used to prioritise further disease investigation and extension activities. In particular, significant mortality was observed, with monthly mortality of 3.0% (95% CI 2.5-3.7%) and 0.28% (0.15-0.53%) in young and adult animals, respectively, and a population attributable fraction of mortality for young animals of 82% (68-91%). Mortality was associated with ill-thrift in young animals but had not previously been considered an important production-limiting condition in Myanmar. This information contributes to an understanding of the prevalence of excessive mortality in smallholder goat and sheep production systems. It is a practical example of the use of syndromic surveillance in a LMIC livestock production system, the results of which can direct future disease research, treatment and prevention to improve the health and productivity of small ruminants in Myanmar.


Assuntos
Doenças das Cabras/epidemiologia , Vigilância de Evento Sentinela/veterinária , Doenças dos Ovinos/epidemiologia , Fatores Etários , Animais , Doenças das Cabras/diagnóstico , Doenças das Cabras/mortalidade , Cabras , Estudos Longitudinais , Mianmar/epidemiologia , Risco , Ovinos , Doenças dos Ovinos/diagnóstico , Doenças dos Ovinos/mortalidade
5.
J Vet Intern Med ; 32(6): 2105-2114, 2018 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-30307649

RESUMO

BACKGROUND: Obstructive urolithiasis is a common disease associated with a guarded prognosis in small ruminants. HYPOTHESIS/OBJECTIVE: The results of physical examination, laboratory analyses, and clinical management of male small ruminants presented to 2 referral clinics were investigated to identify variables significantly associated with disease outcome, so as to provide better recommendations to animal owners regarding the management of these patients. ANIMALS: Two-hundred ten small ruminants (130 sheep and 80 goats) with confirmed diagnosis of obstructive urolithiasis. METHODS: Clinical findings (including diagnostic imaging) and laboratory results of the 210 animals were reviewed, and relevant information regarding clinical and laboratory variables recorded upon admission and clinical management was retrieved. The association of the different variables with nonsurvival was investigated by univariable and multivariable logistic regression models. RESULTS: Only 39% of all patients considered for treatment and 52% of those undergoing tube cystostomy survived to be released from the clinic. Nonsurvival was strongly associated with a very poor clinical condition upon presentation, obesity, castration, and evidence of uroperitoneum. Among blood variables, abnormal PCV, severely increased serum creatinine concentrations, and increased activity of the creatine kinase were associated with increased risk of nonsurvival. Presence of signs of colic or macroscopic appearance of urine was not significantly associated with outcome. CONCLUSIONS AND CLINICAL IMPORTANCE: The prognosis of obstructive urolithiasis was guarded with survival rates of 39% (overall) to 52% (after tube cystostomy). Intact young males with normal body condition presented early in the course of disease had the best chances of survival.


Assuntos
Doenças das Cabras/mortalidade , Doenças dos Ovinos/mortalidade , Urolitíase/veterinária , Animais , Doenças das Cabras/patologia , Doenças das Cabras/terapia , Cabras , Masculino , Orquiectomia/veterinária , Fatores de Risco , Ovinos , Doenças dos Ovinos/patologia , Doenças dos Ovinos/terapia , Obstrução Uretral/mortalidade , Obstrução Uretral/patologia , Obstrução Uretral/terapia , Obstrução Uretral/veterinária , Urolitíase/mortalidade , Urolitíase/patologia , Urolitíase/terapia
7.
Vet Microbiol ; 211: 141-149, 2017 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-29102110

RESUMO

Schmallenberg virus (SBV) is an emerging virus responsible for congenital malformations in the offspring of domestic ruminants. It is speculated that infection of pregnant dams may also lead to a significant number of unrecognized fetal losses during the early period of gestation. To assess the pathogenic effects of SBV infection of goats in early pregnancy, we inoculated dams at day 28 or 42 of gestation and followed the animals until day 55 of gestation. Viremia in the absence of clinical signs was detected in all virus-inoculated goats. Fetal deaths were observed in several goats infected at day 28 or 42 of gestation and were invariably associated with the presence of viral genomic RNA in the affected fetuses. Among the viable fetuses, two displayed lesions in the central nervous system (porencephaly) in the presence of viral genome and antigen. All fetuses from goats infected at day 42 and the majority of fetuses from goats infected at day 28 of gestation contained viral genomic RNA. Viral genome was widely distributed in these fetuses and their respective placentas, and infectious virus could be isolated from several organs and placentomes of the viable fetuses. Our results show that fetuses of pregnant goats are susceptible to vertical SBV infection during early pregnancy spanning at least the period between day 28 and 42 of gestation. The outcomes of experimental SBV infection assessed at day 55 of gestation include fetal mortalities, viable fetuses displaying lesions of the central nervous system, as well as viable fetuses without any detectable lesion.


Assuntos
Infecções por Bunyaviridae/veterinária , Doenças das Cabras/virologia , Orthobunyavirus/isolamento & purificação , Animais , Infecções por Bunyaviridae/mortalidade , Infecções por Bunyaviridae/virologia , Feminino , Feto/virologia , Doenças das Cabras/mortalidade , Cabras , Orthobunyavirus/genética , Placenta/virologia , Gravidez , Viremia/veterinária , Viremia/virologia
8.
Prev Vet Med ; 146: 79-85, 2017 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-28992931

RESUMO

In the present study, we quantified the effect of livestock services provided through paravets (intermediate-level training in veterinary medicine) on mortality and offtake of small ruminants in Western Afghanistan for the years 2010, 2011 and 2013. We compared mortality in adult and in young stock, and offtake of young stock of 120 livestock owners that made use of the paravet services (Users) with 120 livestock owners who did not make use of these services (Non-users). Security issues in the districts under study influenced the choice of villages. Within villages, livestock owners were purposively selected based on their known use of the services, including the provision of biologicals such as anthelmintics and vaccines. In addition, we subdivided both categories into 'partial' and 'full' based on the intensity of use of biologicals. Paravets were not only trained on preventive and curative veterinary medicine, they were also trained in extension and trained on adhering to a cold-chain and applying quality biologicals. For Non-users there was the possibility to buy biologicals through a local market or bazaar. In Afghanistan, local markets have an extensive supply of vaccines, anthelmintics, and medicines from a variety of sources, often not handled appropriately and therefore of varying quality. The results indicated that livestock owners making partial or full use of the paravet services had statistically significant better animal health and production results. The mortalities in adult stock, expressed as Incidence Rate Ratios (IRRs), for the partial-Users and full-Users categories were estimated to be respectively 0.80 and 0.73 times the mortality observed in the partial Non-users', the reference category. A similar result was observed for young stock mortality with estimated IRRs of 0.81 and 0.77 for partial and full-Users category respectively. The offtake for partial- and full-Users category livestock owners were 1.24 and 1.21 times higher compared with the reference category. In conclusion, we demonstrated significant improvement of health and production parameters in small ruminants' flocks of owners making use of the services of the DCA-trained paravets, emphasizing the importance of this sustainable and effective system of private veterinary service delivery in Afghanistan.


Assuntos
Técnicos em Manejo de Animais/estatística & dados numéricos , Fazendeiros/psicologia , Doenças das Cabras/psicologia , Conhecimentos, Atitudes e Prática em Saúde , Doenças dos Ovinos/psicologia , Afeganistão/epidemiologia , Animais , Anti-Helmínticos/uso terapêutico , Comércio , Uso de Medicamentos , Doenças das Cabras/tratamento farmacológico , Doenças das Cabras/mortalidade , Doenças das Cabras/prevenção & controle , Cabras , Gado , Distribuição de Poisson , Ovinos , Doenças dos Ovinos/tratamento farmacológico , Doenças dos Ovinos/mortalidade , Doenças dos Ovinos/prevenção & controle , Inquéritos e Questionários , Vacinas/uso terapêutico
9.
Toxicon ; 135: 12-16, 2017 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-28576552

RESUMO

The epidemiological, clinical and pathological aspects of a spontaneous outbreak of Palicourea aeneofusca poisoning in goats are reported. The main clinical signs were motor incoordination, generalized muscle tremors, broad-based posture, tachypnea, tachycardia, vocalization and respiratory distress. Two goats died 5 and 20 min after the observation of the first clinical signs. Another that was found recumbent died 80 h later. One goat with mild clinical signs recovered. Congestion and hemorrhages were observed macroscopically and histologically in most organs. Pulmonary edema was also observed. The main microscopic findings consisted of cytoplasmic vacuolization and necrosis of the renal tubular epithelium. The average concentration of monofluoroacetate obtained in sixteen samples of P. aeneofusca was 0.29 ± 0.17%. It is concluded that P. aeneofusca is toxic to goats under natural conditions.


Assuntos
Doenças das Cabras/induzido quimicamente , Insuficiência Cardíaca/veterinária , Intoxicação por Plantas/veterinária , Rubiaceae/química , Rubiaceae/intoxicação , Animais , Brasil/epidemiologia , Fluoracetatos/análise , Doenças das Cabras/mortalidade , Cabras , Insuficiência Cardíaca/induzido quimicamente , Túbulos Renais/patologia , Intoxicação por Plantas/mortalidade , Edema Pulmonar/induzido quimicamente
10.
J Vet Intern Med ; 30(5): 1752-1757, 2016 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-27527918

RESUMO

BACKGROUND: Goats and sheep are more likely to be presented for examination for seizures than are cattle, possibly as a consequence of their relatively smaller body size. Currently, no reports describing seizure disorders in goats and sheep are available. OBJECTIVES: To describe clinical features and treatment outcomes of sheep and goats presented for seizures. ANIMALS: A total of 59 goats and 21 sheep presented for seizures. METHODS: Retrospective study. Medical records from 1994 to 2014 at the Veterinary Medical Teaching Hospital, University of California, Davis, were reviewed. Descriptive statistics were used to summarize data. Logistic regression was performed to determine whether variables were associated with mortality. RESULTS: The majority of seizures in goats and sheep had structural or metabolic causes. Polioencephalomalacia (PEM) secondary to ruminal lactic acidosis or PEM of undetermined cause was the most frequently diagnosed cause of seizures in goats and sheep. The proportions of mortality in goats and sheep were 49.2 and 42.9%, respectively. Age increased the odds mortality (odds ratio [OR], 1.51; 95% confidence interval [CI], 1.07, 2.14) in goats. Goats with structural or metabolic causes of seizures had higher odds for mortality (OR, 37.48; 95% CI, 1.12, 99.10) than those with unknown causes. Age and etiological diagnosis were not significant (P > .05) predictors of mortality in affected sheep. CONCLUSIONS AND CLINICAL RELEVANCE: Seizure disorders in goats and sheep are associated with high mortality, despite treatment. Current treatment in goats and sheep with seizures warrants further investigation to determine whether treatments are beneficial or detrimental to survival.


Assuntos
Doenças das Cabras/patologia , Convulsões/veterinária , Doenças dos Ovinos/patologia , Animais , Doenças das Cabras/etiologia , Doenças das Cabras/mortalidade , Cabras , Razão de Chances , Estudos Retrospectivos , Fatores de Risco , Convulsões/etiologia , Convulsões/mortalidade , Convulsões/patologia , Ovinos , Doenças dos Ovinos/etiologia , Doenças dos Ovinos/mortalidade
11.
Onderstepoort J Vet Res ; 82(1): E1-4, 2015 Aug 21.
Artigo em Inglês | MEDLINE | ID: mdl-26304168

RESUMO

Eight outbreaks of peste des petits ruminants in sheep and goats were reported in White Nile State, Sudan, between 2008 and 2009. A mortality rate of 4.2% was reported across the different outbreaks. Clinically the disease was characterised by high fever, ocular and nasal discharge, pneumonia, ulceration of the mucous membranes, diarrhoea and death. The postmortem findings included necrotic lesions in the mouth and gastrointestinal tract, and swollen, oedematous lymph nodes associated with the lungs and intestine. Of the 209 serum samples tested by competitive enzyme-linked immunosorbent assay, 113 (54%) were found positive. Peste des petits ruminants virus was confirmed in tissues, nasal swabs and blood samples by immunocapture enzyme-linked immunosorbent assay, reverse-transcription polymerase chain reaction and isolation of the virus in culture of lamb testicle cells.


Assuntos
Surtos de Doenças/veterinária , Doenças das Cabras/epidemiologia , Peste dos Pequenos Ruminantes/epidemiologia , Vírus da Peste dos Pequenos Ruminantes/isolamento & purificação , Doenças dos Ovinos/epidemiologia , Animais , Doenças das Cabras/mortalidade , Doenças das Cabras/virologia , Cabras , Peste dos Pequenos Ruminantes/mortalidade , Peste dos Pequenos Ruminantes/virologia , Ovinos , Doenças dos Ovinos/mortalidade , Doenças dos Ovinos/virologia , Sudão/epidemiologia
12.
J Dairy Sci ; 98(7): 4535-43, 2015 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-25935248

RESUMO

A prospective cohort study was conducted on 1,081 dairy goats from 10 commercial herds in Québec (Canada) to define prepartum hyperketonemia based on optimal blood ß-hydroxybutyrate acid threshold values for the early prediction of pregnancy toxemia (PT) and mortality in late-gestation dairy goats. All pregnant goats had blood sampled weekly during the last 5wk of pregnancy. The blood was analyzed directly on the farm for ß-hydroxybutyrate acid quantification using a Precision Xtra meter (Abbott Diabetes Care, Saint-Laurent, QC, Canada). Body condition scores on the lumbar region and sternum were noted. Each goat was classified as being at low (n=973) or high risk (n=108) of having PT by producers based on a standardized definition. The optimal threshold for predicting a PT diagnosis or mortality for each week before kidding was determined based on the highest sum of sensitivity and specificity. The association between hyperketonemia and subsequent PT was tested using a multivariable logistic regression model considering hyperketonemia at wk 4 prepartum, litter size, and body condition score at wk 4 prepartum as covariates, and herd and parturition cohort as random effects. The association between mortality and hyperketonemia was also tested using a logistic regression model accounting for the presence or absence of treatment during the last month of pregnancy. The hyperketonemia definition based on PT varied between ≥0.4 and ≥0.9mmol/L during the last 5wk prepartum. Goats affected by hyperketonemia at wk 4 prepartum and with a large litter size (≥3 fetuses) had 2.1 and 40.5 times the odds, respectively, of subsequent PT than other goats. Hyperketonemia definitions based on mortality varied between ≥0.6 and ≥1.4mmol/L during the last 4wk prepartum, and was ≥1.7mmol/L during the first week postpartum. Goats affected by hyperketonemia and treated by producers had 3.4 and 11.8 times the odds, respectively, of subsequent mortality than did other goats. These results showed that prepartum hyperketonemia could be defined in dairy goats using subsequent risks of PT or mortality during the last month of pregnancy.


Assuntos
Doenças das Cabras/sangue , Cetose/veterinária , Complicações na Gravidez/veterinária , Ácido 3-Hidroxibutírico/sangue , Animais , Canadá , Bovinos , Estudos de Coortes , Feminino , Doenças das Cabras/mortalidade , Cabras/sangue , Cetose/sangue , Cetose/terapia , Modelos Logísticos , Período Pós-Parto , Gravidez , Complicações na Gravidez/sangue , Estudos Prospectivos , Quebeque , Fatores de Risco , Sensibilidade e Especificidade , Toxemia/epidemiologia , Toxemia/veterinária
13.
BMC Vet Res ; 10: 263, 2014 Nov 14.
Artigo em Inglês | MEDLINE | ID: mdl-25394771

RESUMO

BACKGROUND: Peste des Petits Ruminants (PPR), also known as Goat Plague, occurs in goats, sheep and related species. It is caused by a morbillivirus in the family Paramyxoviridae. In Bangladesh PPR is endemic and it causes serious economic losses. Pathology of PPR has been reported in different goat and sheep breeds from natural and experimental infections. Field results are better indicators of pathogenicity of the circulating virus. The severity of the disease varies with species, breed and immune status of the host. Pathological investigations of natural outbreaks of PPR in Balck Bengal goats are very limited. The current investigation was aimed at describing pathology and antigen localization in natural PPR infections in Black Bengal goats. RESULTS: A total of 28 outbreaks were investigated clinically and virologically. Average flock morbidity and mortality were 75% and 59%, respectively, with case fatality rate of 74%. Necropsy was conducted on 21 goats from 15 outbreaks. The major gross lesions were congestion of gastrointestinal tract, pneumonia, engorged spleen, and oedematous lymphnodes. Histopathological examination revealed severe enteritis with denudation of intestinal epithelium, severe broncho-interstitial pneumonia with macrophages within lung alveoli and extensive haemorrhages with depletion of lymphoid cells and infiltration of macrophages in the sinuses of spleen. In lymph nodes, the cortical nodules were replaced by wide sinusoids with severe depletion of lymphocytes, infiltration of mononuclear cells and some giant cells in sub-capsular areas and medullary sinuses. PPR virus antigen was found in pneumocytes and alveolar macrophages in lungs. Viral RNA could be detected by RT-PCR in 69 out of 84 nasal swab, 59 out of 84 blood and 21 out of 21 lymph node samples. Sequence analyses revealed closeness of Bangladeshi strains with other recent Asian isolates. CONCLUSION: Natural outbreaks of PPR in Black Bengal goats in Bangladesh resulted in 75% and 59% flock morbidity and mortality, respectively, with a case fatality rate of 74%. The striking histo-morphologic diagnosis of PPR was acute pneumonia and severe gastro-enteritis. A detailed experimental pathological study on Black Bengal goats infected with recent isolates is required.


Assuntos
Doenças das Cabras/virologia , Peste dos Pequenos Ruminantes/virologia , Animais , Bangladesh/epidemiologia , Surtos de Doenças/veterinária , Doenças das Cabras/epidemiologia , Doenças das Cabras/mortalidade , Doenças das Cabras/patologia , Cabras/virologia , Linfonodos/patologia , Linfonodos/virologia , Peste dos Pequenos Ruminantes/epidemiologia , Peste dos Pequenos Ruminantes/mortalidade , Peste dos Pequenos Ruminantes/patologia
14.
Vet Microbiol ; 173(1-2): 156-9, 2014 Sep 17.
Artigo em Inglês | MEDLINE | ID: mdl-25069622

RESUMO

Contagious caprine pleuropneumonia (CCPP) is an infectious respiratory disease mainly affecting domestic goats. As CCPP has never been documented in grazing antelopes (subfamily hippotraginae), they were not considered susceptible. Mycoplasma capricolum subspecies capripneumoniae (Mccp) was isolated from pleural liquid collected during the necropsy of a severely emaciated Arabian oryx with mild nasal discharge. The Mccp isolate was then genotyped using a multilocus sequence scheme; the sequence type was identical to the Mccp strain previously identified in a sand gazelle from a nearby enclosure. This case shows for the first time that members of the hippotraginae subfamily, here the Arabian oryx, can be affected by CCPP. In addition, genotyping shows that the oryx was most probably infected, at a distance, by sand gazelles.


Assuntos
Doenças das Cabras/transmissão , Mycoplasma capricolum/genética , Pleuropneumonia Contagiosa/transmissão , Animais , Antílopes , Genótipo , Doenças das Cabras/epidemiologia , Doenças das Cabras/microbiologia , Doenças das Cabras/mortalidade , Cabras , Mycoplasma capricolum/classificação , Mycoplasma capricolum/isolamento & purificação , Pleuropneumonia Contagiosa/epidemiologia , Pleuropneumonia Contagiosa/microbiologia , Pleuropneumonia Contagiosa/mortalidade , Emirados Árabes Unidos/epidemiologia
15.
Vet Parasitol ; 202(3-4): 326-9, 2014 May 28.
Artigo em Inglês | MEDLINE | ID: mdl-24636788

RESUMO

Preliminary results obtained in calves, lambs and goat kids infected by Cryptosporidium sp. have indicated a partial prophylactic efficacy of halofuginone lactate when administered at 100 µg/kg body weight (BW). In this study, the efficacy of halofuginone lactate was evaluated in goat neonates experimentally inoculated with Cryptosporidium parvum oocysts per oral route. The trial consisted in 2 replicated experiments carried out successively at 2 months of interval. Twenty-two 2- to 4-day-old kids were experimentally inoculated once, 2-3 days after the arrival in premises, with 10(6)C. parvum oocysts per oral route and were allocated into 2 groups. Animals of group 1 acted as untreated control whereas animals of group 2 received halofuginone lactate for 10 days from the infection day to day 9 post-infection (DPI) at a daily oral dose rate of 100 µg/kg BW. Individual oocyst shedding was monitored by daily examination of faecal smears stained by carbol fuchsin and scored semi-quantitatively (0-5) until 19 DPI. Daily diarrhoea scores, weight gain and mortality were recorded. In the first experiment, oocyst excretion started 1 DPI in the control group, was highest on 4 DPI (mean score 3.6) and became undetectable from 16-19 DPI. In the treated group, oocyst shedding started 1 day later, showed lower scores compared to control on 4, 5, 6, 7 and 10 DPI and vanished from 16 to 19 DPI. No significant difference was seen for weight gains between groups. Five kids died in the control group compared to 1 kid in the treated group. In the second (replicated) experiment, oocyst excretion started 2 DPI in the control group, was highest on 4 DPI (mean score 4.5) and became undetectable 18 and 19 DPI. In the treated group, oocyst shedding started 2 days later, peaked on 13 DPI (mean score 2.3) and persisted until the end of the experiment. No significant difference was seen for weight gains between groups. Ten kids died in the control group compared to 3 kids in the treated group. The results demonstrated the efficacy of halofuginone lactate when given as a prophylactic treatment at 100 µg/kg BW during 10 days in reducing oocyst shedding, diarrhoea and mortality in goat kid cryptosporidiosis.


Assuntos
Animais Recém-Nascidos/parasitologia , Doenças das Cabras/tratamento farmacológico , Quinazolinonas/uso terapêutico , Animais , Criptosporidiose/tratamento farmacológico , Criptosporidiose/mortalidade , Criptosporidiose/veterinária , Cryptosporidium parvum , Fezes/parasitologia , Doenças das Cabras/mortalidade , Cabras , Contagem de Ovos de Parasitas/veterinária , Resultado do Tratamento
16.
Can Vet J ; 54(6): 581-7, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-24155449

RESUMO

The objectives of this study were to determine the main causes of mortality, with a special focus on caseous lymphadenits as a cause of death or wasting in caprine herds from Quebec. Goats (n = 152) from 13 herds were submitted for necropsy; the cause of mortality, and the presence, location, and cause of abscesses (if present) were recorded. Proportional mortalities were distributed as: Clostridium perfringens type D enterotoxemia (17.1%), pneumonia (13.8%), paratuberculosis (10.5%), listeriosis (6.6%), pregnancy toxemia (5.3%), caprine arthritis-encephalitis (4.6%), and caseous lymphadenitis (3.9%). Caseous lymphadenitis was diagnosed in 24.3% of the submitted goats, but was not a major cause of wasting or mortality. Abscesses were localized internally in 54.1% of the cases. Paratuberculosis was diagnosed in 29 goats (16 as cause of death) and was considered a major cause of wasting and/or mortality.


Mortalité proportionnelle: Une étude de 152 chèvres soumises pour nécropsie provenant de 13 élevages caprins du Québec, avec une attention particulière à la lymphadénite caséeuse. Les objectifs de cette étude furent de déterminer les principales causes de mortalité avec une attention particulière à la lymphadénite caséeuse comme cause de mortalité ou de dépérissement chez les chèvres du Québec. Cent-cinquante-deux chèvres provenant de 13 élevages différents ont été soumises pour nécropsie; la cause de mortalité, la présence d'abcès, leur localisation et leur cause (s'il y a lieu) furent compilées. Les mortalités proportionnelles furent distribuées ainsi : entérotoxémie de type D (17,1 %), pneumonie (13,8 %), paratuberculose (10,5 %), listériose (6,6 %), toxémie de gestation (5,3 %), arthrite-encéphalite caprine (4,6 %) et lymphadénite caséeuse (3,9 %). La lymphadénite caséeuse a été diagnostiquée chez 24,3 % des chèvres soumises, mais sans être une cause majeure de dépérissement et de mortalité. Les abcès étaient localisés de façon interne dans 54,1 % des cas. Au total, la paratuberculose a été diagnostiquée chez 29 chèvres (16 en étant décédées) et fut considérée comme une cause majeure de dépérissement et/ou de mortalité.(Traduit par les auteurs).


Assuntos
Infecções por Corynebacterium/veterinária , Doenças das Cabras/mortalidade , Linfadenite/veterinária , Abscesso/epidemiologia , Abscesso/microbiologia , Abscesso/patologia , Abscesso/veterinária , Animais , Infecções por Clostridium/epidemiologia , Infecções por Clostridium/mortalidade , Infecções por Clostridium/patologia , Infecções por Clostridium/veterinária , Clostridium perfringens , Infecções por Corynebacterium/epidemiologia , Infecções por Corynebacterium/microbiologia , Infecções por Corynebacterium/mortalidade , Corynebacterium pseudotuberculosis/isolamento & purificação , Enterotoxemia/epidemiologia , Enterotoxemia/microbiologia , Enterotoxemia/mortalidade , Enterotoxemia/patologia , Feminino , Doenças das Cabras/epidemiologia , Doenças das Cabras/patologia , Cabras , Linfadenite/epidemiologia , Linfadenite/mortalidade , Linfadenite/patologia , Masculino , Quebeque/epidemiologia
17.
Parasit Vectors ; 6(1): 242, 2013 Aug 22.
Artigo em Inglês | MEDLINE | ID: mdl-23965311

RESUMO

BACKGROUND: Wildlife radio tracking has gained popularity during the recent past. Ecologists and conservationists use radio-collars for different purposes: animal movement monitoring, home range, productivity, population estimation, behaviour, habitat use, survival, and predator-prey interaction, among others. The aim of our present study is to highlight the application of radio-collars for wildlife diseases monitoring. The spread of wildlife diseases and the efficacy of management actions for controlling them propose serious challenges for ecologists and conservationists, since it is difficult to re-capture (or simply observe) the same animal in pre-determined temporal interval, but such difficulty is overcome by the use of gps-gsm radio collars. METHODS: In the present study we report, for the first time to our knowledge, the use of radio-collars in the monitoring of Iberian ibex affected by Sarcoptes scabiei in Sierra Nevada mountain range, Spain. Twenty-five moderate or slightly mangy animals were radio-collared between 2006 and 2013. RESULTS: The radio-collars allowed us to confirm the presence of resistance to S. scabiei within Iberian ibex population. Twenty (80%) of the collared animals recovered totally from mange, while the disease progressed in the other five Iberian ibex (20% of the collared animals) and the animals died. The average estimated recovery time of the resistant animals was 245 ± 277 days, and the estimated average survival time of the non-resistant Iberian ibex was 121 ± 71 days. Non-resistant animals survived at least 100 days, while all of them died with less than 200 days. Sixty per cent of the resistant animals were recovered with less than 200 days. CONCLUSIONS: We report, for the first time, the successful use of radio collars for wildlife diseases monitoring using Iberian ibex/S. scabiei as a model. By using radio collars we documented that most of the Sarcoptes-infected Iberian ibex are resistant to this disease, and we estimated the average time for Iberian ibex recovering from mange infection and the average survival time of the non-resistant ones. We expect wider use of radio-collars for wild animals diseases monitoring, affected/not-affected animals interaction, and treatment efficacy, among others.


Assuntos
Animais Selvagens/parasitologia , Monitoramento Epidemiológico/veterinária , Doenças das Cabras/epidemiologia , Dispositivo de Identificação por Radiofrequência/estatística & dados numéricos , Sarcoptes scabiei/fisiologia , Escabiose/epidemiologia , Animais , Doenças das Cabras/mortalidade , Doenças das Cabras/parasitologia , Cabras , Escabiose/mortalidade , Escabiose/parasitologia , Espanha/epidemiologia
18.
J Wildl Dis ; 49(1): 55-68, 2013 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-23307372

RESUMO

Border disease virus (BDV) causes high mortality in Pyrenean chamois (Rupicapra pyrenaica) on the French and Spanish sides of the Pyrenees Mountains. We investigated the pathology induced by BDV in pregnant chamois via experimental infection. Three females were inoculated during the second third of pregnancy with a BDV-4 subgroup strain isolated from a wild Pyrenean chamois during an acute epizootic. A fourth pregnant chamois and one nonpregnant ewe were kept as negative controls. Animals were monitored to assess clinical signs, hematology, viremia, and serology. Postmortem examinations included necropsy, histopathology, and quantification of viral RNA in organs. Pregnancy was unsuccessful in all inoculated animals. One died 24 days postinoculation (dpi) without showing any precursory clinical signs. The second animal had profuse diarrhea from 13 dpi to its death at 51 dpi. The third aborted at 46 dpi and was euthanized at 51 dpi. All animals were viremic from 4 dpi until death. Neutralizing antibodies against BDV-4 were detected from 12 dpi. Necropsies showed generalized lymphadenomegaly, associated in one case with disseminated petechial hemorrhages in the digestive tract. Seventy-eight of 79 organs from inoculated adults and their fetuses had detectable viral RNA. The main histologic lesions in adults were mild lymphohistiocytic encephalitis associated with moderate or moderately severe lymphoid depletion. Control animals remained negative for virus (in blood and organs), antibody, and lesions upon postmortem examination. BDV infection during pregnancy in Pyrenean chamois causes severe disease leading to abortion, then death. Despite 100% fetal death following inoculation, viral RNA was recovered from all organs of infected fetuses, suggesting that persistently infected offspring could be born. Our results may help explain the reported decrease in chamois populations in several areas and suggest that great care must be taken when interpreting infection status for wildlife.


Assuntos
Doença da Fronteira/patologia , Doenças das Cabras/patologia , Complicações Infecciosas na Gravidez/veterinária , Rupicapra , Aborto Animal/virologia , Animais , Animais Selvagens/virologia , Doença da Fronteira/mortalidade , Doença da Fronteira/virologia , Vírus da Doença da Fronteira , Feminino , França , Doenças das Cabras/mortalidade , Doenças das Cabras/virologia , Cabras , Gravidez , Complicações Infecciosas na Gravidez/mortalidade , Complicações Infecciosas na Gravidez/patologia , Complicações Infecciosas na Gravidez/virologia , RNA Viral/análise , Espanha
20.
Transbound Emerg Dis ; 59(2): 173-6, 2012 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-22074184

RESUMO

Between August 2010 and February 2011, over 750 deaths were recorded among wild goats (Capra aegagrus, the endangered progenitor of the domestic goat) in Kurdistan. Based on the clinical signs and post-mortem findings, the involvement of peste des petits ruminants virus (PPRV) was suspected. This was confirmed by laboratory analysis, and the virus was found to be closely related to a Turkish strain isolated in 2000. During the outbreak in wild goats, no disease in domestic animals was reported. Domestic ruminants in the region are routinely vaccinated with an attenuated vaccine based on the 'Nigeria/75/1' strain of PPRV. This is the first report of active PPRV infection in Kurdistan and most likely the immunity afforded by vaccination prevented spillover infections. It is therefore recommended to continue with the campaign. Conversely, there is no justification for the use of force to keep the endangered wild goats away from domestic flocks.


Assuntos
Doenças das Cabras/mortalidade , Peste dos Pequenos Ruminantes/mortalidade , Vírus da Peste dos Pequenos Ruminantes/classificação , Animais , Animais Selvagens , Doenças das Cabras/epidemiologia , Doenças das Cabras/virologia , Cabras , Iraque/epidemiologia , Peste dos Pequenos Ruminantes/epidemiologia , Peste dos Pequenos Ruminantes/virologia , Vacinas Virais/imunologia
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