Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 9 de 9
Filtrar
Mais filtros

Intervalo de ano de publicação
1.
Arq. Inst. Biol ; 87: e0802018, 2020. tab
Artigo em Inglês | LILACS, VETINDEX | ID: biblio-1118053

Resumo

This research evaluated the effect of milking on the physical exam of the mammary gland (MG) and milk examination in Saanen goats. Six properties were selected, four farms were used after evaluation of criteria selection and distributed in two groups according to the milking method: manual or mechanical. The physical examination of MG was performed using the techniques of inspection and palpation, in addition to the examination of the milk by strip cup, California Mastitis Test, somatic cell count, and bacteriological exam. It was possible to detect an association between the milking method with the most of physical exam of the MG: inspection of the MG (p = 0.001), inspection of the teat (p = 0.002), palpation of the MG (p = 0.054) and palpation of the teat (p = 0.036). The machine milking had an association with the reduction of the volume of MG (OR = 6.00), reduction of the teat size (OR = 16.19), and firm consistency of mammary parenchyma (OR = 2.39). The use of machine milking represented a less risk for an increase of the volume of the MG volume (OR = 0.288) and the presence of cisternitis (OR = 0.490). The association between the SCC and the type of milking was also detected (p = 0.002). Machine milking was associated with changesin the physical exam of MG and milk examination compatible with traumatic lesions. This information indicates inappropriate use of milking equipment in the dairy goat's properties.(AU)


Esta pesquisa avaliou o efeito da ordenha sobre o exame físico da glândula mamária (GM) e do leite em cabras Saanen. Seis propriedades foram selecionadas, quatro fazendas foram utilizadas após avaliação da seleção dos critérios e distribuídas em dois grupos de acordo com o método de ordenha: manual ou mecânico. O exame físico da GM foi realizado utilizando as técnicas de inspeção e palpação, além do exame do leite pelo teste da caneca de fundo escuro, California Mastitis Test, contagem de células somáticas e exame bacteriológico. Foi possível detectar uma associação entre o método de ordenha com a maioria dos exames físicos da GM: inspeção da GM (p = 0,001), inspeção do teto (p = 0,002), palpação da GM (p = 0,054) e palpação do teto (p = 0,036). A ordenha mecânica associou-se com a redução do volume de GM (OR = 6,00), redução do tamanho do teto (OR = 16,19) e consistência firme do parênquima mamário (OR = 2,39). O uso da ordenha mecânica representou menor risco para o aumento do volume do volume da GM (OR = 0,288) e presença da cisternite (OR = 0,490). Também foi detectada a associação entre a CCS e o tipo de ordenha (p = 0,002). A ordenha mecânica foi associada com as alterações no exame físico de GM e do leite compatíveis com lesões traumáticas. Essas informações indicam o uso inadequado do equipamento de ordenha na criação de cabras leiteiras.(AU)


Assuntos
Bovinos , Palpação , Glândulas Mamárias Animais , Exame Físico/veterinária , Contagem de Células/métodos , Leite , Encefalite da Califórnia/diagnóstico
2.
Acta sci. vet. (Impr.) ; 48: Pub.1750-Jan. 30, 2020. tab, graf
Artigo em Inglês | VETINDEX | ID: biblio-1458273

Resumo

Background: Physiological and immunological adaptations occurred in peripartum period may be responsible for susceptibility to intramammary infections during colostrogenesis. Increase in blood flow and hormones cause physiological edema by accumulation of lymphatic fluid in interstitial space. Specific composition of mammary secretion increases the susceptibility to mastitis. So, the study of physical, cellular and microbiological changes in the mammary gland in this period are fundamental for understanding, diagnosing and adopting prophylactic measures for bovine mastitis. This study aimed to characterize physiological and pathological changes that occur in the mammary gland during transition period. Materials, Methods & Results: Thirteen cows, in second to fourth lactation were followed from 3 weeks pre-calving to 3 weeks post-calving. Cows were submitted weekly to physical examination of mammary gland, strip cup test, California Mastitis Test (CMT), Microscopic Somatic Cell Count (MSCC), and bacteriological examination of mammary secretion. Mammary quarters were divided into two groups: BAC-: samples that did not present bacteriological growth throughout transition period; BAC+: samples that presented bacteriological growth in at least two isolates of the same bacterial genus. Regarding physical examination of mammary gland, the parameters localized or generalized alteration in volume, asymmetry, reddish color, reduced skin elasticity, increased temperature, and swollen consistency presented higher frequencies in the BAC- group. On the other hand, infection in mammary quarters of cows from BAC+ group promoted a decrease in frequencies of increased volume, decreased elasticity, and elevated temperature in the mammary gland, in addition to a higher positivity to CMT and higher cellularity. Overall rate of intramammary...


Assuntos
Feminino , Animais , Bovinos , Doenças Mamárias/patologia , Doenças Mamárias/veterinária , Glândulas Mamárias Animais/fisiologia , Glândulas Mamárias Animais/patologia , Período Periparto/fisiologia , Colostro , Edema/veterinária
3.
Acta sci. vet. (Impr.) ; 48: Pub.1757-Jan. 30, 2020. tab
Artigo em Inglês | VETINDEX | ID: biblio-1458280

Resumo

Background: Newborn calves are born immunosuppressed, hypogammaglobulinemic, immunologically immature, and therefore more vulnerable to many infectious diseases. During pregnancy, the fetal-placental environment is regulated by Th2-type cytokines that neutralize Th1 responses, an important factor for immune defense against viral agents. The ingestion and absorption of colostral immunoglobulins enhance the immunity of the neonate. However, the presence of maternal antibodies might negatively affect the success of parental vaccination in the first two months of life. This study aimed to evaluate the effecacy of parenteral vaccination in newborn calves with high titers of maternal antibodies against respiratory viruses. Materials, Methods & Results: Twenty-eight Holstein calves were allocated to the vaccinated group (VAC, n = 18) or an unvaccinated control group (NVAC, n = 10). The initial vaccination with 5 mL of a commercial vaccine occurred around the 14th day of life (D14) and the booster at D35. Respiratory and diarrhea symptoms were evaluated at D12, D14, D16, D20, D31, D36, D45, D53, and D60. Blood samples were taken for leukogram, haptoglobin, and seroneutralization of BVDV, BoHV-1, BRSV, and BPI3V, at the time of vaccination at D14 (T1), at booster (D35, T2), and 21 days after the booster (D56, T3). Despite the increased prevalence of BRD during the period of the study, no calves from either group exhibited respiratory disease at D12 or D14. In subsequent assessments, the frequency of BRD increased over time in the VAC group until it reached a maximum prevalence of 38.9% (7/18) at D31. In the NVAC group, the maximum prevalence observed was 40% at D45 and D60. A comparison of the frequencies for BRD cases showed a statistical trend at D36 (P = 0.07), with a higher prevalence for the NVAC group (30%) in relation to the VAC group (5.6%). For the NVAC group, a greater number of total...


Assuntos
Animais , Recém-Nascido , Bovinos , Animais Recém-Nascidos/imunologia , Broncopneumonia/imunologia , Broncopneumonia/veterinária , Complexo Respiratório Bovino/imunologia , Complexo Respiratório Bovino/prevenção & controle , Imunidade Materno-Adquirida , Colostro
4.
Arq. Inst. Biol. ; 87: e0802018, 2020. tab
Artigo em Inglês | VETINDEX | ID: vti-28524

Resumo

This research evaluated the effect of milking on the physical exam of the mammary gland (MG) and milk examination in Saanen goats. Six properties were selected, four farms were used after evaluation of criteria selection and distributed in two groups according to the milking method: manual or mechanical. The physical examination of MG was performed using the techniques of inspection and palpation, in addition to the examination of the milk by strip cup, California Mastitis Test, somatic cell count, and bacteriological exam. It was possible to detect an association between the milking method with the most of physical exam of the MG: inspection of the MG (p = 0.001), inspection of the teat (p = 0.002), palpation of the MG (p = 0.054) and palpation of the teat (p = 0.036). The machine milking had an association with the reduction of the volume of MG (OR = 6.00), reduction of the teat size (OR = 16.19), and firm consistency of mammary parenchyma (OR = 2.39). The use of machine milking represented a less risk for an increase of the volume of the MG volume (OR = 0.288) and the presence of cisternitis (OR = 0.490). The association between the SCC and the type of milking was also detected (p = 0.002). Machine milking was associated with changesin the physical exam of MG and milk examination compatible with traumatic lesions. This information indicates inappropriate use of milking equipment in the dairy goat's properties.(AU)


Esta pesquisa avaliou o efeito da ordenha sobre o exame físico da glândula mamária (GM) e do leite em cabras Saanen. Seis propriedades foram selecionadas, quatro fazendas foram utilizadas após avaliação da seleção dos critérios e distribuídas em dois grupos de acordo com o método de ordenha: manual ou mecânico. O exame físico da GM foi realizado utilizando as técnicas de inspeção e palpação, além do exame do leite pelo teste da caneca de fundo escuro, California Mastitis Test, contagem de células somáticas e exame bacteriológico. Foi possível detectar uma associação entre o método de ordenha com a maioria dos exames físicos da GM: inspeção da GM (p = 0,001), inspeção do teto (p = 0,002), palpação da GM (p = 0,054) e palpação do teto (p = 0,036). A ordenha mecânica associou-se com a redução do volume de GM (OR = 6,00), redução do tamanho do teto (OR = 16,19) e consistência firme do parênquima mamário (OR = 2,39). O uso da ordenha mecânica representou menor risco para o aumento do volume do volume da GM (OR = 0,288) e presença da cisternite (OR = 0,490). Também foi detectada a associação entre a CCS e o tipo de ordenha (p = 0,002). A ordenha mecânica foi associada com as alterações no exame físico de GM e do leite compatíveis com lesões traumáticas. Essas informações indicam o uso inadequado do equipamento de ordenha na criação de cabras leiteiras.(AU)


Assuntos
Animais , Bovinos , Palpação , Glândulas Mamárias Animais , Exame Físico/veterinária , Contagem de Células/métodos , Leite , Encefalite da Califórnia/diagnóstico
5.
Acta Vet. Brasilica ; 13(2): 92-99, 13 jun. 2019. graf, tab
Artigo em Inglês | VETINDEX | ID: biblio-1453164

Resumo

The first months in the life of mammals are marked by many challenges, such as acquisition of maternal antibodies, immunological maturity, environmental exposure and food adaptation. These challenges may lead to changes in the concentration of inflammatory markers, as the acute phase proteins (APPs) and leukocytes. The better understanding of these markers behavior in physiological conditions is fundamental for diagnosis, monitoring, and prognosis of diseases. Therefore, the aim of this study was to determine the changes in the APPs and leukogram profile in Dorper lambs from birth until the sixth month of life. Samples were collected from 12 clinically healthy lambs at 0, 6, 12, 24, 48 hours and then at 7, 15, 30, 60, 90, 120, 150 and 180 days of age. All lambs were born with a low concentration of haptoglobin and ceruloplasmin. Significant increases occurred in the 48th hour and on the 7th day of life (P < 0.05), respectively. The highest APPs concentration was observed on the 90th day. All leukogram cells varied throughout the experimental period. It was possible to characterize the changes in APPs and leukogram profile from birth to six months of life in Dorper lambs. This study offers new perspectives on the use of APPs in lambs during the first months of life.


Os primeiros meses na vida dos mamíferos são marcados por muitos desafios, como a aquisição de anticorpos maternos, maturidade imunológica, exposição ambiental e adaptação alimentar. Esses desafios podem levar a mudanças na concentração de marcadores inflamatórios, como as proteínas de fase aguda (PFA) e leucócitos. A melhor compreensão do comportamento desses marcadores em condições fisiológicas é fundamental para o diagnóstico, monitoramento e prognóstico de doenças. Portanto, o objetivo deste estudo foi determinar as alterações no perfil das PFA e leucograma em cordeiros Dorper do nascimento ao sexto mês de vida. Foram coletadas amostras de 12 cordeiros clinicamente sadios às 0, 6, 12, 24, 48 horas e aos 7, 15, 30, 60, 90, 120, 150 e 180 dias de idade. Todos os cordeiros nasceram com baixa concentração de haptoglobina e ceruloplasmina. Aumentos significativos ocorreram com 48ª hora e 7º dia de vida (P < 0,05), respectivamente. A maior concentração de PFA foi observada no 90º dia. Todas as células do leucograma variaram ao longo do período experimental. Foi possível caracterizar as alterações no perfil das PFA e leucograma do nascimento até seis meses de vida em cordeiros Dorper. Este estudo oferece novas perspectivas sobre o uso das PFA em cordeiros durante os primeiros meses de vida.


Assuntos
Animais , Alergia e Imunologia , Leucócitos , Ovinos/crescimento & desenvolvimento , Reação de Fase Aguda , Biomarcadores , Estágios do Ciclo de Vida/imunologia
6.
Acta Vet. bras. ; 13(2): 92-99, 13 jun. 2019. graf, tab
Artigo em Inglês | VETINDEX | ID: vti-21714

Resumo

The first months in the life of mammals are marked by many challenges, such as acquisition of maternal antibodies, immunological maturity, environmental exposure and food adaptation. These challenges may lead to changes in the concentration of inflammatory markers, as the acute phase proteins (APPs) and leukocytes. The better understanding of these markers behavior in physiological conditions is fundamental for diagnosis, monitoring, and prognosis of diseases. Therefore, the aim of this study was to determine the changes in the APPs and leukogram profile in Dorper lambs from birth until the sixth month of life. Samples were collected from 12 clinically healthy lambs at 0, 6, 12, 24, 48 hours and then at 7, 15, 30, 60, 90, 120, 150 and 180 days of age. All lambs were born with a low concentration of haptoglobin and ceruloplasmin. Significant increases occurred in the 48th hour and on the 7th day of life (P < 0.05), respectively. The highest APPs concentration was observed on the 90th day. All leukogram cells varied throughout the experimental period. It was possible to characterize the changes in APPs and leukogram profile from birth to six months of life in Dorper lambs. This study offers new perspectives on the use of APPs in lambs during the first months of life.(AU)


Os primeiros meses na vida dos mamíferos são marcados por muitos desafios, como a aquisição de anticorpos maternos, maturidade imunológica, exposição ambiental e adaptação alimentar. Esses desafios podem levar a mudanças na concentração de marcadores inflamatórios, como as proteínas de fase aguda (PFA) e leucócitos. A melhor compreensão do comportamento desses marcadores em condições fisiológicas é fundamental para o diagnóstico, monitoramento e prognóstico de doenças. Portanto, o objetivo deste estudo foi determinar as alterações no perfil das PFA e leucograma em cordeiros Dorper do nascimento ao sexto mês de vida. Foram coletadas amostras de 12 cordeiros clinicamente sadios às 0, 6, 12, 24, 48 horas e aos 7, 15, 30, 60, 90, 120, 150 e 180 dias de idade. Todos os cordeiros nasceram com baixa concentração de haptoglobina e ceruloplasmina. Aumentos significativos ocorreram com 48ª hora e 7º dia de vida (P < 0,05), respectivamente. A maior concentração de PFA foi observada no 90º dia. Todas as células do leucograma variaram ao longo do período experimental. Foi possível caracterizar as alterações no perfil das PFA e leucograma do nascimento até seis meses de vida em cordeiros Dorper. Este estudo oferece novas perspectivas sobre o uso das PFA em cordeiros durante os primeiros meses de vida.(AU)


Assuntos
Animais , Ovinos/crescimento & desenvolvimento , Alergia e Imunologia , Reação de Fase Aguda , Leucócitos , Estágios do Ciclo de Vida/imunologia , Biomarcadores
7.
R. bras. Ci. Vet. ; 25(1): 22-26, jan.-mar. 2018. tab, ilus
Artigo em Português | VETINDEX | ID: vti-23884

Resumo

Objetivou-se estudar a cinética da proteína total, fibrinogênio e ceruloplasmina durante os primeiros cinco meses de vida, em cordeiros saudáveis da raça Santa Inês, no município de São Gonçalo dos Campos, Bahia, Brasil. Amostras de sangue foram colhidas de 22 animais, ao longo de onze momentos: logo após o parto (T0), 12 (T1), 24 (T2), 48 horas (T3), sete (T4), 15 (T5), 30 (T6), 60 (T7), 90 (T8), 120 (T9) e 150 dias de vida (T10). A proteína total e o fibrinogênio plasmáticos foram analisados por meio de refratômetro clínico e pela técnica de desnaturação pelo calor, respectivamente, enquanto que a determinação da ceruloplasmina sérica se baseou em sua atividade oxidásica. Para análise estatística utilizou-se o programa SPSS versão 18; os dados com distribuição não paramétrica foram submetidos ao teste de Friedman para avaliar o efeito do tempo, enquanto que as comparações múltiplas pelo teste de Wilcoxon permitiram a identificação das diferenças entre os momentos, adotando-se nível de significância de 5% (p<0,05). A proteína total apresentou o menor valor no T0 diferindo estatisticamente dos demais tempos, com pico às 12 horas (T1), porém estabilizando-se até o final do experimento. O fibrinogênio não apresentou diferença estatística entre os tempos. De T1 (12h) a T3 (48h) constatou-se baixos valores de ceruloplasmina, muito embora às 24 horas (T2) tenha diferido estatisticamente (p<0,05), em relação ao T0. A partir do sétimo dia (T4) a concentração desta proteína aumentou significativamente, atingindo pico nos tempos T8 (90 dias) e T9 (120 dias). Foi possível estabelecer a cinética das proteínas estudadas, identificar os principais momentos com alterações e sugerir os fatores associados com as mudanças observadas.(AU)


The objective was to study the kinetics of the total protein, fibrinogen, and ceruloplasmin during the first five months of life in healthy lambs Santa Inês, in São Gonçalo dos Campos, Bahia, Brazil. Blood samples were collected from 22 animals, over eleven times: immediately after birth (T0), 12 (T1), 24 (T2), 48 hours (T3), seven (T4), 15 (T5), 30 (T6), 60 (T7), 90 (T8) 120 (T9), and 150 days of age (T10). The total protein and plasma fibrinogen were analyzed by means of a clinical refractometer and the heat denaturation technique, respectively, while the determination of serum ceruloplasmin was based on its oxidase activity. For statistical analysis, the SPSS version 18 program was used; the non-parametric data were submitted to the Friedman test to evaluate the effect of time, whereas the multiple comparisons by the Wilcoxon test allowed the identification of the differences between the moments, adopting a significance level of 5% (P < 0.05). The total protein presented the lowest value at T0 differing statistically from the other times, with a peak at 12 hours (T1), but stabilizing until the end of the experiment. Fibrinogen is not able to differentiate between the times. Between T1 (12h) and T3 (48h), low values of ceruloplasmin were observed, although at 24 hours (T2) it differed statistically (p <0.05) in relation to T0. On the seventh day (T4) the concentration of this protein increased significantly, reaching a peak at T8 (90 days) and T9 (120 days). It was possible to establish the kinetics of the proteins studied, to identify the main moments with alterations and to suggest the factors associated with the observed changes.(AU)


Assuntos
Animais , Ovinos , Reação de Fase Aguda , Animais Recém-Nascidos/crescimento & desenvolvimento , Sangue
8.
Acta sci. vet. (Impr.) ; 46: 1-8, 2018. graf
Artigo em Inglês | VETINDEX | ID: biblio-1457822

Resumo

Background: Physiological events occur in the transition period marked by negative energetic balance, where the energetic demand is higher due to fetal nutrition and lactogenesis and intensified by the decrease of the dry matter intake in the pre-partum period. The adaptation of cows is dependent of homeostatic and homeorhetic mechanisms regulated by catecholamine, cortisol, GH, IGF-I, insulin and glucagon but the priorization of homeorhetic mechanisms could result in metabolic diseases. Considering the scarce longitudinal studies about the Brazilian conditions the aim of this project was to evaluate the influence of transition period on metabolic indicators, cortisol and IGF-I in Holstein cows.Materials, Methods & Results: Thirteen cows, from 2nd to 4th lactation were evaluated weakly from week -2 to week +3 in relation to calving to determine the body condition score (BCS), metabolic and endocrine profile. The BCS decreased between week -2 (BCS = 4.0) and +1 (BCS = 3.0), followed by and slight increase on weeks +2 and +3 (P = 0.000). The most of metabolic indicators and hormones have changed during the transition period (P ≤ 0.05), especially around calving. It was possible to detect the peak of cortisol, glucose, non-esterified fatty acids (NEFA), ß-hydroxibutyrate (BHB), and aspartate aminotransferase (AST) on delivery and week +1. On the other hand, total calcium, triglycerides (TG) and cholesterol (CHOL) decreased was observed around parturition. Insulin like growth factor type I (IGF-I) showed marked reduction between pre and postpartum, and the lowest value was observed in the week +1. TP and GLOB had the lowest value on calving and globulin has a gradual increase from delivery to week +3.[...]


Assuntos
Feminino , Animais , Adulto , Composição Corporal , Doenças Metabólicas/sangue , Doenças Metabólicas/veterinária , Fator de Crescimento Insulin-Like I/metabolismo , Hidrocortisona/metabolismo , /metabolismo , Ácidos Graxos não Esterificados/metabolismo , Bem-Estar do Animal , Brasil , Estudos Longitudinais
9.
Acta sci. vet. (Online) ; 46: 1-8, 2018. graf
Artigo em Inglês | VETINDEX | ID: vti-18380

Resumo

Background: Physiological events occur in the transition period marked by negative energetic balance, where the energetic demand is higher due to fetal nutrition and lactogenesis and intensified by the decrease of the dry matter intake in the pre-partum period. The adaptation of cows is dependent of homeostatic and homeorhetic mechanisms regulated by catecholamine, cortisol, GH, IGF-I, insulin and glucagon but the priorization of homeorhetic mechanisms could result in metabolic diseases. Considering the scarce longitudinal studies about the Brazilian conditions the aim of this project was to evaluate the influence of transition period on metabolic indicators, cortisol and IGF-I in Holstein cows.Materials, Methods & Results: Thirteen cows, from 2nd to 4th lactation were evaluated weakly from week -2 to week +3 in relation to calving to determine the body condition score (BCS), metabolic and endocrine profile. The BCS decreased between week -2 (BCS = 4.0) and +1 (BCS = 3.0), followed by and slight increase on weeks +2 and +3 (P = 0.000). The most of metabolic indicators and hormones have changed during the transition period (P ≤ 0.05), especially around calving. It was possible to detect the peak of cortisol, glucose, non-esterified fatty acids (NEFA), ß-hydroxibutyrate (BHB), and aspartate aminotransferase (AST) on delivery and week +1. On the other hand, total calcium, triglycerides (TG) and cholesterol (CHOL) decreased was observed around parturition. Insulin like growth factor type I (IGF-I) showed marked reduction between pre and postpartum, and the lowest value was observed in the week +1. TP and GLOB had the lowest value on calving and globulin has a gradual increase from delivery to week +3.[...](AU)


Assuntos
Animais , Feminino , Adulto , Doenças Metabólicas/sangue , Doenças Metabólicas/veterinária , Composição Corporal , Fator de Crescimento Insulin-Like I/metabolismo , Hidrocortisona/metabolismo , Ácidos Graxos não Esterificados/metabolismo , Ácido 3-Hidroxibutírico/metabolismo , Estudos Longitudinais , Bem-Estar do Animal , Brasil
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA