Efeito da tosquia na temperatura corpórea e outros parâmetros clínicos em ovinos

The aim of this study was to determine the variation of the temperature after shearing in sheep under dry and hot environment conditions and to compare the temperature changes with variation in cardiac and respiratory frequencies, ruminal movements and hydration status. Twenty Suffolk unshorn ewes were studied. Physical examination was performed in all animals three times a day at 7:00 AM, 1:00 PM and 7:00 PM, during 42 days (22 days before shearing and 20 days after shearing). The skin temperature was measured by infrared thermometer over several surfaces of the body. Data were submitted to analysis of variance, for comparisons between groups (shorn versus unshorn) at each time, and the significant difference was evaluated at level of P<0.05 by Tukey test. The respiratory frequency was statistically significant at all times. When air humidity was high, the respiratory frequencies were low. The thermal stress was clear in sheep of this study, reflecting marked changes in cardiac and respiratory frequencies and rectal temperature. The respiratory frequency was the parameter more reliable to establish a framework of thermal stress in the unshorn sheep, with values on average three times higher than those reported in the literature. The heart rate monitors the thermal variation of the environment and is also an indicator of heat stress. This variation shows the Suffolk breed is well adapted to hot climates. The correlation between the body surface temperatures with environment temperature and air humidity was negative, as explained by the effect of wool insulation, i.e. even with an increase in environment temperature and humidity, the body temperature tends to maintain a compensating balance. In the shorn animals, the correlation between skin temperature with environment temperature and air humidity showed that the skin temperature increases when the environment temperature increases. The increase in the environment temperature does not affect the body temperature of unshorn animals due the insulating effect of the wool. However, when environment temperature rises, the presence of the wool starts to affect the thermal comfort as the heat absorption is larger than the capacity of heat loss. In this study, the best thermal stress indicators were the respiratory frequency and rectal and skin temperatures. The temperatures of the skin measured at the perineum, axillae and inner thigh were considered the most reliable.

Effects on performance and carcass and meat quality attributes following immunocastration with the gonadotropin releasing factor vaccine bopriva or surgical castration of bos indicus bulls raised on pasture in brazil

Bos indicus bulls 20. months of age grazed on pasture in Minas Gerais, Brazil either received 2 doses of the GnRF vaccine Bopriva at d0 and d91 (group IC, n. =. 144) or were surgically castrated on d91 (group SC, n. =. 144). Slaughter on d280, was 27. weeks after castration. Adverse safety issues in 8% of group SC bulls following surgery contrasted with 0% in group IC bulls. At d105 testosterone levels were suppressed to similar levels in both groups. Importantly, group IC bulls had higher live weight, hot carcass weight, ADG (P<. 0.005) and dressing percentage (P<. 0.0001) compared to group SC animals. There were no negative effects on carcass or meat quality traits, thus immunocastration was concluded to offer a safe and effective method that provides production gains, and improves animal welfare in Bos indicus beef bulls without impacting meat and carcass quality. © 2013 Elsevier Ltd.

Comportamento de poedeiras criadas a diferentes densidades e tamanhos de grupo em ambiente enriquecido

The objective of this work was to determine the behavioral differences among laying hens reared at different densities and group sizes, in an enriched environment. Isa Brownlaying hens with ages from 30 to 32-week-old, in small-sized and deformed pens, were used. Hens were raised during 28 days in bays with shavings bedding, perch and nest. Two group sizes were evaluated (6 and 12 fowls) and at two rearing densities (774 and 1,440 cm2 by fowl) in a factorial arrangement with three replicates. In fifteen-minute video footages, it was recorded the frequency and the expression period for the following behavior were recorded: feather scratching, sand bath, wing beating, drinking water, pecking, head scratching, earth scratching, eating, perching, leg stretching, pursuing, sitting, and nest visiting. The treatments and the interaction between them had significant effects. The six-hen group increased the frequency of behavior types that indicate fowl frustration, regardless of density. The group size is the most important factor for hen well-being.

Processo de adaptação do macaco- aranha-de-testa-branca (Ateles marginatus) ao cativeiro

Pós-graduação em Ciência Animal - FMVA

Uso da morfina, xilazina e meloxicam para o controle da dor pós-operatória em cadelas submetidas à ovariosalpingohisterectomia

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Técnicas de ovariosalpingohisterectomia (OSH) em cadelas: revisão de literatura

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Efeitos genéticos e ambientais sobre o tempo de permanência em imobilidade tônica de perdizes (Rhynchotus rufescens)

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Manejo no pré-abate de bovinos: aspectos comportamentais e perdas econômicas por contusões

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Manejo pré-abate e bem-estar dos suínos em frigoríficos brasileiros

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Efeito da rampa isolante na insensibilização de frangos de corte e seus reflexos sobre o bem-estar e qualidade da carcaça

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Fatores associados à injúria muscular em bovinos abatidos e suas relações com enzimas séricas e qualidade da carcaça

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avaliação do estresse em cordeiros submetidos a quatro métodos de caudectomia: Lívia Carolina Tomazini Peres. -

Pós-graduação em Ciência Animal - FMVA

Efeitos do tempo de espera em currais de frigorífico no bem-estar e na qualidade da carne de bovinos

Pós-graduação em Zootecnia - FCAV

Impacto negativo da restrição alimentar sobre o bem-estar de cabritos alojados em gaiolas metabólicas

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Influências de métodos de abate no bem-estar e na qualidade da carne de bovinos

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)