Bênnio Alexandre de Assis Marques

Caroço de algodão na dieta de cabras saanen no semiárido paraibano

The present work aimed to evaluate the effects of the feed supplementation with different levels of cotton-seeds on milk production and the effect of environment on the physiological responses of Saanen goats in semiarid of Paraiba. Sixteen goats were used with average weight of 55kg ± 1,41kg. For milk production analysis, it was used a latin square design 4x4 (4 animals and 4 periods of 15 days) with four treatments and for the environmental and physiological parameters it was used a completely randomized design with two treatments (morning and afternoon) and 16 repetitions. In the analysis of milk production the treatments consisted in the inclusion of 4 levels of cotton seeds in the diet (0; 3; 6 and 9%), in the evaluation of environmental parameters and physiological treatments consisted of two shifts (morning and afternoon). Evaluated the environmental parameters air temperature, relative humidity, black globe temperature and physiological: respiratory rate, rectal temperature and surface temperature. In the environmental and physiological parameters was observed that there was effect of shifts (P < 0.05) with elevation ambient temperature and respiratory rate, rectal temperature and surface temperature. Regression analysis, we determined that there was no correlation between levels of cottonseed and average daily production of milk, so it is possible to conclude that the cotton seeds can be administrate as complement in the diet of goats in lactation and saanen goats, although they maintained homeothermy with increased respiratory rate, proved susceptible to the semi-arid climate.

Avaliação dos níveis de concentrado e gordura protegida sobre o desempenho produtivo e termorregulação de ovinos

Objetivou-se verificar o efeito da suplementacao energetica atraves da inclusao de gordura protegida e do nivel de concentrado da dieta sobre o desempenho e termorregulacao de ovinos Santa Ines criados em sistema intensivo no semiarido paraibano. Foram utilizados 30 cordeiros machos inteiros da raca Santa Ines, distribuidos em esquema fatorial 3 x 2 (3 niveis de concentrado (40, 50 e 60%) e 2 niveis de gordura protegida (0 e 2%) na dieta) em um delineamento de blocos ao acaso com 5 repeticoes. Observou-se efeito linear positivo dos niveis de concentrado sobre o desempenho produtivo dos animais. A suplementacao energetica com gordura protegida (2%), nao influenciou o desempenho produtivo dos animais (P>0,05), no entanto, houve interacao do nivel de concentrado x gordura protegida para temperatura retal e frequencia respiratoria. O nivel de 60% de concentrado na dieta de ovinos em confinamento promoveu melhor desempenho produtivo. O nivel de concentrado na dieta afetou diretamente as respostas fisiologicas dos ovinos, no entanto a utilizacao de 2% de gordura protegida na dieta quando associado ao nivel de 40% de concentrado amenizou os efeitos do estresse calorico sobre esses animais.