Efeito do nível nutricional antes e após a ovulação sobre a taxa de gestação e a prolificidade em ovelhas Santa Inês

Saunders, G.; Alves, Nadja Gomes; Pérez, Juan Ramón Olalquiaga; Souza, José Camisão de; Moura, André Morais; Muniz, Joel Augusto; Lima, Renato Ribeiro de; Lazarin, G. B.

doi:10.1590/s0102-09352012000500001

Cited by 1 publication

(1 citation statement)

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“…Recently, Rodrigues et al (2011) found that the substitution of 50% cashew bagasse for elephant grass did not have any effect on estrus synchronization rates and pregnancy in sheep. Saunders et al (2012) also found that diets containing sources of protein of different ruminal degradability did not alter pregnancy rates in sheep.…”

Section: Resultsmentioning

confidence: 84%

Reproductive responses and productive characteristics in ewes supplemented with detoxified castor meal for a long period

Silva

Oliveira

et al. 2014

R. Bras. Zootec.

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-The objective of the present study was to evaluate the effects of supplementation with detoxified castor meal (DCM) in the diet of ewes during pregnancy, partum, and post-partum on the weight development of their offspring and at slaughter. The study included 56 ewes with synchronized estrus that were naturally mated. At the beginning of pregnancy and in post-partum, hepatic and renal function-related parameters and progesterone levels were measured. At slaughter, the proximate composition and fatty acid profile were determined in the loin of ewes. There was no effect of diet on reproductive response after estrus synchronization. At the beginning of pregnancy, albumin and creatinine levels were lower in the DCM group. Supplementation with DCM did not alter the weight or body condition of ewes at partum. However, at weaning, the DCM group showed a higher loin-eye area (LEA) in relation to the group fed diets without detoxified castor meal (WDCM). At partum, as well as at weaning, the offspring of the ewes supplemented with DCM had a larger LEA than the WDCM group. In post-partum, levels of glucose, urea, protein, and cholesterol were lower in the DCM group. The return to cyclicity was similar in both groups, with an average of 47 days after partum. At slaughter, neither anatomical and carcass components nor the results of the proximate analysis were affected by the type of diet, except for an increase in heptadecanoic acid in the DCM group. Supplementation with detoxified castor meal in the diet of ewes does not affect lambing, pregnancy, prolificacy, return to cyclicity, milk production, blood biochemical parameters, or carcass characteristics.

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Section: Resultsmentioning

confidence: 84%