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| Moraes, Andreia Barros de; Poli, Cesar Henrique Espírito Candal; Fischer, Vivian; Fajardo, Neuza Maria; Aita, Marta Farias; Porciuncula, Gabriela Caillava da. |
| Mortality of perinatal lambs and low weight at weaning cause huge liabilities to farmers. Current study describes maternal-filial behavior and evaluates the use of maternal behavior score (MBS) to estimate the behavior of ewes and lambs soon after birth, and correlate it with lamb mortality and performance during lactation. Thirty-seven Corriedale ewes were used in a completely randomized design. MBS was assessed up to 24 hours after birth, taking into consideration the distance of the ewe from the lamb at the approach of a person. Maternal behavior, placental weight, weight gain of the lambs until weaning and their survival rate were also evaluated until two hours after lambing. More than 90% of the ewes had adequate maternal behavior, with parental care,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lambing; Reactivity; Survival; Weaning.. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/29923 |
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| Salinas-Rios,T.; Ramírez-Godínez,J.A.; Rodríguez-Almeida,F.A.; Hernández-Bautista,J.; Torres-Salado,N.; Herrera-Pérez,J.. |
| ABSTRACT Profitability of sheep production depends on the reproductive response of ewes and growth of their lambs, which can be improved through the ram genotype. The aim of this study was to evaluate the reproductive response of Blackbelly (Bb), Pelibuey (Pb), Katahdin (Kat) and Dorper (Dor) ewes crossed with Damara (Dam) and Dor rams and the growth of their offspring. To measure percentage of single and multiple lambings (MLP), 234 Bb, Pb, Kat and Dor ewes were used. To measure lamb growth, the offspring of 86 Bb x Pb (BbPb) ewes and 73 Kat x Dor (KatDOR) ewes were used. Four Dor x BbPb, six Dam x BbPb and six Dam x KatDor lambs were slaughtered for carcass assessment. MLP was analyzed with the CATMOD procedure considering the factors age and breed. Lamb... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lambs; Breeding; Weaning; Ewes; Lambing. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200429 |
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