| Journal: | Anais da Academia Brasileira de Ciencias |
| Database: | PERIÓDICA |
| System number: | 000436136 |
| ISSN: | 0001-3765 |
| Authors: | Freitas, Ana Carolina B1 Costa, Ricardo L.D2 Quirino, Celia R1 Bartholazzi-Junior, Aylton1 Vega, Wilder H.O1 Beltrame, Renato T3 Campos, Fábio P2 |
| Institutions: | 1Universidade Estadual do Norte Fluminense, Laboratorio de Reproducao e Melhoramento Genetico Animal, Campos dos Goytacazes, Rio de Janeiro. Brasil 2Instituto de Zootecnia, Centro de Pesquisa em Zootecnia Diversificada, Nova Odessa, Sao Paulo. Brasil 3Centro Universitario do Espirito Santo, Colatina, Espirito Santo. Brasil |
| Year: | 2020 |
| Volumen: | 92 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico, descriptivo |
| English abstract | The aim of this study was to analyze the effects of genetic group and sex on residual feed intake, performance, testicular size, carcass and morphometric traits in Santa Ines purebred and Dorper ´ Santa Ines crossbred lambs. A total of 32 lambs, with initial body weight of 18±3.7 kg were used. Analysis of variance, considering the interaction between sex and genetic group of all the traits were performed. Crossbred females (-0.018±0.06) and purebred males (-0.018±0.05) were more efficient (p<0.001) in residual feed intake than crossbred males (0.018±0.04) or purebred females (0.018±0.04). The most efficient animal in residual feed intake consumed 37.9% less feed (1.179 kg/day) than the least efficient animal (1.899 kg/day). Crossbred, when compared to purebred, showed higher values for body weight, average daily gain, testicle size, carcass traits; had greater muscle accumulation, were more compact and with more aptitude to beef. Purebred were taller, but with lower body length and thoracic perimeter than crossbred. Males had greater muscle accumulation, were more compact and with more aptitude to meat. Crossing of native (Santa Ines) with exotic breed (Dorper) is an alternative to align efficiency in feed use, testicular size, compactness, aptitude for meat and ability for muscle accumulation |
| Disciplines: | Medicina veterinaria y zootecnia |
| Keyword: | Ovinos y caprinos, Nutrición animal, Corderos, Eficiencia alimenticia, Santa Inés, Dorper x Santa Inés, Rendimiento de canal, Composición de la canal |
| Keyword: | Sheep and goats, Animal nutrition, Lambs, Feed efficiency, Santa Ines, Dorper x Santa Ines, Carcass yield, Carcass composition |
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