Data/hora: 25/06/2024 05:54:31

Biblioteca(s): | Embrapa Caprinos e Ovinos.
Data corrente: | 20/09/2007
Data da última atualização: | 20/09/2007
Autoria: | McMANUS, C.; PINTO, B.; LOUVANDINI, H.; PAIVA, S.; SILVA, A. V.; GARCIA, J. A.; SANTO, E. S.; MARTINS, R. F. S.
Título: | Selection objectives for hair sheep in central Brazil.
Ano de publicação: | 2006
Fonte/Imprenta: | In: WORLD CONGRESS ON GENETICS APPLIED TO LIVESTOCK PRODUCTION, 8., 2006, Belo Horizonte, MG. Proceedings... Belo Horizonte: Instituto Prociência, 2006. 4 f. 1 CD-ROM.
Idioma: | Inglês
Conteúdo: | Three production based systems (A, B and C) for sheep were studied to determine economic weights of important traits. Receipts and costs were simulated using an economic simulator to calculate the structure of the Operational Costs. Only characteristics that were responsible for more than 10% of the profit were studied, which included: number of weaned lambs, food consumption (ewe and lamb), weight of carcass and weight of female lambs sold for reproduction. Independent of the index used (profitability or yield) or system (A, B or C), the economic weights are larger for the number of lambs weaned per ewe. The better the system (A to C) the lesser the importance of this trait and lamb growth increased and weight of female for slaughter decreased in importance. Changes in herd structure had little influence on economic values, whereas (co)variances were important sources of change in selection indices.
Palavras-Chave: | Brasil; Ovino lanado.
Thesagro: | Melhoramento Genético Animal; Seleção.
Categoria do assunto: | --
Registro original: | Embrapa Caprinos e Ovinos (CNPC)
Exemplares: | CNPC - (20309-1) - ADD - PL - -- - CD0171 -  -  - DIS