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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
20/09/2007 |
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Data da última atualização: |
20/09/2007 |
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Autoria: |
McMANUS, C.; PINTO, B.; LOUVANDINI, H.; PAIVA, S.; SILVA, A. V.; GARCIA, J. A.; SANTO, E. S.; MARTINS, R. F. S. |
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Título: |
Selection objectives for hair sheep in central Brazil. |
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Ano de publicação: |
2006 |
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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. |
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Idioma: |
Inglês |
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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. |
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Palavras-Chave: |
Brasil; Ovino lanado. |
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Thesagro: |
Melhoramento Genético Animal; Seleção. |
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Categoria do assunto: |
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Marc: |
LEADER 01686naa a2200253 a 4500
001 1533361
005 2007-09-20
008 2006 bl uuuu u00u1 u #d
100 1 $aMcMANUS, C.
245 $aSelection objectives for hair sheep in central Brazil.
260 $c2006
520 $aThree 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.
650 $aMelhoramento Genético Animal
650 $aSeleção
653 $aBrasil
653 $aOvino lanado
700 1 $aPINTO, B.
700 1 $aLOUVANDINI, H.
700 1 $aPAIVA, S.
700 1 $aSILVA, A. V.
700 1 $aGARCIA, J. A.
700 1 $aSANTO, E. S.
700 1 $aMARTINS, R. F. S.
773 $tIn: WORLD CONGRESS ON GENETICS APPLIED TO LIVESTOCK PRODUCTION, 8., 2006, Belo Horizonte, MG. Proceedings... Belo Horizonte: Instituto Prociência, 2006. 4 f. 1 CD-ROM.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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