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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
02/09/1998 |
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Data da última atualização: |
28/03/2017 |
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Autoria: |
AMER, P. R.; LOWMAN, B. G.; SIMM, G. |
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Título: |
Economic values for reproduction traits in beef suckler herds based on a calving distribution model. |
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Ano de publicação: |
1996 |
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Fonte/Imprenta: |
Livestock Production Science, v.46, n.2, p.85-96, 1996. |
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Idioma: |
Inglês |
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Conteúdo: |
Economic values for the genetic improvement of gestation lenght, post partum anostrus interval, conception rates at first or later post partum oestrus and calving day (relative to the first day of the calving season) in seasonal calving beef sucker hers were estimated. The approach used combines partial budgeting of the economic cost of a barren cow with a model of the herd calving distribution which is driven by assumed levels of reproductive parameters. Economic values for all traits were shown to be highly variable across farms and are also likely to vary across years. For an increase in gestation length and equivalently in post partum anostrus interval, estimates ofr economic values ranged between - 0.2 and - 2.77 L/day with higher values apparent in herds with a wide calving spread. Economic values for conception rates were higher at later (0.25 to 1.28 L per % increase) than at first (0.1 to 0.7 L per % increase) post partum oestruses. For calving day, economic values were approximately half of those derived using an alternative method from the literature which assumes calving day to be normally distributed. Implications for establishing selection criteria to choose terminal beef sires and suckler beef cows are discussed. |
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Palavras-Chave: |
Economic value; Valor economico. |
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Thesagro: |
Gado de Corte; Reprodução. |
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Thesaurus Nal: |
beef; reproduction. |
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Categoria do assunto: |
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Marc: |
LEADER 01851naa a2200217 a 4500
001 1792912
005 2017-03-28
008 1996 bl --- 0-- u #d
100 1 $aAMER, P. R.
245 $aEconomic values for reproduction traits in beef suckler herds based on a calving distribution model.
260 $c1996
520 $aEconomic values for the genetic improvement of gestation lenght, post partum anostrus interval, conception rates at first or later post partum oestrus and calving day (relative to the first day of the calving season) in seasonal calving beef sucker hers were estimated. The approach used combines partial budgeting of the economic cost of a barren cow with a model of the herd calving distribution which is driven by assumed levels of reproductive parameters. Economic values for all traits were shown to be highly variable across farms and are also likely to vary across years. For an increase in gestation length and equivalently in post partum anostrus interval, estimates ofr economic values ranged between - 0.2 and - 2.77 L/day with higher values apparent in herds with a wide calving spread. Economic values for conception rates were higher at later (0.25 to 1.28 L per % increase) than at first (0.1 to 0.7 L per % increase) post partum oestruses. For calving day, economic values were approximately half of those derived using an alternative method from the literature which assumes calving day to be normally distributed. Implications for establishing selection criteria to choose terminal beef sires and suckler beef cows are discussed.
650 $abeef
650 $areproduction
650 $aGado de Corte
650 $aReprodução
653 $aEconomic value
653 $aValor economico
700 1 $aLOWMAN, B. G.
700 1 $aSIMM, G.
773 $tLivestock Production Science$gv.46, n.2, p.85-96, 1996.
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Registro original: |
Embrapa Pantanal (CPAP) |
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| 1. |  | HICKEY, J. M.; CHIURUGWI, T.; MACKAY, I.; POWELL, W.; EGGEN, A.; KILIAN, A.; JONES, C.; CANALES, C.; GRATTAPAGLIA, D.; BASSI, F.; ATLIN, G.; GORJANC, G.; DAWSON, I.; RABBI, I.; RIBAUT, J.-M.; RUTKOSKI, J.; BENZIE, J.; LIGHTNER, J.; MWACHARO, J.; PARMENTIER, J.; ROBBINS, K.; SKOT, L.; WOLFE, M.; ROUARD, M.; CLARK, M.; AMER, P.; GARDINER, P.; HENDRE, P.; MRODE, R.; SIVASANKAR, S.; RASMUSSEN, S.; GROH, S.; JACKSON, V.; THOMAS, W.; BEYENE, Y. Genomic prediction unifies animal and plant breeding programs to form platforms for biological discovery. Nature Genetics, v. 49, p. 1297-1303, 2017.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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