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| 1. |  | FERREIRA, R. de P.; BASIGALUP, D. H.; GIECO, J. O.; SILVA, A. de C.; PEREIRA, A. V.; SEBASTIÁN ODORIZZI, A.; CRUZ, C. D.; VASCONCELOS, E. S. de; MANAMI, E. C.; FAVA, F. D.; BHERING, L. L.; WITTMANN, M. T. S.; KOPP, M. M.; DALL'AGNOL, M.; ESTELA RODRÍGUEZ, N.; FABIANA EROLES, S.; BUENO, V. H. P. (ed.). Genetic improvement of alfafa. Brasília, DF: Embrapa, 2015. 261 p.| Biblioteca(s): Embrapa Pecuária Sudeste. |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pantanal. Para informações adicionais entre em contato com cpap.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
21/05/2000 |
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Data da última atualização: |
31/03/2017 |
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Autoria: |
ABREU, U. G. P. de; MORAES, A. S.; SEIDL, A. F. |
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Afiliação: |
EMBRAPA Pantanal (Corumba, MS). Colorado State University (USA). |
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Título: |
Estimates of culling probability and expected productive life of brood cows in Pantanal of Mato Grosso (Brazil). |
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Ano de publicação: |
1999 |
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Fonte/Imprenta: |
In: SYMPOSIUM ON SYSTEMS APPROACHES FOR AGRICULTURAL DEVELOPMENT, 3., 1999, Lima. Abstracts... Lima: Participants Manual, 1999. nao paginado. |
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Idioma: |
Inglês |
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Conteúdo: |
A herd of 1,200 brood cows in the Brazilian Pantanal were monitored from 1994 to 1998 in order to analyse herd management and composition in terms of age and cull rate providing a more intensive monitoring strategy than traditionally is followed. The probability of culling was verified using a logit procedure. Time (order of monitoring session) and age of brood cow were significant in these estimates (P<0.01). The cull probabilities by age from 2 to 21 year, were: 1.02%, 1.26%, 1.56%, 1.92%, 2.37%, 32.56% and 37.41%, respectively. From these estimates the expected productive life of the cows was calculated (in years): 12.40, 11.53, 10.68, 9.73, 9.04, 8.26, 7.51, 6.80, 6.10, 5.45, 4.83, 4.26, 3.72, 3.22, 2.75, 2.32, 1.91, 1.51, 1.09 and 0.63, respectively, with an average brood cow age of 13.29 years. The cull rate was 7.5% per year, yielding a total replacement of the herd every 13.3 years. Estimated cull rates under traditional management is about 4.6% (27.8 years for total herd replacement). These data provide the basis to simulate different cull strategies as a function of existing herd strucure and interactions with management practices, environmental variables (floods) and the economic efficiency of the system. |
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Palavras-Chave: |
Bovine; Brood; Calculo; Cow; Culling; Probabilidade; Productive life; Vida produtiva. |
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Thesagro: |
Bovino; Seleção; Vaca. |
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Thesaurus NAL: |
Pantanal; probability. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02107naa a2200301 a 4500
001 1801258
005 2017-03-31
008 1999 bl --- 0-- u #d
100 1 $aABREU, U. G. P. de
245 $aEstimates of culling probability and expected productive life of brood cows in Pantanal of Mato Grosso (Brazil).
260 $c1999
520 $aA herd of 1,200 brood cows in the Brazilian Pantanal were monitored from 1994 to 1998 in order to analyse herd management and composition in terms of age and cull rate providing a more intensive monitoring strategy than traditionally is followed. The probability of culling was verified using a logit procedure. Time (order of monitoring session) and age of brood cow were significant in these estimates (P<0.01). The cull probabilities by age from 2 to 21 year, were: 1.02%, 1.26%, 1.56%, 1.92%, 2.37%, 32.56% and 37.41%, respectively. From these estimates the expected productive life of the cows was calculated (in years): 12.40, 11.53, 10.68, 9.73, 9.04, 8.26, 7.51, 6.80, 6.10, 5.45, 4.83, 4.26, 3.72, 3.22, 2.75, 2.32, 1.91, 1.51, 1.09 and 0.63, respectively, with an average brood cow age of 13.29 years. The cull rate was 7.5% per year, yielding a total replacement of the herd every 13.3 years. Estimated cull rates under traditional management is about 4.6% (27.8 years for total herd replacement). These data provide the basis to simulate different cull strategies as a function of existing herd strucure and interactions with management practices, environmental variables (floods) and the economic efficiency of the system.
650 $aPantanal
650 $aprobability
650 $aBovino
650 $aSeleção
650 $aVaca
653 $aBovine
653 $aBrood
653 $aCalculo
653 $aCow
653 $aCulling
653 $aProbabilidade
653 $aProductive life
653 $aVida produtiva
700 1 $aMORAES, A. S.
700 1 $aSEIDL, A. F.
773 $tIn: SYMPOSIUM ON SYSTEMS APPROACHES FOR AGRICULTURAL DEVELOPMENT, 3., 1999, Lima. Abstracts... Lima: Participants Manual, 1999. nao paginado.
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