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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
Data corrente: |
14/12/2006 |
Data da última atualização: |
15/03/2024 |
Autoria: |
ALBUQUERQUE, F. H. M. A. R. de; BORGES, I.; HENRY, M. R. J. M.; SILVA, T. P. G. da; MACEOO JÚNIOR, G. de L.; SILVA, A. G. M. e; CARMO, M. P. do; FERREIRA, M. I. C.; CORDEIRO, J. C. |
Título: |
Efeito do "flushing" e de cruzamentos sobre o desempenho produtivo e reprodutivo de ovelhas Santa Inês. |
Ano de publicação: |
2006 |
Fonte/Imprenta: |
In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 43., 2006, João Pessoa. Produção animal em biomas tropicais: anais. João Pessoa: Sociedade Brasileira de Zootecnia, 2006. 4 f.1 CD-ROM. |
Idioma: |
Português |
Palavras-Chave: |
Brasil; Minas Gerais; Prolificidade; Raça Santa Inês; Suplementação. |
Thesagro: |
Cordeiro; Fertilidade; Nutrição Animal; Ovino; Produtividade. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01067nam a2200313 a 4500 001 1532622 005 2024-03-15 008 2006 bl uuuu u00u1 u #d 100 1 $aALBUQUERQUE, F. H. M. A. R. de 245 $aEfeito do "flushing" e de cruzamentos sobre o desempenho produtivo e reprodutivo de ovelhas Santa Inês. 260 $aIn: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 43., 2006, João Pessoa. Produção animal em biomas tropicais: anais. João Pessoa: Sociedade Brasileira de Zootecnia, 2006. 4 f.1 CD-ROM.$c2006 650 $aCordeiro 650 $aFertilidade 650 $aNutrição Animal 650 $aOvino 650 $aProdutividade 653 $aBrasil 653 $aMinas Gerais 653 $aProlificidade 653 $aRaça Santa Inês 653 $aSuplementação 700 1 $aBORGES, I. 700 1 $aHENRY, M. R. J. M. 700 1 $aSILVA, T. P. G. da 700 1 $aMACEOO JÚNIOR, G. de L. 700 1 $aSILVA, A. G. M. e 700 1 $aCARMO, M. P. do 700 1 $aFERREIRA, M. I. C. 700 1 $aCORDEIRO, J. C.
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Embrapa Caprinos e Ovinos (CNPC) |
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Registro Completo
Biblioteca(s): |
Embrapa Gado de Leite. |
Data corrente: |
10/08/2021 |
Data da última atualização: |
10/08/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
SILVA, H. T.; LOPES, P. S.; CARVALHEIRA, J.; SILVA, D. A.; SILVA, A. A.; SILVA, F. F.; VERONEZE, R.; THOMPSON, G.; COSTA, C. N. |
Afiliação: |
HUGO TEIXEIRA SILVA, Universidade Federal de Viçosa; PAULO SÁVIO LOPES, Universidade Federal de Viçosa; JÚLIO CARVALHEIRA, Universidade do Porto; DELVAN ALVES SILVA, Universidade Federal de Viçosa; ALESSANDRA ALVES SILVA, Universidade Federal de Viçosa; FABYANO FONSECA SILVA, Universidade Federal de Viçosa; RENATA VERONEZE, Universidade Federal de Viçosa; GERTRUDE THOMPSON, Universidade do Porto; CLAUDIO NAPOLIS COSTA, CNPGL. |
Título: |
Autoregressive model for genetic evaluation of longitudinal reproductive traits in Brazilian Holstein cattle. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Reproduction in Domestic Animals, v. 56, n. 3, p. 391-399, 2021. |
Idioma: |
Inglês |
Conteúdo: |
Reproductive efficiency is major determinant of the dairy herd profitability. Thus, reproductive traits have been widely used as selection objectives in the current dairy cattle breeding programs. We aimed to evaluate strategies to model days open (DO), calving interval (CI) and daughter pregnancy rate (DPR) in Brazilian Holstein cattle. These reproductive traits were analysed by the autoregressive (AR) model and compared with classical repeatability (REP) model using 127,280, 173,092 and 127,280 phenotypic records, respectively. The first three calving orders of cows from 1,469 Holstein herds were used here. The AR model reported lower values for Akaike Information Criteria and Mean Square Errors, as well as larger model probabilities, for all evaluated traits. Similarly, larger additive genetic and lower residual variances were estimated from AR model. Heritability and repeatability estimates were similar for both models. Heritabilities for DO, CI and DPR were 0.04, 0.07 and 0.04; and 0.05, 0.06 and 0.04 for AR and REP models, respectively. Individual EBV reliabilities estimated from AR for DO, CI and DPR were, in average, 0.29, 0.30 and 0.29 units higher than those obtained from REP model. Rank correlation between EBVs obtained from AR and REP models considering the top 10 bulls ranged from 0.72 to 0.76; and increased from 0.98 to 0.99 for the top 100 bulls. The percentage of coincidence between selected bulls from both methods increased over the number of bulls included in the top groups. Overall, the results of model-fitting criteria, genetic parameters estimates and EBV predictions were favourable to the AR model, indicating that it may be applied for genetic evaluation of longitudinal reproductive traits in Brazilian Holstein cattle. MenosReproductive efficiency is major determinant of the dairy herd profitability. Thus, reproductive traits have been widely used as selection objectives in the current dairy cattle breeding programs. We aimed to evaluate strategies to model days open (DO), calving interval (CI) and daughter pregnancy rate (DPR) in Brazilian Holstein cattle. These reproductive traits were analysed by the autoregressive (AR) model and compared with classical repeatability (REP) model using 127,280, 173,092 and 127,280 phenotypic records, respectively. The first three calving orders of cows from 1,469 Holstein herds were used here. The AR model reported lower values for Akaike Information Criteria and Mean Square Errors, as well as larger model probabilities, for all evaluated traits. Similarly, larger additive genetic and lower residual variances were estimated from AR model. Heritability and repeatability estimates were similar for both models. Heritabilities for DO, CI and DPR were 0.04, 0.07 and 0.04; and 0.05, 0.06 and 0.04 for AR and REP models, respectively. Individual EBV reliabilities estimated from AR for DO, CI and DPR were, in average, 0.29, 0.30 and 0.29 units higher than those obtained from REP model. Rank correlation between EBVs obtained from AR and REP models considering the top 10 bulls ranged from 0.72 to 0.76; and increased from 0.98 to 0.99 for the top 100 bulls. The percentage of coincidence between selected bulls from both methods increased over the number of bulls included ... Mostrar Tudo |
Palavras-Chave: |
Avaliação genética; Cow fertility; Desempenho reprodutivo; Model evaluation. |
Thesagro: |
Bovino; Fertilidade; Gado Holandês; Reprodução Animal. |
Thesaurus NAL: |
Autocorrelation; Reproductive performance. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
Marc: |
LEADER 02755naa a2200337 a 4500 001 2133402 005 2021-08-10 008 2021 bl uuuu u00u1 u #d 100 1 $aSILVA, H. T. 245 $aAutoregressive model for genetic evaluation of longitudinal reproductive traits in Brazilian Holstein cattle.$h[electronic resource] 260 $c2021 520 $aReproductive efficiency is major determinant of the dairy herd profitability. Thus, reproductive traits have been widely used as selection objectives in the current dairy cattle breeding programs. We aimed to evaluate strategies to model days open (DO), calving interval (CI) and daughter pregnancy rate (DPR) in Brazilian Holstein cattle. These reproductive traits were analysed by the autoregressive (AR) model and compared with classical repeatability (REP) model using 127,280, 173,092 and 127,280 phenotypic records, respectively. The first three calving orders of cows from 1,469 Holstein herds were used here. The AR model reported lower values for Akaike Information Criteria and Mean Square Errors, as well as larger model probabilities, for all evaluated traits. Similarly, larger additive genetic and lower residual variances were estimated from AR model. Heritability and repeatability estimates were similar for both models. Heritabilities for DO, CI and DPR were 0.04, 0.07 and 0.04; and 0.05, 0.06 and 0.04 for AR and REP models, respectively. Individual EBV reliabilities estimated from AR for DO, CI and DPR were, in average, 0.29, 0.30 and 0.29 units higher than those obtained from REP model. Rank correlation between EBVs obtained from AR and REP models considering the top 10 bulls ranged from 0.72 to 0.76; and increased from 0.98 to 0.99 for the top 100 bulls. The percentage of coincidence between selected bulls from both methods increased over the number of bulls included in the top groups. Overall, the results of model-fitting criteria, genetic parameters estimates and EBV predictions were favourable to the AR model, indicating that it may be applied for genetic evaluation of longitudinal reproductive traits in Brazilian Holstein cattle. 650 $aAutocorrelation 650 $aReproductive performance 650 $aBovino 650 $aFertilidade 650 $aGado Holandês 650 $aReprodução Animal 653 $aAvaliação genética 653 $aCow fertility 653 $aDesempenho reprodutivo 653 $aModel evaluation 700 1 $aLOPES, P. S. 700 1 $aCARVALHEIRA, J. 700 1 $aSILVA, D. A. 700 1 $aSILVA, A. A. 700 1 $aSILVA, F. F. 700 1 $aVERONEZE, R. 700 1 $aTHOMPSON, G. 700 1 $aCOSTA, C. N. 773 $tReproduction in Domestic Animals$gv. 56, n. 3, p. 391-399, 2021.
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