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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
15/04/2016 |
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Data da última atualização: |
10/08/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PADILHA, A. H.; COBUCI, J.; COSTA, C. N.; BRACCINI NETO, J. |
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Afiliação: |
CLAUDIO NAPOLIS COSTA, CNPGL. |
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Título: |
Random regression models are suitable to substitute the traditional 305-day lactation model in genetic evaluations of holstein cattle in Brazil. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Asian-Australasian Jounal of Animal Science, v. 29, n. 6, p. 759-767, 2015. |
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Páginas: |
9 p. |
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DOI: |
https://doi.org/10.5713/ajas.15.0498 |
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Idioma: |
Inglês |
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Conteúdo: |
The aim of this study was to compare two random regression models (RRM) fitted by fourth (RRM4) and fifth-order Legendre polynomials (RRM5) with a lactation model (LM) for evaluating Holstein cattle in Brazil. Two datasets with the same animals were prepared for this study. To apply test-day RRM and LMs, 262,426 test day records and 30,228 lactation records covering 305 days were prepared, respectively. The lowest values of Akaike?s information criterion, Bayesian information criterion, and estimates of the maximum of the likelihood function (?2LogL) were for RRM4. Heritability for 305-day milk yield (305MY) was 0.23 (RRM4), 0.24 (RRM5), and 0.21 (LM). Heritability, additive genetic and permanent environmental variances of test days on days in milk was from 0.16 to 0.27, from 3.76 to 6.88 and from 11.12 to 20.21, respectively. Additive genetic correlations between test days ranged from 0.20 to 0.99. Permanent environmental correlations between test days were between 0.07 and 0.99. Standard deviations of average estimated breeding values (EBVs) for 305MY from RRM4 and RRM5 were from 11% to 30% higher for bulls and around 28% higher for cows than that in LM. Rank correlations between RRM EBVs and LM EBVs were between 0.86 to 0.96 for bulls and 0.80 to 0.87 for cows. Average percentage of gain in reliability of EBVs for 305-day yield increased from 4% to 17% for bulls and from 23% to 24% for cows when reliability of EBVs from RRM models was compared to those from LM model. Random regression model fitted by fourth order Legendre polynomials is recommended for genetic evaluations of Brazilian Holstein cattle because of the higher reliability in the estimation of breeding values. MenosThe aim of this study was to compare two random regression models (RRM) fitted by fourth (RRM4) and fifth-order Legendre polynomials (RRM5) with a lactation model (LM) for evaluating Holstein cattle in Brazil. Two datasets with the same animals were prepared for this study. To apply test-day RRM and LMs, 262,426 test day records and 30,228 lactation records covering 305 days were prepared, respectively. The lowest values of Akaike?s information criterion, Bayesian information criterion, and estimates of the maximum of the likelihood function (?2LogL) were for RRM4. Heritability for 305-day milk yield (305MY) was 0.23 (RRM4), 0.24 (RRM5), and 0.21 (LM). Heritability, additive genetic and permanent environmental variances of test days on days in milk was from 0.16 to 0.27, from 3.76 to 6.88 and from 11.12 to 20.21, respectively. Additive genetic correlations between test days ranged from 0.20 to 0.99. Permanent environmental correlations between test days were between 0.07 and 0.99. Standard deviations of average estimated breeding values (EBVs) for 305MY from RRM4 and RRM5 were from 11% to 30% higher for bulls and around 28% higher for cows than that in LM. Rank correlations between RRM EBVs and LM EBVs were between 0.86 to 0.96 for bulls and 0.80 to 0.87 for cows. Average percentage of gain in reliability of EBVs for 305-day yield increased from 4% to 17% for bulls and from 23% to 24% for cows when reliability of EBVs from RRM models was compared to those from LM model. Rand... Mostrar Tudo |
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Palavras-Chave: |
305-Day Milk Yield; Brazilian Holstein; Breeding Values; Legendre Polynomials. |
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Thesaurus Nal: |
reliability. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1043453/1/Random-regression-models-are-suitable-to-substitute-the-traditional-305-day-lactation.pdf
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Marc: |
LEADER 02505naa a2200241 a 4500
001 2043453
005 2022-08-10
008 2015 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.5713/ajas.15.0498$2DOI
100 1 $aPADILHA, A. H.
245 $aRandom regression models are suitable to substitute the traditional 305-day lactation model in genetic evaluations of holstein cattle in Brazil.$h[electronic resource]
260 $c2015
300 $a9 p.
520 $aThe aim of this study was to compare two random regression models (RRM) fitted by fourth (RRM4) and fifth-order Legendre polynomials (RRM5) with a lactation model (LM) for evaluating Holstein cattle in Brazil. Two datasets with the same animals were prepared for this study. To apply test-day RRM and LMs, 262,426 test day records and 30,228 lactation records covering 305 days were prepared, respectively. The lowest values of Akaike?s information criterion, Bayesian information criterion, and estimates of the maximum of the likelihood function (?2LogL) were for RRM4. Heritability for 305-day milk yield (305MY) was 0.23 (RRM4), 0.24 (RRM5), and 0.21 (LM). Heritability, additive genetic and permanent environmental variances of test days on days in milk was from 0.16 to 0.27, from 3.76 to 6.88 and from 11.12 to 20.21, respectively. Additive genetic correlations between test days ranged from 0.20 to 0.99. Permanent environmental correlations between test days were between 0.07 and 0.99. Standard deviations of average estimated breeding values (EBVs) for 305MY from RRM4 and RRM5 were from 11% to 30% higher for bulls and around 28% higher for cows than that in LM. Rank correlations between RRM EBVs and LM EBVs were between 0.86 to 0.96 for bulls and 0.80 to 0.87 for cows. Average percentage of gain in reliability of EBVs for 305-day yield increased from 4% to 17% for bulls and from 23% to 24% for cows when reliability of EBVs from RRM models was compared to those from LM model. Random regression model fitted by fourth order Legendre polynomials is recommended for genetic evaluations of Brazilian Holstein cattle because of the higher reliability in the estimation of breeding values.
650 $areliability
653 $a305-Day Milk Yield
653 $aBrazilian Holstein
653 $aBreeding Values
653 $aLegendre Polynomials
700 1 $aCOBUCI, J.
700 1 $aCOSTA, C. N.
700 1 $aBRACCINI NETO, J.
773 $tAsian-Australasian Jounal of Animal Science$gv. 29, n. 6, p. 759-767, 2015.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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| Registros recuperados : 55 | |
| 4. |  | ACOSTA, T. F.; EICHOLZ, M; UENO, B.; EICHOLZ, E. Estudos de época de semeadura e arranjos de plantas de mamona. In: ENCONTRO LATINO-AMERICANO DE INICIAÇÃO CIENTÍFICA, 19.; ENCONTRO LATINO AMERICANO DE PÓS GRADUAÇÃO, 15.; ENCONTRO LATINO AMERICANO DE INICIAÇÃO CIENTIFÍCA JÚNIOR, 9.; ENCONTRO NACIONAL DE INICIAÇÃO À DOCÊNCIA, 5., 2015, São José dos Campos. Ciência, luz e tecnologia. São José dos Campos: UNIVAP, 2015. Disponível online: www.inicepg.univap.br/cd/INIC_2015/index.html| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Clima Temperado. |
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| 9. | | SCHEER, G. R.; POHLMANN, V.; EICHOLZ, M. D.; FRANZ, E. V.; EICHOLZ, E. D. Avaliação da brotação dos genótipos de batata para utilização em sistema de produção orgânica. In: SEMANA INTEGRADA UFPEL, 9.; CONGRESSO DE INICIAÇÃO CIENTÍFICA, 32., 2023, Pelotas. Anais [eletrônicos...]. Pelotas: UFPEL, 2023.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Clima Temperado. |
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| 10. | | ROMMEL, R.; SEITER, R.; TATTO, F. R.; EICHOLZ, M.; EICHOLZ, E. D. Arranjo de plantas para cultivar BRS energia. In: SIMPÓSIO ESTADUAL DE AGROENERGIA; REUNIÃO TÉCNICA DE AGROENERGIA - RS, 5.; ENCONTRO DE ENERGIAS RENOVÁVEIS NA AGRICULTURA FAMILIAR, 2., Pelotas, 2014. Anais... Pelotas: Embrapa Clima Temperado, 2014. 1 pen card.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Clima Temperado. |
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| 11. | | EICHOLZ, M. D.; SILVA, S. D. dos A. e; EICHOLZ, E. D.; FONSECA, E. R. Avaliação das fases de crescimento de frutos de tungue. In: CONGRESSO BRASILEIRO DE MAMONA, 6.; SIMPÓSIO INTERNACIONAL DE OLEAGINOSAS ENERGÉTICAS, 3., 2014, Fortaleza. Energia e segurança alimentar na agricultura familiar: anais. Campina Grande, PB: Embrapa Algodão, 2014.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Clima Temperado. |
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| 12. | | EICHOLZ, M. D.; STÖHLIRCK, L.; LEMÕES, L.; FONSECA, E.; SILVA, S. D. dos A. e. Avaliação fenológica do tungue em Pelotas/RS safra 2010/2011. In: SIMPÓSIO ESTADUAL DE AGROENERGIA, 4.; REUNIÃO TÉCNICA DE AGROENERGIA, 4., 2012, AMRIGS: Porto Alegre. Anais... Pelotas: Embrapa Clima Temperado, 2012. Organizado por Sérgio Delmar dos Anjos e Silva Ivan Rodrigues de Almeida.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Clima Temperado. |
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| 14. | | EICHOLZ, E. D.; EICHOLZ, M.; FONSECA, E.; SILVA, S. D. dos A. e. Avaliação agronômica de variedades de milho no sul do RS. In: REUNIÃO TÉCNICA ANUAL DO MILHO, 58.; REUNIÃO TÉCNICA ANUAL DO SORGO, 41., 2013, Pelotas. Resumos... Brasília, DF: Embrapa, 2014.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Clima Temperado. |
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| 15. | | EICHOLZ, E. D.; SEITER, R.; TATTO, F. R.; EICHOLZ, M.; SILVA, S. D. dos A. e. Comportamento agronômico de genótipos de mamona em Pelotas, RS. In: SIMPÓSIO ESTADUAL DE AGROENERGIA; REUNIÃO TÉCNICA DE AGROENERGIA - RS, 5.; ENCONTRO DE ENERGIAS RENOVÁVEIS NA AGRICULTURA FAMILIAR, 2., Pelotas, 2014. Anais... Pelotas: Embrapa Clima Temperado, 2014. 1 pen card.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Clima Temperado. |
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| 20. | | EICHOLZ, E. D.; EICHOLZ, M. D.; SEITER, R.; FONSECA, E. R. Efeito de diferentes tipos de feijão em consórcio com mamona. In: CONGRESSO BRASILEIRO DE MAMONA, 6.; SIMPÓSIO INTERNACIONAL DE OLEAGINOSAS ENERGÉTICAS, 3., 2014, Fortaleza. Energia e segurança alimentar na agricultura familiar: anais. Campina Grande, PB: Embrapa Algodão, 2014. p. 153| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Clima Temperado. |
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| Registros recuperados : 55 | |
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