Avaliação genética de touros da raça Gir para produção de leite no dia do controle e em 305 dias de lactação

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dc.contributor.authorLedic, Ivan Luz
dc.contributor.authorDa Silva Verneque, Rui
dc.contributor.authorEl Faro, Lenira
dc.contributor.authorTonhati, Humberto [UNESP]
dc.contributor.authorMartinez, Mário Luiz
dc.contributor.authorDal Secco De Oliveira, Mauro [UNESP]
dc.contributor.authorCosta, Cláudio Nápolis
dc.contributor.authorTeodoro, Roberto Luiz
dc.contributor.authorDe Oliveira Fernandes, Leonardo
dc.contributor.institutionPesquisador da EPAMIG
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.contributor.institutionPesquisadora do IZ
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2022-04-29T08:47:12Z
dc.date.available2022-04-29T08:47:12Z
dc.date.issued2002-09-01
dc.description.abstractData from 32,779 monthly milk production, from 3,605 lactations until 305 days (PL305), from 2,082 Gir breed cows, sired by 281 bulls, calving from 1987 to 1999, in 11 herds, were utilized to verify the viability of using daily milk production control (PLDC) in sires genetic evaluation. Univariates analysis for PLDC1 to PLDC10 and P1305 were performed utilizing the restricted maximum likelihood method within an animal model, which included the three first lactations as replicate measures of the same dams unit. Animals were grouped according to the criterion of contemporaneous group of herd-year-season, and according to calving-age and to the interval calving-first control in PLDC1. The observed averages (kg) and the respective standard deviations for PLDC1 to PLDC10 and PL305 were: 11.97±4.64; 11.93±4.68; 10.98±4.40; 10.18±4.12; 9.66±3.88; 9.20±3.69; 8.63±3.51; 8.08±3.33; 7.59±3.27; 7.22±3.15 and 2,746.17± 1,299.90. Heritability estimates for PLDC1 to PLDC10 were: 0.26; 0.19; 0.18; 0.20; 0.15; 0.13; 0.14; 0.10; 0.11 e 0.10, respectively; for PL305 it was 0.18. Spearman correlations between predicted genetic values for 281 sires according to the analysis on PLDC vs PL305 were large, oscillating from 0.85 to 0.94. In selecting above 5% of the top sires for PL305, there was an overlapping of above 80% of the animals for PLDC. In some PLDC the coincidence level of the sires rank correlation with PL305 was very low.en
dc.description.affiliationPesquisador da EPAMIG, Caixa Postal 351, 38001-970, Uberaba, MG
dc.description.affiliationPesquisador da EMBRAPA Gado de Leite, R. Eugênio do Nascimento 610, 36038-330, Juiz de Fora, MG
dc.description.affiliationPesquisadora do IZ, Av. Bandeirantes 2419, 14001-970, Ribeirão Preto, SP
dc.description.affiliationFCAV/UNESP, Via Prof. P. Donato Castellane s/n, 14884-900, Jabotical, SP
dc.description.affiliationUnespFCAV/UNESP, Via Prof. P. Donato Castellane s/n, 14884-900, Jabotical, SP
dc.format.extent1964-1972
dc.identifier.citationRevista Brasileira de Zootecnia, v. 31, n. 5, p. 1964-1972, 2002.
dc.identifier.issn0100-4859
dc.identifier.scopus2-s2.0-0042387839
dc.identifier.urihttp://hdl.handle.net/11449/231719
dc.language.isopor
dc.relation.ispartofRevista Brasileira de Zootecnia
dc.sourceScopus
dc.subjectAnimal breeding
dc.subjectDairy cattle
dc.subjectMilking control
dc.subjectRank correlation
dc.titleAvaliação genética de touros da raça Gir para produção de leite no dia do controle e em 305 dias de lactaçãopt
dc.title.alternativeGenetic evaluation of Gir breed sires for milk production at the control day and 305 days of lactationen
dc.typeArtigo

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