Test-day or 305-day milk yield for genetic evaluation of Gir cattle
dc.contributor.author | Pereira, Rodrigo Junqueira | |
dc.contributor.author | Ayres, Denise Rocha | |
dc.contributor.author | Santana Junior, Mario Luiz | |
dc.contributor.author | El Faro, Lenira | |
dc.contributor.author | Vercesi Filho, Anibal Eugenio | |
dc.contributor.author | Albuquerque, Lucia Galvao de [UNESP] | |
dc.contributor.institution | Universidade Federal de Mato Grosso do Sul (UFMS) | |
dc.contributor.institution | Agencia Paulista Tecnol Agronegocios | |
dc.contributor.institution | Universidade Estadual Paulista (Unesp) | |
dc.date.accessioned | 2019-10-06T01:40:47Z | |
dc.date.available | 2019-10-06T01:40:47Z | |
dc.date.issued | 2019-01-01 | |
dc.description.abstract | The objective of this work was to compare genetic evaluations of milk yield in the Gir breed, in terms of breeding values and their accuracy, using a random regression model applied to test-day records or the traditional model (TM) applied to estimates of 305-day milk yield, as well as to predict genetic trends for parameters of interest. A total of 10,576 first lactations, corresponding to 81,135 test-day (TD) records, were used. Rank correlations between the breeding values (EBVs) predicted with the two models were 0.96. The percentage of animals selected in common was 67 or 82%, respectively, when 1 or 5% of bulls were chosen, according to EBVs from random regression model (RRM) or TM genetic evaluations. Average gains in accuracy of 2.7, 3.0, and 2.6% were observed for all animals, cows with yield record, and bulls (sires of cows with yield record), respectively, when the RRM was used. The mean annual genetic gain for 305-day milk yield was 56 kg after 1993. However, lower increases in the average EBVs were observed for the second regression coefficient, related to persistency. The RRM applied to TD records is efficient for the genetic evaluation of milk yield in the Gir dairy breed. | en |
dc.description.affiliation | Univ Fed Mato Grosso, Inst Ciencias Agr & Tecnol, Campus Rondonopolis,Ave Estudantes 5-055, BR-78735901 Rondonopolis, MT, Brazil | |
dc.description.affiliation | Agencia Paulista Tecnol Agronegocios, Inst Zootecnia, Ctr Avancado Pesquisa Tecnol Agronegocio Bovino C, Rodovia Carlos Tonanni,Km 94,Caixa Postal 63, BR-14160900 Sertaozinho, SP, Brazil | |
dc.description.affiliation | Agencia Paulista Tecnol Agronegocios, Inst Zootecnia, Ave Heitor Penteado 56, BR-13460000 Nova Odessa, SP, Brazil | |
dc.description.affiliation | Univ Estadual Paulista Julio de Mesquite Filho, Fac Ciencias Agr & Vet, Campus Jaboticabal, BR-14884900 Jaboticabal, SP, Brazil | |
dc.description.affiliationUnesp | Univ Estadual Paulista Julio de Mesquite Filho, Fac Ciencias Agr & Vet, Campus Jaboticabal, BR-14884900 Jaboticabal, SP, Brazil | |
dc.format.extent | 9 | |
dc.identifier | http://dx.doi.org/10.1590/S1678-3921.pab2019.v54.00325 | |
dc.identifier.citation | Pesquisa Agropecuaria Brasileira. Brasilia Df: Empresa Brasil Pesq Agropec, v. 54, 9 p., 2019. | |
dc.identifier.doi | 10.1590/S1678-3921.pab2019.v54.00325 | |
dc.identifier.file | S0100-204X2019000104305.pdf | |
dc.identifier.issn | 0100-204X | |
dc.identifier.scielo | S0100-204X2019000104305 | |
dc.identifier.uri | http://hdl.handle.net/11449/186752 | |
dc.identifier.wos | WOS:000468773800001 | |
dc.language.iso | eng | |
dc.publisher | Empresa Brasil Pesq Agropec | |
dc.relation.ispartof | Pesquisa Agropecuaria Brasileira | |
dc.rights.accessRights | Acesso aberto | |
dc.source | Web of Science | |
dc.subject | accuracy | |
dc.subject | persistency | |
dc.subject | random regression | |
dc.subject | rank correlation | |
dc.title | Test-day or 305-day milk yield for genetic evaluation of Gir cattle | en |
dc.type | Artigo | |
dcterms.rightsHolder | Empresa Brasil Pesq Agropec | |
unesp.author.orcid | 0000-0002-1508-4097[4] | |
unesp.department | Zootecnia - FCAV | pt |
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