Buffalos milk yield analysis using random regression models

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Federal Rural da Amazônia-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidade Federal de Viçosa (UFV)-
Autor(es): dc.creatorde Araújo, C. V.-
Autor(es): dc.creatorAmorim Ramos, A. [UNESP]-
Autor(es): dc.creatorInoe Araújo, S.-
Autor(es): dc.creatorCeli Chaves, L.-
Autor(es): dc.creatorSchierholt, A. S.-
Data de aceite: dc.date.accessioned2022-08-04T22:03:21Z-
Data de disponibilização: dc.date.available2022-08-04T22:03:21Z-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2007-12-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.4081/ijas.2007.s2.279-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/219934-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/219934-
Descrição: dc.descriptionData comprising 1,719 milk yield records from 357 females (predominantly Murrah breed), daughters of 110 sires, with births from 1974 to 2004, obtained from the Programa de Melhoramento Genético de Bubalinos (PROMEBUL) and from records of EMBRAPA Amazônia Oriental - EAO herd, located in Belém, Pará, Brazil, were used to compare random regression models for estimating variance components and predicting breeding values of the sires. The data were analyzed by different models using the Legendre's polynomial functions from second to fourth orders. The random regression models included the effects of herd-year, month of parity date of the control; regression coefficients for age of females (in order to describe the fixed part of the lactation curve) and random regression coefficients related to the direct genetic and permanent environment effects. The comparisons among the models were based on the Akaike Infromation Criterion. The random effects regression model using third order Legendre's polynomials with four classes of the environmental effect were the one that best described the additive genetic variation in milk yield. The heritability estimates varied from 0.08 to 0.40. The genetic correlation between milk yields in younger ages was close to the unit, but in older ages it was low.-
Descrição: dc.descriptionUniversidade Federal Rural da Amazônia, Belém - PR-
Descrição: dc.descriptionUniversidade Estadual Paulista - UNESP, Botucatu - SP-
Descrição: dc.descriptionUniversidade Federal de Viçosa, Viçosa -MG-
Descrição: dc.descriptionUniversidade Estadual Paulista - UNESP, Botucatu - SP-
Formato: dc.format279-282-
Idioma: dc.languageen-
Relação: dc.relationItalian Journal of Animal Science-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectGenetic evaluation-
Palavras-chave: dc.subjectMilk yield-
Palavras-chave: dc.subjectMurrah Breed-
Palavras-chave: dc.subjectRandom regression-
Título: dc.titleBuffalos milk yield analysis using random regression models-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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