Genetic parameters for milk, fat and protein yields in Murrah buffaloes (Bubalus bubalis Artiodactyla, Bovidae)

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dc.contributor.authorAspilcueta-Borquis, Rusbel Raúl
dc.contributor.authorSesana, Roberta Cristina
dc.contributor.authorBerrocal, Milthon Honorio Munoz
dc.contributor.authorSeno, Leonardo de Oliveira
dc.contributor.authorBignardi, Annaiza Braga
dc.contributor.authorEl Faro, Lenira
dc.contributor.authorAlbuquerque, Lucia Galvão de
dc.contributor.authorCamargo, Gregório Miguel Ferreira de
dc.contributor.authorTonhati, Humberto
dc.date.accessioned2024-05-20T18:41:51Z
dc.date.available2024-05-20T18:41:51Z
dc.date.issued2010
dc.description.abstractThe objective of the present study was to estimate genetic parameters for test-day milk, fat and protein yields and 305-day-yields in Murrah buffaloes. 4,757 complete lactations of Murrah buffaloes were analyzed. Co-variance components were estimated by the restricted maximum likelihood method. The models included additive direct genetic and permanent environmental effects as random effects, and the fixed effects of contemporary group, milking number and age of the cow at calving as linear and quadratic covariables. Contemporary groups were defined by herd-year-month of test for test-day yields and by herd-year-season of calving for 305-day yields. The heritability estimates obtained by two-trait analysis ranged from 0.15 to 0.24 for milk, 0.16 to 0.23 for protein and 0.13 to 0.22 for fat, yields. Genetic and phenotypic correlations were all positive. The observed population additive genetic variation indicated that selection might be an effective tool in changing population means in milk, fat and protein yields.
dc.identifier.issn1415-4757
dc.identifier.otherS1415-47572010000100014-scl
dc.identifier.urihttps://repositorio-aptaregional.agricultura.sp.gov.br/handle/123456789/2295
dc.relation.ispartofGenetics and Molecular Biology
dc.subjecttest-day model
dc.subjectaccumulated productions
dc.subjectheritability
dc.subjectgenetic correlations
dc.titleGenetic parameters for milk, fat and protein yields in Murrah buffaloes (Bubalus bubalis Artiodactyla, Bovidae)
dc.typeArtigos
oaire.citation.endPage77
oaire.citation.issue1
oaire.citation.startPage71
oaire.citation.volume33

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