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Estimation models of variance components for farrowing interval in swine
(Brazilian Archives of Biology and Technology, 2009-02-01) [Artigo]
Este trabalho teve como objetivo principal avaliar a importância da inclusão dos efeitos genético materno, comum de leitegada e de ambiente permanente no modelo de estimação de componentes de variância para a característica ...
Genetic parameters estimate for milk and mozzarella cheese yield, fat and protein percentage in dairy buffaloes in Brazil
(Italian Journal of Animal Science, 2007-01-01) [Artigo]
The aim of this study was analyze the (co)variance components and genetic and phenotypic relationships in the following traits: accumulated milk yield at 270 days (MY270,), observed until 305 days of lactation; accumulated ...
Milk fatty acid characterization and genetic parameter estimates for milk conjugated linoleic acid in buffaloes
(Journal of Dairy Research, 2011-05-01) [Artigo]
The objectives of this study were to analyse buffalo milk fat composition, to verify the activity of Delta (9)-desaturase enzyme in the mammary gland, as well as to estimate additive genetic variances for milk, fat and ...
Test-day milk yield as a selection criterion for dairy buffaloes (Bubalus bubalis Artiodactyla, Bovidae)
(Genetics and Molecular Biology, 2008-01-01) [Artigo]
Due to the great demand for buffalo milk by-products the interest in technical-scientific information about this species is increasing. Our objective was to propose selection criteria for milk yield in buffaloes based on ...
Genetic parameters for test-day yield of milk, fat and protein in buffaloes estimated by random regression models
(Journal of Dairy Research, 2012-08-01) [Artigo]
The test-day yields of milk, fat and protein were analysed from 1433 first lactations of buffaloes of the Murrah breed, daughters of 113 sires from 12 herds in the state of São Paulo, Brazil, born between 1985 and 2007. ...
Association of longevity with type traits, milk yield and udder health in Holstein cows
(Livestock Science, 2018-12-01) [Artigo]
Genetic associations were estimated between 305-day cumulative milk yield (MY305) and maximum somatic cell score (SCS) in the first lactation, stayability in the herd at 60 months of age (Stay60), and linear udder and feet ...
Effect of lactation length adjustment procedures on genetic parameter estimates for buffalo milk yield
(Genetics and Molecular Biology, 2011-01-01) [Artigo]
The objectives of this study were to estimate the genetic parameters for milk yield unadjusted and adjusted for days in milk and, subsequently, to assess the influence of adjusting for days in milk on sire rank. Complete ...
Componentes de variância para o período de gestação em bovinos de corte
(Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2005-12-01) [Artigo]
Estimaram-se os componentes de variância do período de gestação (PG) considerando-se o efeito direto do bezerro e os efeitos direto da vaca e aleatório do touro (pai do bezerro). Além dos efeitos aleatórios, os modelos ...
Genetic parameters for milk, fat and protein yields in Murrah buffaloes (Bubalus bubalis Artiodactyla, Bovidae)
(Genetics and Molecular Biology, 2010-01-01) [Artigo]
The 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 ...
Estimation of genetic parameters for milk yield in Murrah buffaloes by Bayesian inference
(Journal of Dairy Science, 2010-02-01) [Artigo]
Random regression models were used to estimate genetic parameters for test-day milk yield in Murrah buffaloes using Bayesian inference. Data comprised 17,935 test-day milk records from 1,433 buffaloes. Twelve models were ...