Buscar
Mostrando ítems 1-10 de 365
Genetic parameters for body weight in buffaloes (Bubalus bubalis) in Colombia using random regression models
(Elsevier B.V., 2013-12-01)
The objective of this research was to estimate (co) variance functions and genetic parameters for body weight in Colombian buffalo populations using random regression models with Legendre polynomials. Data consisted of ...
Genetic parameter estimation for pre- and post-weaning traits in Brahman cattle in Brazil
(Springer, 2014-10-01)
Beef cattle producers in Brazil use body weight traits as breeding program selection criteria due to their great economic importance. The objectives of this study were to evaluate different animal models, estimate genetic ...
Improving accuracy of direct and maternal genetic effects in genomic evaluations using pooled boar semen: a simulation study
(Oxford Univ Press Inc, 2019-08-01)
Pooling semen of multiple boars is commonly used in swine production systems. Compared with single boar systems, this technique changes family structure creating maternal half-sib families. The aim of this simulation study ...
Influence of data structure on the estimation of the additive genetic direct and maternal covariance for early growth traits in Nellore cattle
(Elsevier B.V., 2012-05-01)
The objective of the present study was to investigate the effect of data structure on estimated genetic parameters and predicted breeding values of direct and maternal genetic effects for weaning weight (WW) and weight ...
Influence of data structure on the estimation of the additive genetic direct and maternal covariance for early growth traits in Nellore cattle
(Elsevier B.V., 2012-05-01)
The objective of the present study was to investigate the effect of data structure on estimated genetic parameters and predicted breeding values of direct and maternal genetic effects for weaning weight (WW) and weight ...
Genetic parameters for pre-weaning traits in Braunvieh cattle
(FUNPEC-EDITORA, 2009)
The objective of this study was to estimate genetic parameters for pre-weaning traits of Braunvieh cattle raised under tropical conditions in Brazil. The weight and weight gain parameters were birth weight (BW, N = 9955), ...
Inclusion of cytoplasmic lineage effect and direct-maternal genetic covariance for genetic evaluation of growth traits in Nellore cattle
(Funpec-editora, 2016-01-01)
We evaluated the impact of cytoplasmic lineage effects (Lc) for growth traits on genetic evaluation, including the genetic covariance between direct and maternal effects (sigma(am)). Pedigree data from 496,190 Nellore ...
Efeito da inclusão da covariância genética direta-materna, na análise para estimar parâmetros genéticos e predizer valores genéticos para ganho de peso em bovinos de corte.
(Universidade Federal de Santa MariaBRZootecniaUFSMPrograma de Pós-Graduação em Zootecnia, 2005-03-31)
The present study has as objective to evaluate the effect of the inclusion in the model of analysis, the covariance between the additive genetic direct and maternal effects, on the estimation of genetic parameters for ...
Bayesian estimation in maternally ancestral animal models for weaning weight of beef cattle
(American Society Of Animal Science, 2011-12)
The Bayesian approach was implemented for fitting several maternally ancestral models for weaning weight data of Angus calves. The goal was to evaluate to what extent genetic evaluation models with additive grand maternal ...
Comparação de Diferentes Modelos para Avaliação Genética de Características de Desempenho Pós-desmama em Suínos
(2001-11-01)
The aim of this work was to evaluate different models in which the random effects of litter and maternal genetic (correlated or not with the direct additive genetic effect) were added in sequence to the direct additive ...