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Mostrando ítems 11-20 de 2038
Variances of direct genetic effects, maternal genetic effects, and cytoplasmic inheritance effects for milk yield, fat yield, and fat percentage
(Amer Dairy Science Assoc-adsa, 1998-02-01)
Milk yield, fat yield, and fat percentage during the first three lactations were studied using New York Holsteins that were milked twice daily over a 305-d, mature equivalent lactation. Those data were used to estimate ...
Variances of direct genetic effects, maternal genetic effects, and cytoplasmic inheritance effects for milk yield, fat yield, and fat percentage
(Amer Dairy Science Assoc-adsa, 1998-02-01)
Milk yield, fat yield, and fat percentage during the first three lactations were studied using New York Holsteins that were milked twice daily over a 305-d, mature equivalent lactation. Those data were used to estimate ...
Genetic and environmental heterogeneity of residual variance of weight traits in Nellore beef cattle
(Biomed Central Ltd., 2012-06-06)
Background: Many studies have provided evidence of the existence of genetic heterogeneity of environmental variance, suggesting that it could be exploited to improve robustness and uniformity of livestock by selection. ...
Genetic and environmental heterogeneity of residual variance of weight traits in Nellore beef cattle
(Biomed Central Ltd., 2012-06-06)
Background: Many studies have provided evidence of the existence of genetic heterogeneity of environmental variance, suggesting that it could be exploited to improve robustness and uniformity of livestock by selection. ...
Estudo de simulação de modelos lineares mistos com distribuição normal contaminada no melhoramento genético animal
(Sociedade Brasileira de Zootecnia, 2007-10-01)
Objetivou-se com esse trabalho comparar estimativas de componentes de variâncias obtidas por meio de modelos lineares mistos Gaussianos e Robustos, via Amostrador de Gibbs, em dados simulados. Foram simulados 50 arquivos ...
Estudo de simulação de modelos lineares mistos com distribuição normal contaminada no melhoramento genético animal
(Sociedade Brasileira de Zootecnia, 2007-10-01)
Objetivou-se com esse trabalho comparar estimativas de componentes de variâncias obtidas por meio de modelos lineares mistos Gaussianos e Robustos, via Amostrador de Gibbs, em dados simulados. Foram simulados 50 arquivos ...
Estimation of genetic parameters in the square lattice analysis
(Bragantia, 2019)
Estimation of genetic parameters for growth traits in Tabapuã cattle using a multi-trait model
(Revista Brasileira de Zootecnia, 2017)