The Revista Brasileira de Zootecnia (RBZ) is a publication dedicated to the broad field of Animal Science. We publish high-quality, original scientific research that spans across diverse areas within the discipline. The scope of RBZ encompasses a wide range of topics, including aquaculture, biometeorology and animal welfare, forage crops and grasslands, animal and forage plants breeding and genetics, animal reproduction, ruminant and non-ruminant nutrition, meat science and muscle biology, precision livestock, and animal production systems and agribusiness.
The Revista Brasileira de Zootecnia (RBZ) is a publication dedicated to the broad field of Animal Science. We publish high-quality, original scientific research that spans across diverse areas within the discipline. The scope of RBZ encompasses a wide range of topics, including aquaculture, biometeorology and animal welfare, forage crops and grasslands, animal and forage plants breeding and genetics, animal reproduction, ruminant and non-ruminant nutrition, meat science and muscle biology, precision livestock, and animal production systems and agribusiness.
The Revista Brasileira de Zootecnia (RBZ) is a publication dedicated to the broad field of Animal Science. We publish high-quality, original scientific research that spans across diverse areas within the discipline. The scope of RBZ encompasses a wide range of topics, including aquaculture, biometeorology and animal welfare, forage crops and grasslands, animal and forage plants breeding and genetics, animal reproduction, ruminant and non-ruminant nutrition, meat science and muscle biology, precision livestock, and animal production systems and agribusiness.
Luiz Felipe Waihrich Guterres, Paulo Roberto Nogara Rorato, Arione Augusti Boligon, Tomás Weber, Jader Silva Lopes, Paulo Rodrigo Santos de Souza
01/Dec/2006
Luiz Felipe Waihrich Guterres, Paulo Roberto Nogara Rorato, Arione Augusti Boligon, Tomás Weber, Jader Silva Lopes, Paulo Rodrigo Santos de Souza
DOI: 10.1590/S1516-35982006000800010
This study aimed to evaluate the effect of the inclusion of genetic direct-maternal covariance on genetic parameters estimates and on ranking of breeding values (VG) for average daily gain from birth to weaning age (GMDND) and from weaning to 550 days of age (GMDDS) using records from 11,202 and 4,665 Angus animals respectively. Covariance components were estimated by restricted maximum likelihood method and for GMDND the model included the additive genetic direct, maternal, permanent environmental and residual random effects and […]
Keywords: average daily gain; heritability; maternal effect; Spearman correlation
01/Apr/2004
Rodolpho de Almeida Torres Filho, Robledo de Almeida Torres, Paulo Sávio Lopes, Ricardo Frederico Euclydes, Cláudio Vieira de Araújo, Carmen Silva Pereira, [...]
DOI: 10.1590/S1516-35982004000200011
Large White data set with performance and reproductive traits for a development line were analyzed in order to verify the importance of including maternal and common litter effects in genetic evaluation models, using four different models: model 1 – direct genetic effect; model 2 – the direct and maternal genetic effects; model 3 – the direct and common litter effects; and the model 4 – the direct, maternal and common litter effects. The traits were analyzed by Restricted Maximum Likelihood […]
Keywords: common litter effect; likelihood ratio test; maternal genetic effect; Pearson correlation; Spearman correlation