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.
01/May/1999
Mario Luiz Martinez, Rui da Silva Verneque, Roberto Luiz Teodoro, Amaury Alipio Pimentel, William José Ferreira
DOI: 10.1590/S1516-35981999000300009
Milk production data of 19,151 lactations from 8,984 cows, daughters of 795 Gyr sires were used to genetically evaluate cows. Mixed model equation was used to predict sire-breeding values that were incorporated in the selection index of the cows. Besides the selection index, animal models were also used to predict the genetic value of the cows, using only the first lactation or up to five lactations per cow. The accuracies of the predictions obtained by cows breeding values, using the […]
Keywords: accuracy; correlation; cow evaluation; methodology