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.
Cláudio Manoel Rodrigues de Melo, Tarcisio de Moraes Gonçalves, Mário Luiz Martinez, Rui da Silva Verneque, Antonio Ilson Gomes de Oliveira, Rilke Tadeu Fonseca de Freitas
01/Jun/2000
Cláudio Manoel Rodrigues de Melo, Tarcisio de Moraes Gonçalves, Mário Luiz Martinez, Rui da Silva Verneque, Antonio Ilson Gomes de Oliveira, Rilke Tadeu Fonseca de Freitas
DOI: 10.1590/S1516-35982000000300011
Records of 4595 lactations from 2254 cows, daughters of 145 sires and 1618 dams of the Gyr breed, assigned to 18 herds, with calving from 1980 to 1997 were used to study the viability of using production from projected partial lactations, on the evaluation of sires. From 91, 151, 211 or 241 days of lactation, 10, 30, 50 or 70% of the lactations were projected, for the duration of the observed lactation and at 305 days of lactation. The estimated […]
Keywords: animal model; correlation order and values; genetic evaluation; Gyr cattle; model animal; partial projected lactation; restricted maximum likelihood
01/Jun/2000
Cláudio Manoel Rodrigues de Melo, Tarcisio de Moraes Gonçalves, Mário Luiz Martinez, Rui da Silva Verneque, Antonio Ilson Gomes de Oliveira, Rilke Tadeu Fonseca de Freitas
DOI: 10.1590/S1516-35982000000300012
Records of 4595 lactations from 2254 cows, daughters of 145 sires and 1,618 dams of the Gyr breed, assigned to 18 herds, with calving from 1980 to 1997 were used to study the viability of using production from projected partial lactations, on the evaluation. From 91, 151, 211 or 241 days of lactation, 10, 30, 50 or 70% of the lactations were projected, for the duration of the observed lactation and 305 days of lactation. The estimates of genetic parameters […]
Keywords: genetic evaluation; Gyr cattle; model animal; partial projected lactation; reliabilities; restricted maximum likelihood