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/Dec/2003
Cláudio Vieira de Araújo, Robledo de Almeida Torres, Francisco Palma Rennó, José Carlos Pereira, Carmen Silva Pereira, Simone Inoe Araújo, [...]
DOI: 10.1590/S1516-35982003000800010
Records of 4959 lactation in 1985 to 1998 of 2414 Brown Swiss cows breed, daughters of 70 sires in 51 herds, were used to estimate the genetic trend for milk and fat yield adjusted for 305 days of lactation and mature age of cows (PL305ME and PG305ME). The genetic trend for sires was estimated using a linear regression of the breeding values of the sires to their daughters calving year, averaged to number of daughters in each calving year. The […]
Keywords: Brown Swiss; fat and milk yield; genetic trend