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/Jul/2001
Marcos Vinícius Gualberto Barbosa da Silva, William José Ferreira, Jaime Araujo Cobuci, Guilherme Paes Guaragna, Paulo Rogério Palma de Oliveira
DOI: 10.1590/S1516-35982001000500016
Genealogies of 2070 animals and records from the first five lactations of 1406 cows of the Mantiqueira type cattle, daughters of 113 sires, were analyzed to estimate the frequency of inbred animals, the inbreeding average per generation and the possible effect of inbreeding increase on reproductive and productive traits. The evaluated traits were age at first calving (IPP), calving intervals (IDP), total milk production (PL) and lactation period (DL). Models for PL, IDP and DL included the fixed effects of […]
Keywords: animal model; dairy cattle; inbreeding; Mantiqueira type; REML methodology