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/Sep/1999
Antonio Ilson Gomes de Oliveira, Idalmo Garcia Pereira, Tarcísio de Moraes Gonçalves, José Vânio Araújo
DOI: 10.1590/S1516-35981999000500016
To evaluate the effect of previous days dry (PDD) and days open (DO) on milk (M305) and fat (F305) yield in 305 days and milk (MDAY) and fat (FDAY) yield per day of calving interval in Holstein cows, a data set contained 5,454 lactations from the Minas Gerais Holstein Cattle Breeders Association were analyzed. The model included effects of: nucleus (5), heard-year: nucleus, genetic group (1- 31/32 Holstein, 2- upgraded Holstein with known genealogy and 3- pure of origin Holstein), […]
Keywords: 305-days milk and fat yield; yield by day calving interval