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/Jun/2006
Giovani Noro, Félix Hilario Diaz González, Rómulo Campos, João Walter Dürr
DOI: 10.1590/S1516-35982006000400026
The effects of some environmental factors on milk yield and milk chemical composition and also on somatic cells count in dairy herds assisted by cooperatives (DHI) in Rio Grande do Sul, Brazil were investigated in this trial. Data were obtained from a 5-year period of dairy control program totalizing 165,311 observations and were used to investigate the effects of year and month of dairy control, age at calving, time of farm on dairy control and stage of lactation on milk […]
Keywords: environment; milk composition; somatic cells; southern Brazil
01/Apr/2006
Hélida Regina Magalhães, Lenira El Faro, Vera Lucia Cardoso, Claudia Cristina Paro de Paz, Laerte Dagher Cassoli, Paulo Fernando Machado
DOI: 10.1590/S1516-35982006000200011
Cumulative milk yield at 305 days (MY-305) and somatic cell count (SCC) from the first to the fifth lactation of Holstein cows were analyzed in this study. Somatic cell count was logarithmically transformed to somatic cell score (SCS) that was then included in the model not only as a dependent but also as an independent variable. Year, season, and parity order all significantly affected the average SCS in this study. Data of the effect of SCS on milk yield showed […]
Keywords: dairy cattle; mastitis; milk yield; somatic cells