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/2009
Antônio Rodrigues da Silva, Antonio Sergio Ferraudo, Dilermando Perecin, Vera Fernanda Martins Hossepian de Lima
DOI: 10.1590/S1516-35982009000700009
The objective of this study was to evaluate the effect of the European and Zebu age of the bull and semen collection periods on the physical and morphological characteristics of the semen produced by animals in an artificial insemination station, from 1993 to 1999. The semen production data were grouped in five age classes: 12 to 36 months, 37 to 60 months, 61 to 84 months, 85 to 108 months and 109 to 142 months; and in four collection periods: […]
Keywords: cattle semen; seasonality; semen quality