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.
Carlos Augusto Quadro Borges, Horacio Santiago Rostagno, José Humberto Vilar da Silva, Luiz Fernando Teixeira Albino, Ciro Alexandre Alves Torres, José Jordão Filho, [...]
01/Oct/2006
Carlos Augusto Quadro Borges, Horacio Santiago Rostagno, José Humberto Vilar da Silva, Luiz Fernando Teixeira Albino, Ciro Alexandre Alves Torres, José Jordão Filho, [...]
DOI: 10.1590/S1516-35982006000700014
Two trials were carried out to estimate the nutritional requirement and carcass composition of male broiler breeders according to five levels of metabolizable energy (ME) ingestion. Four hundred and fifty females and 75 males of Cobb-500 strain were selected to evaluate body weight, semen volume, spermatic concentration, motility, vigor and fertility of spermatozoa. Thirty males were used for evaluation of carcass chemical composition (DM, CP and crude fat [CF]) as a function of energy intake. The experiment was analyzed as […]
Keywords: fertility; nutrition; performance reproductive; sex selection