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
Marcela Piedade Monteiro, George Henrique Kling de Moraes, Flavia Escapini Fanchiotti, Maria Goreti de Almeida Oliveira, Ana Cláudia Peres Rodrigues, Luiz Fernando Teixeira Albino, [...]
DOI: 10.1590/S1516-35982006000400018
An experiment was conducted with male broiler chicks to study the effects of 20 and 23% of crude protein (CP) combined with 0, 50, 100, 150, 200, 250 mEq/kg of dietary electrolytic balance (DEB) on the pancreatic a-amylase activity from 1 to 21 days. A completely randomized factorial design was used. Feed and water were supplied ad libitum. At days 1, 7, 14 and 21, three birds from each treatment were sacrificed by cervical dislocation, pancreas were removed, homogeneized and […]
Keywords: alpha-amylase; broiler chicks; dietary protein; electrolytic balance; electrolytic balance
01/Feb/2006
Carlos de Sousa Lucci, Edison Valvasori, Kleber Peixoto Junior, Valter Fontolan
DOI: 10.1590/S1516-35982006000100033
Twenty-four lactating dairy cows were assigned to a completely randomized block design to compare the effects of isoenergetic diets but different crude protein (CP) levels: P100- 100%, P133- 133% or P166- 166% of the NRC (1989) requirements on the concentrations of urea nitrogen in plasma (PUN) and milk (MUN). Increasing levels of CP were obtained by adding urea to the diet. Feeds, milk, and blood were all collected weekly from 30 days before to 60 days after parturition. Milk yield […]
Keywords: dietary protein; milk urea nitrogen; milk yield; plasma urea nitrogen