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.
José Geraldo de Vargas Junior, Luiz Fernando Teixeira Albino, Horacio Santiago Rostagno, Paulo Cezar Gomes, Edwiney Sebastião Cupertino, Débora Cristine de Oliveira Carvalho, [...]
01/Aug/2004
José Geraldo de Vargas Junior, Luiz Fernando Teixeira Albino, Horacio Santiago Rostagno, Paulo Cezar Gomes, Edwiney Sebastião Cupertino, Débora Cristine de Oliveira Carvalho, [...]
DOI: 10.1590/S1516-35982004000400014
Four experiments were carried out using white-egg pullets and brown-egg pullets in two different phases, growth phase (7 to 12 age weeks) and production phase (20 to 28 age weeks), with objective to determine requirements of calcium and available phosphorus and the effects of levels calcium e available phosphorus in production. Chickens from 13 to 19 weeks age were identified for treatment and fed only commercial diet. For each experiment, the chickens were allotted in a completely randomized design with […]
Keywords: brown-egg pullets; calcium available phosphorus; nutritional requirements; white-egg pullets
José Geraldo de Vargas Junior, Luiz Fernando Teixeira Albino, Horacio Santiago Rostagno, Paulo Cézar Gomes, Edwiney Sebastião Cupertino, Débora Cristine Oliveira Carvalho, [...]
01/Dec/2003
José Geraldo de Vargas Junior, Luiz Fernando Teixeira Albino, Horacio Santiago Rostagno, Paulo Cézar Gomes, Edwiney Sebastião Cupertino, Débora Cristine Oliveira Carvalho, [...]
DOI: 10.1590/S1516-35982003000800016
Four experiments were accomplished using 720 white-egg pullets and 720 brown-egg pullets from 0 to 6 age weeks, were allotted to a completely randomized design with five calcium levels (.70, .80, .90, 1.00, and 1.10%) or five levels of available phosphorus (.30, .35, .40, .45, and .50%), with four replicates and 18 pullets for experimental unit. The experimental diets were formulated with soybean meal and corn to contain 2900 kcal of metabolizable energy/kg of diet, 18% crude protein, .70% calcium […]
Keywords: available phosphorus; brown-egg pullets; calcium; nutritional requirements; white-egg pullets