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, Débora Cristine Oliveira Carvalho, Edwiney Sebastião Cupertino, [...]
01/Oct/2004
José Geraldo de Vargas Junior, Luiz Fernando Teixeira Albino, Horacio Santiago Rostagno, Paulo Cezar Gomes, Débora Cristine Oliveira Carvalho, Edwiney Sebastião Cupertino, [...]
DOI: 10.1590/S1516-35982004000500019
Four experiments were accomplished, where two for determine requirements calcium (whit- egg pullets and brown- egg pullets) and two for determine available phosphorus (white-egg pullets and brown-egg pullets). Two different phases (growing and production) were used for each experiment, where the chickens were allotted to a completely randomized design with five calcium levels (.55, .65, .75, .85, and .95%) or five available phosphorus levels (.20, .25, .30, .35, and .40%), four replicates and 12 pullets/EU for the growth phase (13 […]
Keywords: brown-egg replacement pullets; calcium available phosphorus; nutritional requirements; white-egg replacement pullets
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