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/Dec/2008
José Humberto Vilar da Silva, José Anchieta de Araujo, Cláudia de Castro Goulart, Fernando Guilherme Perazzo Costa, Nilva Kazue Sakomura, Terezinha Domiciano Dantas Martins
DOI: 10.1590/S1516-35982008001200013
Two experiments were carried out to investigate the calcium (Ca):available phosphorus (aP) ratio and the level of phytase in the first and second posture cycle. In the first posture cycle, 128 birds were distributed to a 3 × 2 + 1 factorial arrangement, composed of three Ca:aP ratio [14:1 (4.2% Ca and 0.30% aP), 12:1 (3.5% Ca and 0.30% aP), and 9:1 (3.5% Ca and 0.38% aP)], two levels of phytase (0 and 600 Phytase Units – PU) and a […]
Keywords: brown laying hens; egg production; enzyme
José Humberto Vilar da Silva, José Anchieta de Araujo, Cláudia de Castro Goulart, Fernando Guilherme Perazzo Costa, Nilva Kazue Sakomura, Dermeval Araújo Furtado
01/Dec/2008
José Humberto Vilar da Silva, José Anchieta de Araujo, Cláudia de Castro Goulart, Fernando Guilherme Perazzo Costa, Nilva Kazue Sakomura, Dermeval Araújo Furtado
DOI: 10.1590/S1516-35982008001200012
Two experiments were carried out to evaluate available phosphorus (aP) × phytase interaction of the diet on performance, phosphorus plasma levels and bone parameters of laying hens. In experiment 1, 240 birds with 40 weeks old, were distributed in a 5 × 2 factorial arrangement, composed of five levels of available phosphorus (0.094; 0.194; 0.294, 0.394 and 0.494%) and two of phytase levels (0 and 300 Phytase Units – PU). In experiment 2, 288 birds with 44 weeks old were […]
Keywords: brown laying hens; egg production; enzyme