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/Oct/2006
Ricardo Vianna Nunes, Paulo Cezar Pozza, Carina Scherer, Evandro Campestrini, Leonardo Dornelles da Rocha, Christiane Garcia Vilela Nunes, [...]
DOI: 10.1590/S1516-35982006000700018
The effect of feeding increasing calcium levels for semi-heavy laying hens during the prelay phase and its effects in the four subsequent weeks were evaluated in this trial. Two hundred and eighty-eight Isabrown birds with 16 weeks of age were allotted to a complete randomized design with four treatments, eight replicates and nine birds per experimental unit. The corn and soybean meal-based diets were formulated to meet the bird nutrient requirements, with the exception of calcium levels. The experiment lasted […]
Keywords: calcium requirements; egg production; eggs quality
01/Apr/2004
Luciano Moraes Sá, Paulo Cezar Gomes, Horacio Santiago Rostagno, Luiz Fernando Teixeira Albino, Paulo Roberto Cecon, Priscila D'Agostini
DOI: 10.1590/S1516-35982004000200017
Two experiments were carried out to determine the nutritional requirement of calcium for broilers in growing (22 to 42 days), and finishing (43 to 53 days) phases. Three hundred and sixty Avian Farm broiler chicks (180 from each sex) were used in both trails. The first experiment lasted 21 days and the second one, 10 days. A completely randomized design was used in both experiments, with six treatments, six replications and 10 birds per experimental unity (five males and five […]
Keywords: bones; broiler chicks; calcium requirements; performance