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/Apr/2000
Sandra Roselí Valerio, Paulo Rubens Soares, Horacio Santiago Rostagno, Martinho de Almeida e Silva, Luiz Fernando Teixeira Albino, Geraldo Roberto Quintão Lana, [...]
DOI: 10.1590/S1516-35982000000200027
An experiment was carried out to determine the nutritional threonine requirement for white-egg and brown-egg laying hens, during a period from 21 to 36 weeks. Five hundred and seventy six laying hens, 288 from white-egg and 288 from brown-egg, were used during four experimental periods of 28 days each. A complete randomized blocks design in a fatorial arangement (level x trademarks), with six replicates (eight birds/replicate), was used. The treatments consisted on a basal diet with 14.2% crude protein supplemented […]
Keywords: internal egg quality; light-weight hens; requirement; semi-heavy hens; threonine