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.
Valdir Silveira de Avila, Aline Paula, Paulo Antônio Rabenschlag de Brum, Waldomiro Barioni Júnior, João Carlos Maier
01/Aug/2006
Valdir Silveira de Avila, Aline Paula, Paulo Antônio Rabenschlag de Brum, Waldomiro Barioni Júnior, João Carlos Maier
DOI: 10.1590/S1516-35982006000600016
The objective of this study was to evaluate the effects of vitamin and micromineral levels adjustment in the test diet on the total collection method for determination of apparent metabolizable energy (EMA) and apparent metabolizable energy corrected by nitrogen retention (EMAn) of soybean meal. Two treatments were compared: the test diet without or with adjustments in the amounts of choline chloride and vitamin-micromineral premix, when 40% of the reference diet was replaced with soybean meal. The traditional total feces collection […]
Keywords: chicken; energy; methods; micronutrients; nutrition
01/Apr/2004
José Marques Carneiro Júnior, Ricardo Frederico Euclydes, Paulo Sávio Lopes, Robledo de Almeida Torres
DOI: 10.1590/S1516-35982004000200008
Studies on simulation were carried out aiming to achieve a comparative analysis between the following variance component estimation methods: Restrict Maximum Likelihood (REML), Maximum Likelihood (ML) and Method III of Henderson. All of them were used as a reproducer model, and the REML method was also used as a animal model. The main objective was to verify the effect of the unbalanced data on the estimation of the variance components. A genomic, made of a single quantitative characteristic, ruled by […]
Keywords: animal breeding; methods; simulation; variance components