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.
26/Aug/2025
Francielle de Oliveira Marx
, Vivian Izabel Vieira
, Marcus Vinicius Niz Alvarez
, Emanuele Cristiny Goes
, Ananda Portella Félix
, Simone Gisele de Oliveira
, [...]
ABSTRACT The objective of this study was to determine the optimal concentration of digestible methionine plus cystine (Met+Cys) for broiler chickens. We allocated 1,296 male broiler chickens in a completely randomized design with six treatments and nine replicates of 24 broiler chickens each. From 1 to 21 days old, broiler chickens were fed a basal diet. At day 21, the experimental diets were offered, which consisted of a basal diet (with no inclusion of synthetic methionine) and five diets supplemented […]
Keywords: digestible Met+Cys; optimal concentration; performance; statistical model
29/Nov/2019
ABSTRACT This study was conducted to compare predictive performances of different data-mining algorithms for determining factors influencing the average daily milk yield at dairy cattle enterprises of Ardahan province, located in the Eastern Anatolia region of Turkey. The algorithms employed in the present study were Classification and Regression Tree (CART), Chi-Square Automatic Interaction Detector (CHAID), Exhaustive Chi-Square Automatic Interaction Detector (Exhaustive CHAID), Multivariate Adaptive Regression Splines (MARS), and Multilayer Perceptron (MLP). The MARS algorithm outperformed the other algorithms in the […]
Keywords: milk yield; production economics; statistical model
01/Nov/2011
Fábio Luiz Buranelo Toral, Roberto Augusto de Almeida Torres Júnior, Paulo Sávio Lopes, Luiz Otávio Campos da Silva
DOI: 10.1590/S1516-35982011001100014
This study was carried out to evaluate some alternatives for modeling of genetic and environmental effects influencing the weaning weight of Charolais-Zebu crossbred calves. The weaning weight data of 56,965 calves with alleles’ percentage from the Charolais breed varying from 23% to 66% were used. The models under comparison differed for the inclusion of the individual and maternal additive and non-additive genetic effects, as well as the way to model those effects (multiple regression or discrete variable). The inclusion of […]
Keywords: beef cattle; crossbreeding; heterozygosis; multiple-breed genetic evaluation; statistical model