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.
11/Sep/2025
Thaise Pinto de Melo
, Andreia Kaspary Zwirtes
, Lavínia Aires Evangelho
, Saymon Silva Rocha
, Luiza Comin da Silveira
, Louíse Belmonte Faverzani
, [...]
ABSTRACT The objective of this study was to unravel the genetic architecture of growth traits in sheep through a meta-analysis of genetic parameters (i.e., direct, maternal, and total heritability estimates, as well as genetic correlations), a systematic review, and a functional analysis to identify candidate genes and metabolic pathways related to growth traits. A random effects model was used to obtain the pooled effect estimates for the genetic parameters, and heterogeneity was assessed using both I2 and Cochran’s Q statistics. […]
Keywords: genetic correlation; GWAS; heritability; pleiotropic; pooled estimates; weight
01/Aug/2005
Juliana Di Giorgio Giannotti, Irineu Umberto Packer, Maria Eugênia Zerlotti Mercadante, César Gonçalves de Lima
DOI: 10.1590/S1516-35982005000400010
Heritability estimates of growth traits are essential informations in animal breeding programs. In this paper, 869 heritability estimates of birth weight, weaning weight, weight at 365 days old and weight at 550 days old, of 186 reports were compiled. The estimates were divided in groups using the Ward method of cluster analysis, and pooled by meta-analysis. It was observed, for all traits, that groups from Nelore breed, majority in Brasil, showed greater pooled heritability estimates than the other groups. The […]
Keywords: genetic parameters; multivariate analysis; pooled estimates; random effects models
01/Aug/2005
Juliana Di Giorgio Giannotti, Irineu Umberto Packer, Maria Eugênia Zerlotti Mercadante
DOI: 10.1590/S1516-35982005000400011
A meta-analysis was conducted to summarize published heritability of estimates growth traits of zebu beef cattle of 186 reports. The factors affecting weighed heritability estimates were analyzed by the least square means method for a model including fixed effects. Breed and estimation method were the significant factors in the four traits (birth weight, weaning weight, weight at 365 days and weight at 550 days). Estimation method is always recommeded to summarize these estimates. The pooled heritability estimates for birth weight, […]
Keywords: genetic parameters; pooled estimates; zebu cattle