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/Dec/2000
Evandro Pereira, Joanir Pereira Eler, José Bento Sterman Ferraz
DOI: 10.1590/S1516-35982000000600012
Data of scrotal circumference and female reproductive traits were analyzed to estimate heritabilities and genetic correlations. Data were obtained from 11 farms by the same company, located in the States of São Paulo, Mato Grosso do Sul and Goiás. Variance components were estimated by restricted maximum likelihood using two-trait animal models. For traits with repeated measures, two mathematical models were used: including or not the permanent environment of the cow. Analyses that not included the permanent environment of the cow […]
Keywords: animal model; genetic correlation; reproductive traits; scrotal circumference
01/Jun/2000
Mario Luiz Martinez, Rui da Silva Verneque, Roberto Luiz Teodoro, Luiz Ronaldo de Oliveira Paula, Mauro Cruz, José de Paula Campos, [...]
DOI: 10.1590/S1516-35982000000300009
Data related with semen characteristics such as volume (VOL), gross motility (TURB), motility (MOT), vigor (VIG), concentration (CONC), major defects (DMA) and minor defects (DME) from 807 semen output (CS) of 105 sires of the Gyr breed selected for milk production, and their measurements of scrotal circumference (CE) were used to study factors that affect these traits and the correlations among them. Uni and bivariate animal models that included the fixed effects of AI company, year and season of CS […]
Keywords: correlations; repeatability; scrotal circumference; semen quality