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.
66.035 records from Nellore, Hereford, Angus and Nellore x Angus and Nellore x Hereford crossbred calves were analyzed to estimate the influence of cow age, age at weaning and the julian birth date on average daily gain from birth to weaning. The statistical analysis indicated that these three covariates had significant effects on this trait. Furthermore, the linear adjustment for age at weaning was not enough to remove this effect on the average daily gain. These results show that these environmental effects can be an important variation source for this trait in animal improvement programs.
Enviromental effects on preweaning daily gain in Angus, Hereford, Nellore and Angus X Nellore and Hereford X Nellore crosses
Teixeira,Rodrigo de Almeida and Albuquerque,Lucia Galvão de. Enviromental effects on preweaning daily gain in Angus, Hereford, Nellore and Angus X Nellore and Hereford X Nellore crosses. R. Bras. Zootec. [online]. 2003, vol.32, 4, [cited 2026-04-24], pp.887-890. Available from: <https://rbz.org.br/article/enviromental-effects-on-preweaning-daily-gain-in-angus-hereford-nellore-and-angus-x-nellore-and-hereford-x-nellore-crosses/>. ISSN 1516-3598. http://doi.org/10.1590/S1516-35982003000400014.
Teixeira,Rodrigo de Almeida; Albuquerque,Lucia Galvão de. Enviromental effects on preweaning daily gain in Angus, Hereford, Nellore and Angus X Nellore and Hereford X Nellore crosses. R. Bras. Zootec., v.32, 4, p. 887-890. Aug. 2003. Available from: <https://rbz.org.br/article/enviromental-effects-on-preweaning-daily-gain-in-angus-hereford-nellore-and-angus-x-nellore-and-hereford-x-nellore-crosses/>. acess on 24 Apr. 2026. http://doi.org/10.1590/S1516-35982003000400014.
Teixeira,Rodrigo de Almeida, & Albuquerque,Lucia Galvão de. (2003). Enviromental effects on preweaning daily gain in Angus, Hereford, Nellore and Angus X Nellore and Hereford X Nellore crosses. R. Bras. Zootec., 32(4) , 887-890. http://doi.org/10.1590/S1516-35982003000400014.
TeixeiraRodrigo de Almeida, AlbuquerqueLucia Galvão de. Enviromental effects on preweaning daily gain in Angus, Hereford, Nellore and Angus X Nellore and Hereford X Nellore crosses. R. Bras. Zootec. [Internet]. 2003 Aug [cited 2026 Apr 24]; 32(4): 887-890. Available from: https://rbz.org.br/article/enviromental-effects-on-preweaning-daily-gain-in-angus-hereford-nellore-and-angus-x-nellore-and-hereford-x-nellore-crosses/. http://doi.org/10.1590/S1516-35982003000400014.
Figure 6
Differential abundance for the species Faecalibacterium prausnitzii (A) and Megamonas funiformis (B).
