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.
Thirty Canchim cows, averaged 471 kg of body weight and 50 months old, were fed with supplement during the dry season of 1998, in order to evaluate the precision of the predicted performance for different systems of diet evaluation. The supplements were composed of corn silage, corn grain, citrus pulp, cottonseed meal, soybean meal and whole soybean, in agreement with the recommendations of the Metabolizable Protein System (MP); Cornell Net Carbohydrate and Protein System (CNCPS); and Intestine Digestible Protein System (PDI), for body weight maintenance. The daily body weight change obtained did not differ among treatments CNCPS, MP and PDI, with 0.34; 0.33; and 0.19 kg/head, respectively. When the meat production was the sole objective, the economic analysis revealed R$22.00; R$-44.73; and R$47.27/ha/year for MP, CNCPS and PDI systems, respectively. It was concluded that the adjusted supplements provided compatible results with the estimated animal performance.
Comparison of diet evaluation systems for cattle in an intensive beef production model. Supplementation of pastures to cows in the dry season
Sampaio,Alexandre Amstalden Moraes and Brito,Rodolfo Marques de and Aguiar,Luciano Luz Morgan de and Junior,Paulo Rossi and Cruz,Geraldo Maria da and Alencar,Maurício Mello and Barbosa,Pedro Franklin and Barbosa,Rogério Taveira. Comparison of diet evaluation systems for cattle in an intensive beef production model. Supplementation of pastures to cows in the dry season. R. Bras. Zootec. [online]. 2001, vol.30, 4, [cited 2026-04-24], pp.1287-1292. Available from: <https://rbz.org.br/article/comparison-of-diet-evaluation-systems-for-cattle-in-an-intensive-beef-production-model-supplementation-of-pastures-to-cows-in-the-dry-season/>. ISSN 1516-3598. http://doi.org/10.1590/S1516-35982001000500023.
Sampaio,Alexandre Amstalden Moraes; Brito,Rodolfo Marques de; Aguiar,Luciano Luz Morgan de; Junior,Paulo Rossi; Cruz,Geraldo Maria da; Alencar,Maurício Mello; Barbosa,Pedro Franklin; Barbosa,Rogério Taveira. Comparison of diet evaluation systems for cattle in an intensive beef production model. Supplementation of pastures to cows in the dry season. R. Bras. Zootec., v.30, 4, p. 1287-1292. Jul. 2001. Available from: <https://rbz.org.br/article/comparison-of-diet-evaluation-systems-for-cattle-in-an-intensive-beef-production-model-supplementation-of-pastures-to-cows-in-the-dry-season/>. acess on 24 Apr. 2026. http://doi.org/10.1590/S1516-35982001000500023.
Sampaio,Alexandre Amstalden Moraes, & Brito,Rodolfo Marques de, & Aguiar,Luciano Luz Morgan de, & Junior,Paulo Rossi, & Cruz,Geraldo Maria da, & Alencar,Maurício Mello, & Barbosa,Pedro Franklin, & Barbosa,Rogério Taveira. (2001). Comparison of diet evaluation systems for cattle in an intensive beef production model. Supplementation of pastures to cows in the dry season. R. Bras. Zootec., 30(4) , 1287-1292. http://doi.org/10.1590/S1516-35982001000500023.
SampaioAlexandre Amstalden Moraes, BritoRodolfo Marques de, AguiarLuciano Luz Morgan de, JuniorPaulo Rossi, CruzGeraldo Maria da, AlencarMaurício Mello, BarbosaPedro Franklin, BarbosaRogério Taveira. Comparison of diet evaluation systems for cattle in an intensive beef production model. Supplementation of pastures to cows in the dry season. R. Bras. Zootec. [Internet]. 2001 Jul [cited 2026 Apr 24]; 30(4): 1287-1292. Available from: https://rbz.org.br/article/comparison-of-diet-evaluation-systems-for-cattle-in-an-intensive-beef-production-model-supplementation-of-pastures-to-cows-in-the-dry-season/. http://doi.org/10.1590/S1516-35982001000500023.
Figure 6
Differential abundance for the species Faecalibacterium prausnitzii (A) and Megamonas funiformis (B).
