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.
It was aimed to study the efficiency of microbial synthesis and ruminal parameters in bovine. It were used five 165 kg growing no-castrated Nellore bulls, rumen, abomasum and ileum fistulated.A randomized blocks design with four treatments and five collection periods was used. The treatments consisted of four concentrate levels (20, 40, 60 and 80%). The roughage used was Tifton 85′ (Cynodon dactylon (L.) Pers.) Bermudagrass hay. The diets were isonitrogen with 15% of crude protein. The microbial marker used was purine basis. The averages for total compound nitrogen in the abomasum and microbial nitrogen were 68.58 and 60.75 g/day, respectively. The amount total rumen carbohydrates degraded (CHODR) was 1.37 kg/day. It was observed for microbial efficiency 392.4 g DM microbial/kg CHODR. The bacterial composition and efficiency microbial synthesis were not affected by the concentrate level of the diets.
Microbial Production and Ruminal Parameters in Bullos Fed Diets Containing Different Concentrate Levels
Ítavo,Luís Carlos Vinhas and Filho,Sebastião de Campos Valadares and Silva,Fabiano Ferreira da and Valadares,Rilene Ferreira Diniz and Leão,Maria Ignez and Cecon,Paulo Roberto and Ítavo,Camila Celeste Brandão Ferreira and Moraes,Eduardo Henrique Bevitori Kling de and Rennó,Luciana Navajas and Paulino,Pedro Veiga Rodrigues. Microbial Production and Ruminal Parameters in Bullos Fed Diets Containing Different Concentrate Levels. R. Bras. Zootec. [online]. 2002, vol.31, 3 suppl., [cited 2026-04-23], pp.1553-1561. Available from: <https://rbz.org.br/article/microbial-production-and-ruminal-parameters-in-bullos-fed-diets-containing-different-concentrate-levels/>. ISSN 1516-3598. http://doi.org/10.1590/S1516-35982002000600027.
Ítavo,Luís Carlos Vinhas; Filho,Sebastião de Campos Valadares; Silva,Fabiano Ferreira da; Valadares,Rilene Ferreira Diniz; Leão,Maria Ignez; Cecon,Paulo Roberto; Ítavo,Camila Celeste Brandão Ferreira; Moraes,Eduardo Henrique Bevitori Kling de; Rennó,Luciana Navajas; Paulino,Pedro Veiga Rodrigues. Microbial Production and Ruminal Parameters in Bullos Fed Diets Containing Different Concentrate Levels. R. Bras. Zootec., v.31, 3 suppl., p. 1553-1561. Jun. 2002. Available from: <https://rbz.org.br/article/microbial-production-and-ruminal-parameters-in-bullos-fed-diets-containing-different-concentrate-levels/>. acess on 23 Apr. 2026. http://doi.org/10.1590/S1516-35982002000600027.
Ítavo,Luís Carlos Vinhas, & Filho,Sebastião de Campos Valadares, & Silva,Fabiano Ferreira da, & Valadares,Rilene Ferreira Diniz, & Leão,Maria Ignez, & Cecon,Paulo Roberto, & Ítavo,Camila Celeste Brandão Ferreira, & Moraes,Eduardo Henrique Bevitori Kling de, & Rennó,Luciana Navajas, & Paulino,Pedro Veiga Rodrigues. (2002). Microbial Production and Ruminal Parameters in Bullos Fed Diets Containing Different Concentrate Levels. R. Bras. Zootec., 31(3 suppl.) , 1553-1561. http://doi.org/10.1590/S1516-35982002000600027.
ÍtavoLuís Carlos Vinhas, FilhoSebastião de Campos Valadares, SilvaFabiano Ferreira da, ValadaresRilene Ferreira Diniz, LeãoMaria Ignez, CeconPaulo Roberto, ÍtavoCamila Celeste Brandão Ferreira, MoraesEduardo Henrique Bevitori Kling de, RennóLuciana Navajas, PaulinoPedro Veiga Rodrigues. Microbial Production and Ruminal Parameters in Bullos Fed Diets Containing Different Concentrate Levels. R. Bras. Zootec. [Internet]. 2002 Jun [cited 2026 Apr 23]; 31(3 suppl.): 1553-1561. Available from: https://rbz.org.br/article/microbial-production-and-ruminal-parameters-in-bullos-fed-diets-containing-different-concentrate-levels/. http://doi.org/10.1590/S1516-35982002000600027.
Figure 6
Differential abundance for the species Faecalibacterium prausnitzii (A) and Megamonas funiformis (B).
