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/Feb/2010
Angela Maria de Vasconcelos, Maria Ignez Leão, Sebastião de Campos Valadares Filho, Rilene Ferreira Diniz Valadares, Marcia Dias, Débora Andréa Evangelista Façanha Morais
DOI: 10.1590/S1516-35982010000200028
The objective of this study was to assess the variation in the pH, ruminal ammonia, nitrogen compound balance (BN) and microbial synthesis (Nmic) of 12 Holstein cows distributed in three 4 × 4 Latin squares, fed diets containing soybeans in different forms: only soybean meal (SM – control diet), raw soybeans (RS), toasted soybeans (RST) and soybean meal plus 5% urea (SMU), using corn silage as bulk. The microbial protein synthesis was estimated using the purine derivatives in the urine […]
Keywords: milk; purines; soybean grains; urea plasma
Edilane Aparecida da Silva, Telma Teresinha Berchielli, Ricardo Andrade Reis, Alexandre Vaz Pires, Kátia Junko Sato, José Mauro Valente Paes, [...]
01/Feb/2007
Edilane Aparecida da Silva, Telma Teresinha Berchielli, Ricardo Andrade Reis, Alexandre Vaz Pires, Kátia Junko Sato, José Mauro Valente Paes, [...]
DOI: 10.1590/S1516-35982007000100027
Eight crossbred steers fitted with ruminal and duodenal cannulas were randomly assigned to two replicated 4 x 4 Latin squares to evaluate the effects of crude protein (CP) levels on microbial protein synthesis efficiency and in situ degradability of nutrients. Animals received a control diet containing Tifton 85 bermudagrass hay or the control diet supplemented with urea, soybean meal or corn gluten meal-60. Ruminal pH and concentration of ruminal ammonia (NH3-N) were determined in the ruminal fluid at 0 (pre-feeding), […]
Keywords: corn gluten meal 60; pH; purines; ruminal ammonia; soybean meal; urea