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.
The effects of protein supplementation on degradability of dry mattter (DM), crude protein (CP) and neutral detergent fiber (NDF) and acid detergent fiber (ADF) were evaluated in beef cattle grazing Brachiaria brizantha cv Marandu. It was used four Nelore steers (395 ± 9 kg) fitted with ruminal cannula to evaluate kinetics and degradability of the liquid phase and of the particles. Forage samples were collected in other two steers with esophageal cannula. Supplements with 50, 40, and 30% of crude […]
Evaluation of mathematical models for estimating the kinetics of ruminal Passage of particles and liquid of grazing steers Supplemented with different rumen-undegradable protein levels
The effects of supplements containing different rumen-undegradable protein (RUP) levels on the ruminal passage rate of particles and liquid of steers grazing Brachiaria brizantha were evaluated in this study. Samples were collected in two seasons of the year (season 1 May, June and July/2000 and season 2 March, April and May/2001). In season 1, animals were housed in individual stalls and were fed supplements containing 20, 40 or 60% RUP plus Brachiaria brizantha hay and had free access to a […]
Utilization of Three Nitrogen Sources Associated to Cactus Forage (Opuntia ficus-indica, Mill.) cv. Gigante in Dairy Cows Supplementation Grazing at Differed Pasture
The cactus forage only feed for herd not attend nutritional requeriments, because it is poor in protein and fiber. Protein supplementation sources upon the dairy cows performance fed with cactus forage, grazing at differed pasture, and botanic composition of pastre, were evaluated. Three treatments were tested: T1 = differed pasture (DP) + cactus forage (CF) + broiler litter; T2 = DP + CF + soybean meal; T3 = DP + CF + urea/ammonium sulphate mixture. It was used a randomized […]