The effects of overfeeding with protein of different degradability on body condition, plasma urea nitrogen and progesterone concentrations, ovulation number and follicular dynamics were assessed in Santa Ines ewes. Twelve ewes were assigned to a randomized block design according to body weight and received overfeeding with soybean meal or with corn gluten meal or maintenance diet for 28 days before ovulation and during the next estrous cycle. Blood samples were taken on days 7, 14, 21, and 28 after the […]

The objective of this study was to evaluate the performance of Texel × Ile de France female hoggets on pearl millet (Pennisetum americanum (L.) Leeke) pastures fed supplementation with cassava meal or corn gluten. It was used a completely randomized experimental design, with three treatments (feed strategies) and two area replications. Feed strategies consisted of supplementation of the pastures with cassava meal or corn gluten in comparison to exclusive pasture. Supplements were given daily at 9:00 a.m. at quantity of […]

This study aimed at evaluating plasma concentration of urea nitrogen, the number of ovulations and the diameter of ovulatory follicle of Santa Ines ewes submitted to flushing with sources of protein with different ruminal degradabilities. Forty-four estrus-synchronized ewes were fed isoprotein diets composed of soybean meal (n = 24) or corn gluten meal and cottonseed meal (n = 20) for 28 days before ovulation. Animals were distributed in a block design in which the blocks were formed by three score […]

The feeding behavior and dry forage intake of ewe lambs receiving different types of supplementation on pearl millet (Pennisetum americanum (L.) Leeke) pasture was evaluated. Twenty-four ewe lambs with 30.2 ± 2.6 kg mean initial body weight (BW), distributed in three feeding strategies: grazing on pearl millet pasture; grazing on pearl millet pasture supplemented with cassava meal; and GL – grazing on pearl millet pasture supplemented with corn gluten meal. Supplements were provided in the amount of 1% of BW. […]

The objective of this work was to evaluate the ruminal degradable nitrogen (RDN) deficit using as roughage sugar cane supplemented with urea, soybean meal, or corn gluten meal 60 on the microbial synthesis efficiency, in situ dry matter (DM) and neutral detergent fiber (NDF) degradability. The treatments were: sugar cane, sugar cane with urea, soybean meal or corn gluten meal 60. Eight rumen and duodenum cannulated steers were used and arranged according to two 4 × 4 Latin Squares. The […]

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 intake and total, ruminal and intestinal digestibility of nutrients. Animals were fed a control diet containing Tifton 85 bermudagrass hay or the control diet supplemented with urea (NPN diet), soybean meal (SBM diet) or corn gluten meal-60 (CGM diet). Indigestible acid detergent fiber was used as the internal marker for […]

Three wethers averaging 50 kg LW, fitted with four catheters, in the mesenteric vein, mesenteric artery, portal vein and hepatic vein, were used to evaluate nutrient intake and glucose, a-amino nitrogen, ammonia and urea splanchnic fluxes in sheep fed with different protein sources. Statistical design was a 3×3 Latin square. Treatments consisted of three different protein sources utilization: soybean meal, hydrolyzed feather meal and corn gluten meal. There were no treatment effects over intake of dry matter (DM), organic matter […]