The effects of three diets and two feeding managements were assessed on feedlot lamb performance and carcass. Thirty six lambs with initial 18.7 ± 2.4 kg weight were distributed in a randomized complete block design in a 3 × 2 factorial arrangement and were fed a free-lipid diet, and a sunflower grains-added diet or a protected fat-added diet. Six lambs on each diet were submitted to feeding restriction management and later compensatory gain, while the other half was fed ad […]

The objective of this study was to evaluate correlations between the structural characteristics and nutritional value of different U. decumbens cv. Basilisk pastures. The experiment was carried out in a split-plot design following a randomized block design with two replications. The treatments were combinations among the different pasture periods (73, 103, 131 and 163 days) and the grazing periods (1, 29, 57 and 85 days). The green leaf blade matter (GLB) correlated positively with the percentages of crude protein (CP), […]

The effects of supplementing feedlot diets with ionophores and breed type were assessed on growth rate and carcass characteristics in hair lambs. Twenty four intact males, 12 Pelibuey × Dorper (PDo) and 12 Pelibuey × Damara (PDa) lambs, 17.9 ± 3.7 kg initial weight, were housed in individual pens for a 60-d feeding trial. The lambs were assigned randomly into four diets: control without additives (C); 25 µg/g monensin (M); 28 µg/g salinomycin (S); 28 µg/g S for 20 d, […]

The carcasses of 800 steers derived from rotational crossbreeding between Charolais and Nellore breeds, slaughtered at two years of age, were evaluated. The evaluated characteristics were the following: conformation, cushion thickness, arm perimeter, Longissimus dorsi area, Longissimus dorsi area divided by 100 kg of cold carcass weight (AOL100). Two models were used for the data analyses: Model 1 included the genetic effects of the breeding system and steer genetic group nested within the breeding system and Model 2 corresponded to […]

The objective of this study was to evaluate the growth of young heifers from different genetic groups in an intensive meat production system. One hundred and thirty two heifers from four different genetics groups were used: 18 – ¾ Canchim × ¼ Nellore (¾ CN), 18 – ½ Canchim × ½ Nellore (½ CN), 24 Simbrasil – ⅝ Simmental × ⅜ Nellore (SIMB) and 72 – Three way cross ¼ Simmental × ¼ Nellore × ½ Angus. The heifers were […]

The effects of different ratios of sugarcane and elephant grass (0:100, 25:75, 50:50, 75:25 and 100:0% of the natural basis) were assessed on the chemical composition and losses in silages treated with a bacterial inoculant, using laboratory silos. A 2 × 5 factorial arrangement (with and without inoculant and five elephant grass ratios) in a randomized blocks design with three replications was used. Interaction was observed in the sugarcane and elephant grass ratio × bacterial inoculant for crude protein (CP) […]

The objective of this study was to evaluate the effect of adding mesquite pod meal (0, 33.3, 66.7 and 100%) to substitute corn meal on purin derivative the excretion, estimated by total urine collection, and on the ruminal parameters (pH, ammonia and volatile fatty acids). Eight lactating goats were used and distributed in a 4 × 4 Latin square and fed iso-protein diets consisting of 40% elephant grass silage and 60% concentrate. There was no significant effect from adding mesquite […]

This trial aimed to investigate the influence of calf genetic group on the ingestive behavior of Nellore dams and their offspring on pasture. Twenty one primiparous and multiparous Nellore cows were assigned to the experiment; 13 cows nursed straightbred Nellore calves; and eight cows nursed halfbred Simmental × Nellore calves. The observations started in the morning, as soon as identification of the animals in daylight was possible, and they lasted until after sunset, when identification became impossible. The observations were […]

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. […]

Diets for dairy heifers were assessed with corn silage and soybean or cotton seed based concentrate. Four experimental diets consisting of the combination of two concentrate levels, 1 or 2 kg, and two protein sources, soybean meal or cotton seed meal. The effect of the interaction was observed for intake of dry matter (DM), neutral detergent fiber (NDF) in % live weight and total digestible nutrient intake (TDN). The quantity of concentrate influenced the intakes of crude protein (CP), NDF, […]