Eighteen ½ Ile de France ½ Polwarth sheep (6 no castrated lambs, 6 discarded ewes and 6 discarded wethers) were used to evaluate qualitative traits of meat from different categories of sheep for muscle cuts (shoulder, loin and leg). The animals were raised in grazing system with tifton-85 pastures and supplemented with concentrate. Lambs were slaughtered at 32 kg body weight, close to 5 months of age. Ewes and wethers were slaughtered with 55 kg and 60 months of age. […]

Three experiments were carried out to evaluate the performance and nutritional value of the extruded corn for broilers from one to 21 days of age. In the first experiment, the metabolism of pre-gelatinized corn, corn starch and corn germ meal was assessed by the total excreta collection method from 4 to 7 days of age and values of apparent (AME) and corrected metabolizable energy (CAME) and the results were, respectively: 3370, 3379.7, 3259.1 kcal/kg de AME and 3299.8, 3369.7, 3051.6 […]

The objective of this study was to evaluate the influence of the ionophore monensin on the intake, weight gain, feed:gain ratio and withers and croup heights of heifers maintained in feedlot, and also the feeding costs. Twenty eight Holstein heifers were confined individually for 84 days, and fed diets containing 32.84% concentrate (corn grain, soybean meal, urea and mineral mix) and 67.16% corn silage and sugar cane, at the proportion of 1:1 in DM. The ionophore levels added to the […]

A trial was carried out to evaluate the effect of sunflower meal inclusion in the broiler diets on the performance, carcass yield and cuts and the economics viability. A randomized block experimental design was used, with five treatments and eight replications of 20 birds per experimental unit. Treatments consisted of including 0, 5, 10, 15, or 20% sunflower meal in a basal diet. Birds and diets were weighed at the beginning and at the end of each experimental phase (1 […]

The objective was to evaluate the effect of protein and (or) carbohydrate supplementation on the rumen degradation of neutral detergent fiber (NDF) from high-quality tropical forage. The experiment simulated the supplementation of finishing cattle under grazing during the rainy season (70:30 forage to concentrate ratio, as dry matter basis). Samples of elephant grass (Pennisetum purpureum Schum.) cut after 21 days regrowth were used as basal forage. The concentrate used was formulated to contain 30% crude protein, using starch as the […]

This study was carried out with the objective of describing the aerial and underground organs of birdsfoot trefoil [Lotus corniculatus (São Gabriel and ARS-2620 cultivars)] and big trefoil [Lotus uliginosus (Maku cultivar)]. The plants were cultivated in pots and harvested at 150 and 210 days after sowing. Stems, leaves and roots were prepared in according to conventional anatomical techniques. The anatomical structures of L. corniculatus and L. uliginosus differed in terms of pith cell integrity, starch content in the parenchyma […]

This study was carried out to evaluate total lipids (TL), cholesterol and fatty acids (FA) in the longissimus dorsi muscle of Bos taurus (n=40) and Bos indicus (n=40) bulls, aged 30-36 months and 240-270 kg carcass weight, finished in the feedlot for 90 days. The total lipids content was similar in both groups. Cholesterol was higher in Bos indicus (66.95 mg/100 g) than in Bos taurus (37.37 mg/100 g). For saturated fatty acids, the means for C14:0 and C18:0 were […]

The objective of this study was to evaluate different models in the adjustment of weight gain (WG) responses, obtained in an experiment carried out with ISA Label birds from 1 to 28 days of age. A total of 480 male and female chicks were distributed in a completely randomized design, in a 4 X 2 factorial arrangement (lysine levels X sex), with three replications of 20 birds each. The basal diet was formulated to meet the chick requirements, except for […]

The objective of this trial was to investigate the spatio-temporal dynamics of feeding sites stratified by strips of herbage mass and sward height, and the percentage of effectively grazed area, herbage growth rate and dry matter yield of a natural pasture from Pampa Biome managed with different herbage allowance management strategies. A randomized block design with two replications was used with three fixed herbage allowance (8, 12 and 16%) and three herbage allowance variables throughout the year (8-12%, 12-8%, and […]

This trial was conducted aiming to evaluate the effects of Brachiaria brizantha vegetative seed harvest residues hay treated with anhydrous ammonia (NH3) or urea, and protein sources on the steers performance, and carcass quality. Twenty-four male beef cattle were (12 F1 Nellore X Aberdeen Angus and 12 F1 Nellore X Red Angus), distributed in four treatments, with six replications. Animal crossbreed type and initial body weight were considered blocks. The diets were: Untreated hay supplemented with non-protein nitrogen (UHNPN); untreated […]