The experiment was carried to study three three levels (0, 50 e 100%) of high moisture corn silage replacing dry corn grain in rations of lambs fed in creep feeding. Twenty four Suffolk lambs were evaluated to qualitative and quantitative loin (longissimus dorsi) characteristics. Lambs were weighed until to reach pre-fixed slaughter weight, 28 kg LW. Cold carcasses were cut in seven anatomical regions. Four measures were taken on longissimus dorsi surface: maximum width; minimal depth; minimal fat depth and […]

The objective of the experiment was to study the development and carcass characteristics of Nellore steers, slaughtered at two years of age classified in four groups according to the average daily weight gain (ADG) pre and post seven months: high-high = steers with ADG ³ .44 kg from birth to slaughter, low-low = steers with ADG < .44 kg from birth to slaughter, high-low = steers with ADG > .44 kg before seven months, and ADG < .44 kg from […]

Three Holstein steers, canulated in the rumen, where were incubated nylon bags with sugarcane bagasse, were maintained in feedlot, in individual boxes, according to the following treatments: T1 – bagasse without treatment (control); T2 – bagasse treated with 2.5% Na2S; T3 – bagasse treated with 4% NH3 and T4 – bagasse treated with 2.5% Na2S + 4% NH3. Higher potential degradability was observed for the treatment with bagasse treated with NH3 and NH3 plus Na2S. Dry matter degradability ranged from […]

The objective of the experiment was to evaluate, through feedlot performance of calves, three corn hybrids (Zea mays, L.): Agroceres AG-5011, Braskalb XL-344 and Cargill C-806. For the evaluation, 27 Nellore x Charolais non-castrated crossbred males with average age of 10 months and average initial weight of 252 kg, were used. The animals were fed during 84 days, divided in four periods of 21 days. The hybrids silages tested represented 70% of the dry matter offered. No significant interaction of […]

This study was conducted to evaluate the effect of 0.0, 3.3, 6.6, and 9.9% soybean oil inclusion in isoenergy diets on transit time (TT), performance, carcass characteristics and body composition of broilers from 21 to 56 days of age. The TT was determined at 22 and 42 days of age. Eight hundred and fourty broilers, with initial average weight of 870 g, allotted to a completely randomized design, with four treatments, six replications and 35 broilers per experimental unit, were […]

The objective of this experiment was to evaluate the physical carcass composition, meat quality and cholesterol content in the Longissimus dorsi muscle of 5/8 Nellore – 3/8 Charolais steers feedlot finished to reach slaughter weight (SW) of 425, 467 and 510 kg. At the beginning of feedlot, average age, weight and body condition were, respectively, 660 days, 361 kg and 2.9 points. The diet offered, with roughage:concentrate ratio of 60:40, contained 10.25% of crude protein, 72.18% of total digestible nutrients […]

With the objective of evaluating the enzymatic activity of the trypsin in the intestinal content of the bullfrog (Rana catesbeiana Shaw, 1802), 320 animals with average weight of 3.6 grams were distributed in stall-test with temperature and photoperiod controlled. The frogs selected in the post-metamorphic phase were fed commercial extruded diet ad libitum. For 87 days of experiment, 29 collections were performed at intervals varying from one to eight days. The collections of the intestinal content were performed by the […]

The aim of this study was to evaluate morphogenetic characteristics and net herbage accumulation rate in Mombaçagrass pastures under three grazing intervals (28, 38 and 48 days) from October 1995 to September 1996. Trials were set in a split plot randomized block experimental design, with grazing intervals as main plots and periods as subplots. Leaf and stem elongation rates, leaf senescence rate, tiller density and pasture height were evaluated. Net herbage accumulation rate was estimated using tissue turnover data. Leaf […]

The objective of the experiment was to evaluate the feedlot performance of 5/8 Nellore-3/8 Charolais steers slaughtered at 425, 467 and 510 kg. The steers presented at the beginning of the confinement average age of 660 days, live weight of 361 kg and body condition score of 2.9 points. The animals were fed with a 60:40 roughage:concentrate diet, containing 10.25% of crude protein (CP), 72.18% of total digestible nutrient (TDN) and 3.18 Mcal of digestible energy (DE)/ kg of DM. […]

In order to determine the apparent metabolizable energy (AME) and N-corrected apparent metabolizable energy (AMEn) of fresh and oxidized poultry fat a metabolism assay with 48 AgRoss male broilers from 31 to 34 days of age was conducted. The birds were fed a basal diet or this diet replaced by 10% of fresh or oxidized fat and the total excreta collection method was applied. The birds were housed in metabolic cages and each diet was supplied for four replicates of […]