The objective of this research was to evaluate weights and percentages of some organs in relation to live weight at slaughter (LWS), empty body weight (EBW) and total organs production (TOP) of intact 1/2 Ile de France 1/2 Polwarth male lambs. The lambs were finished in feedlot and fed diets with roughage:concentrate ratios of 50:50 and 30:70 and slaughtered at 30 or 34 kg. Tongue, lungs with trachea, heart, liver, pancreas, thymus, thyroid, adrenal, kidneys, testicles, spleen, diaphragm, bladder, penis […]

The objective of the present study were evaluated the performance, quantitative and qualitative characteristics of the carcass in growing rabbits feeding with diets contents different starch levels (22 or 32% on average) by high or low inclusion of corn grain and different fiber sources (alfalfa hay or soybean hulls), in 2×2 factorial design. The experimental diets were pellets and fed ad libitum during 40 days to 40 rabbits weaned at 35 days, housed individually and assigned to a complete randomized […]

The experiment run at the Agronomic Experimental Station of the Federal University of Rio Grande do Sul, located in the district of Eldorado do Sul, Brazil, to evaluate the performance of 40 crossbred Bos indicus x Bos taurus calves until two years old, early weaned (EW) with average age of 91 days and minimum liveweight of 70 kg, or weaned at conventional age (CW), averaging 170 days old and liveweight of 131.2 kg, supplemented (Su) or not (NSu) with energy-protein […]

Thirty-one Hampshire Down, Ile de France and Suffolk crossbred lambs divided into four treatments: intact, castrated with burdizzo, with rubber bands and with knife, were used in this experiment. Castration occurred at 58 days of age. After weaning, at 84 days, the animals were fed lot until 30 to 32 kg of live weight, and then slaughtered. There were no significant differences among treatments and genetic groups for birth, weaning and slaughter weights, for average daily gain from birth to […]

It was slaughtered 24 animals confined, being 8 (4 castrated and 4 entire) from each genetic group (Nelore, ½ Nelore x Sindi cattle and e Mediterrâneos buffaloes), with 430 kg mean weight, in order to compare carcass and slaughter yield. Data obtained were analyzed statistically in a factorial scheme 3 x 2 (3 genetic groups x 2 sexual conditions) with 4 repetitions. Nelore and ½ Nelore x Sindi cattle presented smaller percentage of foot (2.13, 2.08 vs 2,31%), head (3.99, […]

Twenty-four Holstein crossbred young bulls, with initial average weight of 75 kg and final average weight of 215 kg, under feedlot, were used to to evaluate the intake, average weight gain, feed:gain ratio, carcass and basic cuts yield and physical carcass composition. The animals were fed elephant grass with 30 to 45 days of age, soybean meal, corn meal, meat meal and mineral mix basal concentrate, and broiler litter, that constituted the treatments: 1 = 50% forage and 50% concentrate, […]

Sixty barrows from crossing between commercial hybrids with an average initial weight of 95.7 ± 0.80 kg and an average final weight of 109.8 ± 1.13 kg were used to evaluate different dietary lysine levels on performance and on carcass characteristics. The experimental design used was a randomized blocks with five treatments, six replicates and two animals per replicate. The treatments corresponded to a basal diet with 13.7% of crude protein, 3367 kcal DE/kg supplemented with five L-lysine-HCl levels, resulting […]

Three experiments were carried out to determine the nutritive value and to evaluate the performance of growing rabbits on fed isoenergy rations containing different pearl millet levels. In a digestibility assay (experiment 1) the nutritive values of Common, BN2 and Iapar IA 98301 pearl millet were determined for 40 male New Zealand White rabbits, 45 days old, allotted in a completely randomized design, with 10 replications. Pearl millet replaced 30% of reference ration in each treatment. Values of digestible energy […]

Fourty-eight barrows proceeding from crossing between commercial hybrids were used in a study to evaluate the different lysine levels on the performance and the carcass characteristics. The swines average initial and final weight was 110.1 ± 0.72 kg and 125.3 ± 1.23 kg, respectively. The animals were distributed in an experimental design of randomized blocks with four treatments, six replicates and two animals per replicate. The treatments corresponded to a basal diet with 13.7% of crude protein and 3367 kcal […]

The objective of the experiment was to study the quantitative and qualitative characteristics of carcass and meat of steers of four genetic groups, Charolais (C), Nellore (N), crossbreds with predominance of C (3/4 C 1/4 N and 5/8 C 3/8 N – CRC) and crossbreds with predominance of N (3/4 N 1/4 C and 5/8 N 3/8 C – CRN), submitted to four feed treatments during the feedlot finishing phase, which were the following levels of substitution of sorghum grain […]