The rumen fermentative characteristics of Nelore steers grazing Brachiaria Brizantha pastures (Teste), or supplemented during the dry season (Seca), dry and wet seasons (Ano) or with free access to a Leucaena bank (Banco), in a randomized block design with four replications, were evaluated. The dry season supplement had 46.9% CP, 70% rumen degradable, and the wet season supplement, 43.9%CP, 60% degradable. Rumen liquor was collected on August, November, February and May. The molar proportions of propionic acid in the supplemented […]

The performance of 192 weaned Nelore steers grazing on Brachiaria brizantha pastures(Teste), or supplemented during the dry season (Seca), all year around (Ano) or with free access to a leucaena bank (Banco), was evaluated in a random block design with four replications. The dry season supplement had 46.9% CP, 70% rumen degradable, and the wet season supplement, 43.9% CP, 60% degradable. During the dry season, the animals of Ano and Seca showed higher gains than Banco and Teste (.534 and […]

The performance, during the summer of beef steers grazing elephantgrass (Pennisetum purpureum Schum.), alexandergrass (Brachiaria plantaginea (Link) Hitchc), sorghum (Sorghum bicolor (L.) Moench) and millet (Pennisetum americanum (L.) Leeke) was evaluated. The grazing period for the elephantgrass occurred from 12/04/93 until 04/26/94, and for the other grasses occurred from 01/04/94 until 04/12/94. The total period of grazing was of 143 days for the elephantgrass and of 98 days for the other pastures. The continuous grazing system with variable stocking rate […]

The objectives of this research were to identify the nitrogen level that promotes the highest animal production per ha and to test the possible effect on the individual animal performance on triticale and ryegrass pasture. The sowing occurred on April 21 of 1997, later on subjected to the following treatments: 0, 150, 300 and 450 kg/ha of nitrogen divided in five applications. Nellore, Charolais heifers and their crosses, with initial average weight of 154 kg were used. The grazing period […]

The objective of this experiment was to evaluate the nitrogen fertilization efficiency using urea, on triticale plus Italian ryegrass pasture, submitted to continuous stocking. Four nitrogen levels were used: 0, 150, 300 and 450 kg of N/ha, divided in five applications. The herbage mass was 1404, 1437, 1619 and 1599 kg of DM/ha. The total herbage production was 6039, 6914, 7877 and 7662 kg of DM/ha and the nitrogen production was 191.6, 247.7, 303.2 and 307.2 kg of N/ha for […]

The effects of concentrate supplementation of stocked an during the rainny season on the body composition of energy and protein and net requirements of protein and energy for weight gain were evaluated. Forty-nine crossbred steers, were Brachiaria decumbens pastures, were used. The experiment was driven in three experimental periods, according to a completely randomized design. The following supplements were daily fed at 10 a.m.: mineral salt (SALT), supplements based on corn and soybean meal, with 20% CP, at the level […]

The influence of the level of intake of elephantgrass, under grazing, on the composition of digesta and on concentration of the marker Cr2O3 throughout the gastrintestinal tract (GTI) of bovines was studied. A split-plot completely randomized design with twelve treatments in the main plots (a 2×6 factorial with two levels of forage ingestion: restricted – NA1 and unrestricted – NA2, and six slaughter periods) and the five sections of GTI in the split-plots was used. Thirty six steers were used, […]

The objective of this experiment was to evaluate the animal productivity and economic return of the use of urea or ammonium sulfate for fertilization of oat (Avena strigosa Schreb) plus ryegrass (Lolium multiflorum Lam.) pasture. The pasture was established on 04/21/94 and the grazing period occured from 06/05 to 11/06/94. The continuous grazing method with variable stocking rate was used. The animals used were beef heifers, with 10 months of age. The amount of nitrogen used was 200 kg/ha, subdivided […]

ABSTRACT – The experiment was conducted to evaluate the animal production and the economic result of the mixtures of oat + ryegrass (MOR), triticale + ryegrass (MTR), rye + ryegrass (MRR) in continuous grazing. Beef heifers with seven months of age and initial 140 kg LW were used. The sowing was broadcast at 04/12/96, using 85 kg/ha of oat, 170 kg/ha of triticale, 140 kg/ha of rye and 30 kg/ha of ryegrass, in the respective mixtures. The area was fertilized […]

ABSTRACT – The objective of the experiment was to evaluate the dynamics, forage yield and quality of the mixtures of oat + ryegrass (MOR), triticale + ryegrass (MTR), rye + ryegrass (MRR) in continuous grazing. Beef heifers with seven months of age and initial 140 kg LW were used. The sowing was broadcast at 04/12/96, using 85 kg/ha of oat, 170 kg/ha of triticale, 140 kg/ha of rye and 30 kg/ha of ryegrass, in the respective mixtures. The area was […]