Two experiments were carried out to evaluate partial substitution of soybean meal (SM) by texturized soybean protein (TSP) in the pre-starter diet, for piglets weaned at 21 days of age. Four levels (0, 25, 50 and 75% and 0, 20, 40 and 60%, respectively) of replacement of SM by TSP were compared in each experiment. In the first experiment, the replacement of SM by TST showed a feed: gain (FG) linear decrease in the fed period of the diets and […]

One experiment was carried out to evaluate the partial substitution of soybean meal (FS) by others byproducts from soybean, obtained by different kinds of processing, as well as to compare these byproducts among themselves, as a protein source in the diets for piglets weaned at 21 days of age. With this aim, four treatments were compared: T1 – control diet, in which soybean meal was the only protein source; T2, T3 and T4 – 50% of the FS from control […]

A trial was carried out to evaluate the broiler chicks performance fed with increasing sunflower meal levels. A total of 1200 one-day-old chicks were allotted in a completely randomized design with six treatments, four replicates and 50 birds by experimental unit. The treatments consisted on a corn, soybean meal based control diet (RT) and five others with 10, 20, 30, 40 and 50% of soybean meal protein replacement by sunflower meal protein. A quadratic effect of the sunflower meal levels […]

The experiment was designed to simulate the mathematical models that relate to the phophorus (P) flow, considering the hypotheses that the endogenous phosphorus from digestive tract was absorbed in the same proportion of the dietary phosphorus and that the input and output flow of this mineral in the compartments was constant. The variables absorption, retention, endogenous P that returns to the gastrointestinal tract (GIT), dietary absorbed P, accretion, reabsorption and balance of P in bone and in soft tissues and […]

Diets composed by four different levels (0; 53; 65 and 100%) of canola meal replacing soybean meal crude protein (CP) were evaluated using foals. The diets were isoproteic (17% CP) and isocaloric (4200 kcal/kg). Sixteen Managalarga breed foals, eight males and eight females, averaging 10 months and 218 kg LW, fed a total intake of 2.5% LW on dry matter (DM) basis were used. The diet was composed by 60:40 forage to concentrate ratio. A completely block experimental design, with […]

Four male equines averaging 3.5 years old and live weight of 400-450 kg were distributed in a 4 x 4 Latin square (period x animal) experimental design. The inclusion of canola meal levels in diets were 0.0; 2.5; 4.5 and 7.0%, replacing respectively 0, 35, 65 and 100% of crude protein (CP) from soybean meal. The diets were isoproteic (13% CP) and isocaloric (4250 kcal/kg). The total fecal collection method was used for the determination of the nutrient digestibility coefficients. […]

Ninety and sixty Hubbard one-day-old broilers chicks, half male and half female, were used at the initial phase, from 1 to 21 days of age, with initial weight of 42.5 and 42.1g, respectively. The chicks were allotted to a randomized block design, with six treatments, two sexes, four replicates per sex and twenty animals per experimental unity. The treatments consisted on deficient basal diet in available phosphorus (.15%), supplemented with available phosphorus from dicalcium phosphate (0, 0.10, 0.20, 0.30, 0.40, […]

The objectives of this trial were to study the effect of supplementation with concentrate on elephant grass pasture rotationally managed on milk yield and composition and live weight changes of crossbred Holstein x Zebu cows. The treatments were: no concentrate (NC) and 2 kg concentrate/cow/day (WC). The experiment was carried out during the rainy season. The area was divided in 44 paddocks of 606 m2 each, with 22 for each treatment, with two areas replication of 11 paddocks each. Twelve […]

Thirty-three 39 crossbreed Holstein-Gyr steers were used in a research aiming to evaluate the effects of feed restriction prior to the confinement on the changes in body composition and in the net requirements of energy for maintenance and weight gain, and protein for weight gain. Thirty animals were submitted to a high grazing pressure, while the remaining nine steers had unrestricted access to forage (continuous gain group), after what, six animals from the first group and three from the second […]

Intake and apparent digestibilities of dry matter (DM), crude protein (CP), ether extract (EE), total carbohydrates (TC) and neutral detergent fiber (NDF), average daily weight gain and feed: gain of diets containing Tifton 85 bermudagrass hays with 35, 42 and 56 days of regrowth were evaluated with Nellore steers. Eighteen animals averaging 345 kg were allotted in a randomized complete blocks design with six replicates. All diets contained 60% forage and 40% of a concentrate mix based on ground corn […]