The objective of this experiment was to verify the effect of weaning age and ewe supplementation on the production of super-young lambs and on the reproductive cycle of dams. Sixty-six Hampshire Down ewes, ranging between 3 and 4 years of age, were kept with their lambs on grass pasture. All lambs were creep fed. The ewes were either supplemented (n=34) or not (n=32) during lactation. The lambs were randomly allocated to four treatments: T1 – weaned from supplemented dams at […]

The objective of this study was to evaluate apparent digestibility of nutrients, nitrogen balance and plasma urea nitrogen in diets with different levels of hydrolyzed feather meal inclusion. Five wethers with 50 kg of live weight were used. A 5 x 5 Latin square experimental design was used and the treatments were as following: 0, 25, 50, 75 and 100% replacement of soybean meal plus urea by hydrolyzed feather meal. Total feces and urine collection was used for apparent digestibility […]

Carcass characteristics, cut dressing and body constituents were determined according to the different dietary energy levels. Eighteen Santa Inês sheep (averaging live weight of 20 kg and six months old) were full fed diets with 2.43, 2.66 and 2.88 Mcal of metabolizable energy (ME)/kg of dry matter (DM). The animals were slaughtered when reached 33 kg live weight (LW). A randomized block design, with six replicates, was used. Linear decreasing effect was observed for loss in fast (LF) and linear […]

Two experiments were carried out to determine the chemical composition, nutrients digestibility and digestible energy and protein of spray-dried egg (OP) and to study the performance and plasma and blood components of weanling pigs fed diets containing OP. In the Experiment I, eight pigs were used for digestibility assay. The animals were assigned to two treatments and four replications/treatment. The treatments consisted of a basal diet and test diet (70% of basal diet + 30% of OP). The method was […]

The experiment was designed to study the phosphorus (P) flow between the physiologic or anatomical compartments of horses and to evaluate the P absorption and availability in horse diets. The experimental treatments were constituted by different sources of phosphate: “Tapira”, “Patos de Minas”, dicalcium and bone flour. The model, deterministic and compartmental, was adapted from Aubert and Milhaud model, in which the digestive tract and the bone and soft tissues represented the compartments in bi-directional flow with the blood. The […]

The objective of this study was analyze the colour, pH, weight loss by cooking (PPC) and shear force (FC) of the Longissimus dorsi (LD) and semimembranosus (SM) muscles of Santa Inês (SI x SI) and Texel x Santa Inês (T x SI) lambs, slaughtered at different live weights. Thirteen males and fourteen females were slaughtered at 15, 25, 35 and 45 of live weight. The carcasses were kept during twenty-four hours at 2ºC and during that time the pH was […]

The intakes of dry matter (IDM), metabolizable energy (IME), ether extract (IEE), crude protein (ICP), neutral detergent fiber (INDF), acid detergent fiber (IADF) and organic matter (IOM) and the daily weight gain (WG), in kg/day, and feed conversion (FC) were determined to evaluate the effect of three dietary energy levels, for sheep. Eighteen Santa Inês sheep (averaging live weight of 20 kg six months old) were full fed diets with 2.42, 2.66 and 2.83 Mcal of metabolizable energy (ME)/kg of […]

An experiment was conducted using elephant grass (Pennisetum purpureum Schum.) cv. Cameroon, with the purpose of determining the quantitative and qualitative characteristics of effluent released, correlating this with levels of pressure and the quality of silage. The material with 13% of dry matter was ensiled in experimental plastic silos. The levels of pressure were: 356.67; 446.67; 531.33; 684.00 and 791.00 kg/m3. The effluent of silages with high moisture content was collected and measured during seven days. In silages with high […]

The experiment was carried out with the objective of evaluating the ileal endogenous losses of amino acids in function of different fiber levels inclusion in a free protein diet. Were used eight crossbreed swine, castrated males, averaging 50.17 ± 4.10 kg initial weight, submitted previously to the simple T canula surgery implantation, allotted to a randomized blocks design, with four treatments, four replicates and one animal per experimental unit. The treatments consisted in a free protein diet with four levels […]

The objective of this experiment was to evaluate the effect of broiler strain and dietary lysine level on breast meat yield and quality. Two thousand two hundred and fifty day old straightrun chicks from commercial strains named A, B and C were reared in a factorial 3×3 arrangement (strain and dietary lysine level) with five replicates of 50 birds per pen. The broiler chikens were feed ad libitun with a corn and soybean diet withing the following lysine levels: 1.18, […]