Two experiments were carried out to determine the nutritional requirement of calcium for broilers in growing (22 to 42 days), and finishing (43 to 53 days) phases. Three hundred and sixty Avian Farm broiler chicks (180 from each sex) were used in both trails. The first experiment lasted 21 days and the second one, 10 days. A completely randomized design was used in both experiments, with six treatments, six replications and 10 birds per experimental unity (five males and five […]

Two hundred and sixteen crossbred gilts with high genetic potential for lean meat gain, with average initial weight of 66.3 ± 4.24 kg and final weight of 95.5 ± 2.05 kg, were used to evaluate the effect of lysine levels on animals performance in the finishing phase. A randomized block design was used with four treatments, 27 replicates and two animals per experimental unit. Treatments were constituted of isoenergy diets, with different levels of total lysine (0.80, 0.90, 1.00, and […]

Ninety and six crossbred gilts with high genetic potential for lean meat gain, with average initial weight of 65.93 ± 2.78 kg and final weight of 105.50 ± 2.18 kg, were used to evaluate the effect of nutrition plans, based on the effects of lysine levels on the carcass traits of gilts in the finishing phase. A randomized block design, with four treatments, 12 replicates and two animals per box, used as experimental unit, was used. The treatments were constituted […]

A total of 192 weaning crossbred Landrace x Large White piglets weighing 6.9 kg and 23 days old was used to determine the effect of addition of flavours in simple or complex diet on the performance, blood parameters and the organs weight of piglets. A randomized block design, in a 2 x 3 factorial scheme, with two diets (simple or complex) and addition or not of two flavours (F1 and F2), was used. It was observed that the flavour addition […]

The objective of this work was to evaluate the effect of different commercial strain (conformation versus conventional) on performance, carcass yield and parts, physical determinations (thickness, width and length of breast fillet) and breast meat quality (weight loss for cooking, shear force and pH) in broilers with 35, 42 and 49 days of age. Two thousand and four hundred day-old chicks were assigned to a randomized 5×2 factorial design, with five strains (conformation: A, B and C; and conventional D […]

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 present study evaluated the influence of genotype and rearing system on the performance of alternative lines of broiler chickens. Two experimental lines (Caipirinha and 7P) and two commercial lines (Label Rouge and Paraíso Pedrês) were reared under intensive or semi-intensive (access to the pasture area after 21 d of age) in an experiment with eight treatments, four replicates and 35 birds per experimental unit. Corn-soybean meal based feed and water were offered ad libtum in the pen area only, […]

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 […]

Sixty crossbred piglets, with average initial weight of 15.1 ± 0.50 kg and 56 ± 3.6 days old were used to evaluate the dietary crude protein levels, for barrows in the initial growing phase, under low temperature environment (15ºC). The animals were allotted to a randomized blocks design, with five treatments, six replications and two animals per experimental unit. The treatments consisted of diets with 17.0, 18.0, 19.0, 20.0, and 21.0% crude protein (CP). The dietary crude protein levels affected […]

Two experiments were carried out, with the aim of evaluating the use of corn processed or not by extrusion, in the feeding of growing rabbits. In the experiment 1, 21 White New Zealand rabbits, 12 males and 9 females, with 55 days of age, were used on digestibility assay, with the aim of determining the nutritional value of corn, extruded or not. The rabbits were distributed in a completely randomized design with three treatments and seven replications, with one reference […]