An experiment in the biotherium of Nutrition Department/UFV aiming to evaluate the effects of rotten corn and the quality of your protein for growing rats. Thirty Wistar female rats early weaned, with 22 days of age and average initial weight of 53.9 ± 3.2 g were assigned to a randomized design. With five treatments and six repetitions with one animal by experiment unity. The treatments consisted in a basal ration (positive control), like a casein standard, four rations with corn […]

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 […]

An experiment was carried out to estimate the relations between broiler carcass weight and thighs+drumsticks, breast+bone+skin, and breast meat by the linear model. Eight hundred and sixty and four male poultry of Arbor Acres strain, from 22 to 42 days of age, were assigned to a completely randomized design in 3x4factorial scheme. Corn and soybean meal based diets were prepared to contain 2900 kcal ME and 15.43; 17.26; 19.60; and 22.60% CP; 3,100 kcal ME and 16.49; 18.45; 20.95; and […]

This research was carried out to evaluate the use of pre-starter diets, through different periods to broilers with different first day weights. Two hundred and eighty one-day old chicks were allotted in brooded battery cages, in a completely randomized design, with six treatments and four replicates in a factorial design 2 x 3, (chicks weight – higher or lower than 40 g, and pre-starter periods of feeding, 1 to 7; 1 to 10 and 1 to 14 days). The performance […]

Two trials were conducted to evaluate the effects of digestible lysine levels in diets maintaining or not the relationship of amino acids, on performance of broilers from 1 to 21 days, kept under heat stress. A completely randomized experimental design was used in both trials. In the trial 1, the broilers were allotted in five treatments (0.92; 0.98; 1.04; 1.10 and 1.16% of lysine in conventional diets), eight replicates and ten broilers per replicate. In the trial 2, the broilers […]

Two trials were conduced to determinate the requirement of digestible lysine of broilers from 22 to 42 days, feeding diets maintaining or not the relationship of amino acids, kept under heat stress. A completely randomized experimental design was used in both trials. In trial 1, the broilers were allotted in five treatments (lysine levels in conventional diets) and six replicates with seven broilers in each. In trial 2, the broilers were allotted in four treatments (diets with different lysine levels, […]

The experiment aimed to evaluate animal performance and economic return in oats (Avena strigosa Schreb) plus Italian ryegrass (Lolium multiflorum Lam) pasture subjected at three systems of utilization. The treatments used were: 1. pasture of oat + Italian ryegrass + 300 kg/ha of nitrogen-‘Nitrogen’; 2. pasture of oat + Italian ryegrass + supplementation-‘Supplement’ and 3. pasture of oat + Italian ryegrass + arrowleaf clover-‘Clover’. The experimental animals were ninety-four beef heifers of Charolais breed and Charolais-Nellore crosses, with initial weight […]

The objective of this work was to study the carcass and meat characteristics of Mediterranean buffalos, finished in feedlot for 112 days and fed with 33% concentrate and 67% chopped sugar cane or corn silage diets, containing 12% of crude protein. Twelve buffalos steers, with 20 months of age, were used. Slaughter weight, hot carcass weight and cold carcass weight were similar between the treatments, being, respectively, 363.7, 181.8 and 179.9 kg, for animals fed with chopped sugar cane, and […]

This trial was run at Estación Experiment Agropecuária of INTA (EEA-INTA, Rafaela), Argentina. Thirty-two high producing Hostein-Argentina dairy cows were used in early lactation, aiming to evaluate blood parameters at two levels of protected fat (0 and 400 g/cow/day) and two types of alfalfa (fresh or haylage). All cows were submitted to a pre-trial period of fifteen day in two groups: with and without fat supplementation. The animals, post-partum, were allocated to paddocks with green or pre-dried alfalfa, comprising, then, […]

The objective of this research was to evaluate the effects of ingestion rations with different phosphorus levels, by goats in growth, on metabolism and endogenous losses of phosphorus. Eighteen Saanen animals, males, castrated, from 4 to 5 months of age, body weight average of 25 ± 1.2 kg, were housed, for 45 days, in metabolism cages. The animals received rations with three levels of P (0.08, 0.15 and 0.38% in dry matter) and similar levels of crude protein, metabolizable energy […]