The experiment was carried out to determine digestible methionine + cystine: digestible lysine (Met + Cys/Lys) ratio for barrows selected for deposition of lean meat in the carcass supplemented with ractopamine (RAC) in the finishing phase. Sixty-four barrows with 84.68 ± 1.34 kg BW was allotted to an experimental randomized block design, fed diets containing four Met + Cys/Lys ratio (0.54, 0.58, 0.62 and 0.66) supplemented with ractopamine, eight replications, during a period of 28 days. Met + Cys/Lys did […]

Four hundred birds Hubbard linage with average weight of 675g were distributed to completely randomized block design, based in birds he weight, with five treatments and four replications. The experimental diets were constituted of five metabolizable energy levels (2,800, 2,900, 3,000, 3,100 and 3,200 kcal of ME/kg ration) formulated to attend the nutritional requirements, except for metabolizable energy. The increase of energy was obtained by the addition of soybean oil. The variance and regression analysis was made, associating the energy […]

The fatty acids composition of broiler tissue was evaluated using two hundred male Cobb chicks. They were raised from 22 days of age with experimental diets based on corn and soybean meal supplemented with 4 or 8% of passion fruit peel and 4 or 8% of passion fruit seed. A completely randomized experimental design was used with a 2 x 2 factorial arrangement with an additional treatment (Control, 0% of passion fruit byproducts), with four replications and ten birds per […]

The objective of this study was to evaluate the use of corn grains in different forms (corn dry grain, high moisture corn silage, moisturized corn silage) in the diet of confined lambs, and its possible effects on the qualitative and quantitative characteristics of the carcass. Twenty male Bergamacia x Corriedade lambs were used. The animals were confined and fed ad libitum, assigned to five treatments consisted of dry corn: high moisture corn silage or moisturized corn silage (0:100, 50:50, 100:0). […]

The objective of this work was to evaluate the weight gain, feed efficiency and carcass characteristics of dairy steers. Sixteen Holstein dairy steers with initial average age and weight of 20 months and 202,0 kg were used. The animals were divided into four groups. One group of animals was slaughtered at the beginning of the trial (AI) and three groups were ad libitum fed (AL-1, AL-2 and AL-3) and they were slaughtered when the individual weights of 250.0, 300.0 and […]