The objective of this study was to evaluate intake, digestive kinetics and nutrient digestibility in horses fed diets supplemented with soybean oil inclusion. Fifteen horses were used in a randomized complete design with three diets and five replications. The experimental diets were formulated from a control diet (without soybean oil) with the addition of 8.5% and 19.5% soybean oil. The experiment lasted for 34 days, 30 days for the horses to adapt to the diets and four days for feces […]

An experiment was conducted to evaluate the performance and composition of litter, tibia, liver and excreta of broiler chicks at different phases using different levels of available phosphorous (Pd) and the enzyme phytase. One thousand and two hundred one-day-Cobb-male chicks were used, distributed in a randomized complete design, using a 4 × 3 factorial arrangement, consisting of four available phosphorus levels and three phytase levels – 0, 500 and 1,000 FTU phytase/kg of diet with four replications of 25 birds […]

The effects were assessed of including phytase and its nutritional matrix in diets containing sorghum on the performance of the birds, egg quality, intake and phosphorus excretion and retention in laying hens. One hundred and eighty laying hens were arranged in a randomized complete design in a 2 × 2 + 1 factorial arrangement with two phytase levels (0 and 500 FTU/kg diet), two levels of corn replacement for sorghum (50 and 100%) and a control diet (without phytase and […]

With the objective of determining the nutritional requirement of digestible lysine for brown-egg laying hens from 79 to 95 weeks of age, an experiment was carried out using 180 commercial Lohmann Brown laying hens, distribuited in five treatments (0.555; 0.605; 0.655; 0.705 and 0.755%), six replications and six birds birds/replication. The feed intake and the food conversion per dozen of eggs were not influenced by the lysine levels. There was a positive linear effect on lysine intake and quadratic on […]

An experiment study was carried out to establish the nutritional requirement of methionine + cystine (met + cyst) for brown-egg laying hens, in the second production cycle. One hundred and eighty Lohmann Brown birds from 79 and 95 weeks of age were used fed a base diet deficient in met + cyst, supplemented with 0.00; 0.053; 0.108; 0.161 and 0.214% DL-Methionine (98%), providing 0.490; 0.542; 0.594; 0.648 and 0.698% digestible met + cyst. The levels supplementation of met + cyst […]

The objective of this study was to evaluate the chemical composition, metabolizable energy, the digestibility coefficients of dry matter, crude protein and the amino acids contained in yeast extract supplied to broiler chickens. Two metabolism assays were carried out. In the first assay, 200 14-day old Cobb-500® male broiler chickens were used kept in metallic cages in a randomized complete design in groups of 10 birds per experimental unit. The total excreta collection method was used to determine the apparent […]

The objective of this study was to evaluate carcass characteristics of steers and cull cows from two genetic groups, under different feeding frequencies. Twelve steers and twelve cull cows were used and each category consisted of six animals 5/8 Charolais (C) – Nellore (N) and six animals 5/8NC, under three feeding frequencies: twice a day (7 a.m. and 7 p.m.); three times a day (7 a.m., 1 p.m. and 7 p.m.) and four times a day (7 a.m., 11 a.m., […]

This study was carried out to evaluate the effect of the use of supplementation in pasture cultivated with Avena strigosa (black oats), Lolium multiflorum (ryegrass) and Vicia sativa L. (common vetch) on the composition and somatic cells count (SCC) of Jersey cow milk. Eight cows of the Jersey breed were separated by milk production, lactation period and live weight and were randomly blocked into two homogeneous groups (one with supplementation and other only on pasture), in a randomized complete design. […]

The objective of this study was to assess the effects of including animals or vegetable fats and mineral on the acceptability, nutrient digestibility and triglyceride plasma concentrations and cholesterol in horses. Four foals aged 13 to 16 months were used receiving diet containing grass hay and concentrate. The experimental design was a Latin Square; using orthogonal contrasts. The acceptability was not influenced by the quantity nor the type of oil added to the diets. The smallest dry matter (DM) digestibility […]

The objective of this study was to evaluate the replacement of soybean meal by cottonseed meal in the diet of dairy cows fed diets based on spineless cactus. Five Girolando lactating cows were used, with average live weight of 490 kg and average production of 11.5 kg of milk/day, distributed in a 5 × 5 Latin square design (5 animals, 5 treatments and 5 experimental periods). Each experimental period lasted 15 days, 10 days being for the adaptation of the […]