Three experiments were carried out to evaluate the performance and nutritional value of the extruded corn for broilers from one to 21 days of age. In the first experiment, the metabolism of pre-gelatinized corn, corn starch and corn germ meal was assessed by the total excreta collection method from 4 to 7 days of age and values of apparent (AME) and corrected metabolizable energy (CAME) and the results were, respectively: 3370, 3379.7, 3259.1 kcal/kg de AME and 3299.8, 3369.7, 3051.6 […]

The objective of this study was to evaluate different textures and storage forms of corn in piglet diets. Two experiments were conducted, one of which tested digestibility of nutrients and the other diet performance. In the digestibility trial, 24 crossbred (Landrace X Large White) barrows with an initial weight of 18.7 ± 1.5 kg were used. They were kept in metabolic cages in a randomized block design using the factorial arrangement 2 X 2 (type of corn – dent and […]

Four foals, sired by the same stallion, aged between 10 and 12 months and 270 ± 9.80 kg average weight, were alloted in a 4 X 4 balanced Latin Square design. The effects were analyzed of the inclusion of the levels of 5, 10, 15 and 20% of soybean oil in the concentrate on the acceptability, nutrient digestibilities and on total cholesterol plasma concentrations and its fractions: very low density lipoprotein (VLDL-C), low-density lipoprotein (LDL-C), high-density lipoprotein (HDL-C) and total […]

In the early 1970’s research was initiated by the cooperative USDA-ARS and University of Nebraska grass breeding program to develop perennial grasses adapted to the mid-continental USA with improved forage quality. The initial breeding and animal evaluation work focused on switchgrass (Panicum virgatum) but has since expanded to several other warm-and cool-season perennial grasses. The in vitro dry matter digestibility (IVDMD) test was selected as the measure of forage quality that was used in the breeding work because of its […]

Selection of potential ingredients for feed formulation for any fish species requires knowledge of the apparent digestibility coefficients of energy and nutrients. The nutritive value of various ingredients has been investigated in Brazil and alternative source is must support similar fish performance and no adverse effects on fish health and the environment. Several factors can affect nutrient digestibility and the apparent digestibility coefficients of wide range of feed ingredients should be used for more accurate and economical feed formulation.

The grazing management system based on the intensive pasture utilization result in a high animal and area yield. In order to that to be possible, it should be used a management criteria aiming to control, simultaneously the quality and the amount of forage, maintaining the sustainability of the system. The grazing intensity is dynamic, it never keeps the same status, it can be changed with the animals rate intake, and also by the plants growth, changing every hour and day, […]

This study was conduced to evaluate the energy sources, rich in starch or fiber in multiples supplements on performance and nutritional characteristics of finishing crossbred steers in the dry/rainy transition season, grazing Brachiaria decumbens Stapf. The experimental area was divided into 5 paddocks with 2.0 ha each, with dry matter availability of 4.309,4 kg/ha. Twenty-four castrated crossbred steers were used, initially 24 month old and 314.46 kg. For each animal, one of the five treatments was randomly applied: mineral mixture […]

The effect of the addition of phytase enzyme on performance and metabolism of laying hens was evaluated. Three hundred and sixty Bovans Goldline hens were allotted to a completely randomized design, with 12 replicates of 6 birds per unit and 5 experimental treatments as follows: T1 = positive control (PC), T2 = Negative control (NC by 0.15% phosphorus available), T3 = NC + 200 FTU of phytase, T4 = NC + 400 FTU of phytase, T5 = NC + 600 […]

The effect of the addition of multienzymatic complex on performance and metabolism of laying hens was estimated. Two hundred and sixteen Bovans Goldline hens were assigned to a completely randomized design, with 12 replicates of 6 birds per unit and three experimental treatments arranged as follows: positive control (PC), negative control (NC), NC + Rovábio® Max (100 g/t). The positive control diets were formulated to contain adequate levels of nutrients according to the recommendations of the Brazilian tables. Diets of […]

The objective of this study was to evaluate the levels of concentrate for growing calves. Four Holstein × Brahman crossbred calves with average age of 7 months and 155 kg of body weight were used, distributed into one Latin square design (4 × 4). The animals were fed ad libtum in the form of complete diet containing levels of 20, 40, 60 and 80% of concentrate on the dry matter basis (DM). The diets were composed of Cynodon dactylon hay, […]