The experiment was conducted to evaluate the intake and apparent digestibility of the nutrients in diets containing different levels (0, 12.0, 25.0, 38.0, and 51.0%) of forage cactus (Opuntia ficus indica Mill) in total replacement of corn (Zea mays L.) and partial of Tifton hay (Cynodon spp). Five Holstein cows were assigned to a 5×5 latin square. The animals showed an average of 583 ± 7,07 kg BW and lactation period around 110 days. Each experimental period lasted 17 days, […]

The experiment was carried out to evaluate the nutritive value of elephant grass silage wilted under the sun light for eight hours. Other treatments involved the same elephant grass without exposing to sun light but with addition of 0, 7, 14, 21, and 28% of cocoa meal (CM) at the ensilage process. The PVC silos used in the experiment measured 0.15 m of diameter and 0.30 m of height. During the ensiling process the forage was compressed until reach 500 […]

This study was carried out to determine the deposition of conjugated linoleic acid (CLA) in Nile tilapia Oreochromis niloticus fillet. Fish averaging 121.08 ± 8.48 g were distributed in four cement amianthus tank (1.0 m3 each) and hand fed to apparent satiation, two times a day for 49 days. As feed, an extruded commercial diet with 28% CP and 3000 kcal of digestible energy was utilized. A commercial CLA product (Luta-CLAâ, BASF) was added at 2% of the diet. At […]

The experiment was carried out to determine the requirement of methionine + cystine (met + cys) for broilers from 22-to-42-day-old kept under thermoneutral environment (23.5°C). A total of 240 Avian Farm male broilers, with 827 g average initial weight were distributed in a randomized experimental design with five levels of met + cys (0.659, 0.704, 0.750, 0.796, and 0.841%), six replications and eight birds per experimental unit. The increase of met + cys level influenced positively feed: gain ratio, met […]

The aim of this work was to evaluate the effects of dry corn grain or high moisture corn and calcium salts of fat acids on the performance and carcass traits of feedlot fed Nellore steers on finishing phase. Forty eight animals with 431 ± 29.8kg of initial mean body weight were fed during 70 days, with one of the four diets: MGS – basal diet containing corn silage (40%), dry corn grain (48.4%), soybean meal (7.6%), urea, amonium sulphate, mineral […]

The trial aimed to evaluate the effect of particle size (small: from 0.2 to 0.6 cm or large: from 1.0 to 2.0 cm) and cutting height (low cut: 15 cm or high cut: 39 cm) of the corn plant on the dynamics of the silage fermentation process and feed-out period. The treatments were: T1 – small particle size with low cutting height; T2 – large particle size with low cutting height; T3 – small particle size with high cutting height; […]

The experiment was carried out with the objective to evaluate the energy aport, microbial composition and efficiency of Santa Gertrudis young bulls, canulated in the rumen and duodenum, fed diets with palisadegrass hay and concentrates. A 4 x 4 latin square design was used, in which the treatments were composed by the concentrates adjusted for daily body weight gain (BWG) of 0.5 and 1 kg/animal and potential microbial fermentation (y) of 9.5 and 11 g microbial CP/MJ fermentable metabolizable energy. […]

The chemical composition, the apparent metabolizable energy (AME) and apparent metabolizable energy corrected by nitrogen (AMEn) of six feed of vegetal origins were determined by the total excreta collection method. A total of 252 male broiler chicks of the lineage Ross with 21 days of age were distributed in a completely randomized experimental design, with seven treatments (one basal reference diet and six test diets), six replicates and six birds per experimental unit. The evaluated feeds were: corn (CO), high […]

This research evaluated the addition of three levels of calcium oxide (0.5, 1.0, and 2.0%) at the sugar cane ensiling. Chemical composition was evaluated during fermentation and after silo opening. Before ensiling, increasing levels of calcium oxide reduced the NDF, ADF, and lignin concentration, and increased hemicellulose and in vitro true dry matter digestible-IVTDMD. At the silo opening, it was observed greater NDF and ADF concentration, compared to values observed before ensiling. The smallest values were observed on the treatments […]

The experiment was carried out to evaluate the effect of physical form diet (mash or pelleted) and inclusion of dehydrated egg (DEGG) up to 21 days of age on the performance and carcass characteristic of Cobb-500 strain of broiler chicks at 42 days of age. The birds with average weight of 42.94 ± 0.51 g were allotted in pens of 1.0 x 1.5 m. The experimental design was completely randomized in factorial arrangment with two levels of DEGG (0 and […]