The experiment was carried out to evaluate the performance, carcass characteristics, and the economical viability of a steer feedlot fed Tanzania and Marandu grass silage, with 0% and 10% of pelleted citrus pulp (PCP), compared with corn silage. Experimental surface silos (12 × 5 × 1 m) were used. The data were analyzed according to a completely randomized experimental design with eight treatments (diets) and six replications (animals). The experimental diets were formulated using Tanzania or Marandu grass silages, with […]

The experiment evaluated the chemical composition, in vitro DM digestibility (IVDMD), and fermentative characteristics of elephant grass silages with different coffee hull levels. The elephant grass presented 17.2% of dry matter (DM), cut with 45 days of growing. The coffee hull addition levels were 0, 6, 12, 18, and 24%, in fresh matter basis (weight/weight) with four replications per treatment. The material was ensiled in cylindrical plastic silos. In the ensiling process, the forage packing density was 500 kg/m3. It […]

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 present experiment was carried with the objective to evaluate the Saccharomyces cerevisiae (SC) as probiotic in rations for Nile tilapia (Oreochromis niloticus) fingerlings submitted to a sanitary challenge. A total of 60 fingerlings with 30 days old, weighing 0.45 ± 0.02 g and 3.10 ± 0.14 cm were distributed to a completely randomized design with two treatments and six replications in 12 aquariums of 50 L. As a sanitary challenged each aquarium daily received, during the experimental period, an […]

This trial was conducted to study the use of mannanoligosaccharide (standard and concentrate) on chicks diets. One thousand and eigthy 1-d male chicks (Ross) averaging 42 g of initial BW were assigned to a completely randomized experiment with nine replications of 20 birds per experimental unit. The following treatments were analyzed: control, antibiotic (avilamicine), mannaoligosaccharide high concentration (MOS AT), mannaoligosaccharide standard (MOS ST), MOS AT + antibiotic, and MOS ST + antibiotic. The birds were reared in wood powder, reused […]

The objective of this trial was to evaluate the chemical composition and fungal microbiota of different proportions of elephantgrass and mesquite pod silages: 100:0, 67:33, 34:66, and 0:100, respectively. A complete randomized design with four replications per treatment was used. The material was ensiled in PVC silos and remained sealed during a 120-days period. After opening the silos, silage samples were collected followed by fungi isolation and identification and determination of the chemical composition of the silages. Addition of mesquite […]

The experiment was carried out to evaluate the effects of levels (10, 20, 30 and 40%, based on fresh matter) of coffee hulls added to elephantgrass at ensilage on the bromatological composition, in vitro dry matter digestibility (IVDMD) of the resulting silage and the production and composition of the silo effluent. Twenty cylindrical plastic silos measuring 0.25 m diameter x 0.75 m height were used. A complete randomized design was used with four replications. The results demonstrated coffee hulls efficiency […]

The objectives of this trial were to evaluate the efficacy of oregan extract (OE), as growth promoter, in the diets, on performance, immune system (bursa Fabricius weight and volume, spleen weight and thymus weight), anatomic-physiological parameters of the gastrointestinal tract (villy height, crypta depth and villy:crypta ratio), caecum microbiological analysis, and duodenum and caecum pH. One thousand and fourty male Cobb 500 chicks, in two growing phases (1 to 21 and 1 to 42 days old) were randomly assigned to […]

The objetive of this work was to evaluate the effect of the addition of different enzyme levels plus yeast in the cattle diet on apparent nutrient digestibility and cattle performance in feedlot. Is was used 18 crossbred bulls (Taurino x Zebuino) of milk dairy origin with average LW of 190±10 kg and age of 12 months and 27 steer of the Guzerá breed with LW and age of 325 kg and 27 months. The levels of enzyme plus yeast were […]

One experiment was conducted to evaluate the effects of five levels of coffee hulls (0, 8.7, 17.4, 26.1, and 34.8 kg/100 kg of fresh forage) on the bromatologic composition and IVDMD of elephantgrass silage. Fifteen plastic silos measuring .25 of diameter x .75 of height were used. In the ensiling process the forage received a pressure of 550 kg/m³. The results showed that the percentage of dry matter increased linearly with increasing of coffee hulls. It was estimated an increasing […]