ABSTRACT Two experiments were conducted to assess the impact of an enzyme complex (EC) on the metabolizability coefficients of dry matter (MCDM), crude protein (MCCP), and ether extract (MCEE) and on the nitrogen-corrected apparent metabolizable energy (AMEn) of corn gluten meal, soybean protein concentrate, dried bovine plasma, and poultry offal meal. Additionally, the experiments aimed to evaluate how EC affected broiler performance. In experiment I, 720 day-old Cobb 500® broilers were assigned to a completely randomized design using a 4 […]

ABSTRACT The objective of this study was to evaluate the effects of supplementation of two different enzymatic complexes, fibrolytic (NSPases) or amylolytic (EXP3066) enzymes, on growth performance, digestibility, behavior, and carcass characteristics of feedlot cattle. Thirty-six ½ Angus yearling bulls with an average initial weight of 391±5.0 kg were used in this experiment blocked by weight in a completely randomized design divided in three treatments: control, NSPases, and EXP3066. The basal diet was composed of 85% whole corn grain and […]

The objective of this trial was to evaluate the effect of feeding fibrolytic enzyme (cellulose and xylanase) on intake and apparent total tract digestibility of nutrients in cattle receiving diets containing corn silage or Tifton 85 hay (Cynodon spp.). Eight animals fitted with ruminal cannulae and averaging 340 kg of body weight were randomly assigned to two replicated 4 x 4 Latin squares in a 2 x 2 factorial arrangement of treatments (forage sources with or without fibrolytic enzyme supplementation). […]

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 […]

The present work was designed to verify the effect of the use of phytase and xylanase upon the performance and bone deposition of minerals in broiler diets containing 15% of rice bran, low available phosphorus and without supplementation of iron, zinc, copper and manganese. The phytase utilized was the Natuphos 5000 and the xylanase Avizyme 1300. The experimental design was the completely randomized and the analysis of variance in a 4×2+1 factorial scheme. The control diet was made up of […]