The objective of this trial was to evaluate the effect of feeding fibrolyticenzyme (cellulose and xylanase) on intake and apparent total tract digestibilityof nutrients in cattle receiving diets containing corn silage or Tifton 85 hay(Cynodon spp.). Eight animals fitted with ruminal cannulae and averaging340 kg of body weight were randomly assigned to two replicated 4 x 4 Latin squaresin a 2 x 2 factorial arrangement of treatments (forage sources with or withoutfibrolytic enzyme supplementation). The commercial enzymatic complex used, whichwas extracted from Aspergillus niger and Trichoderma longibrachiatumfungi was mixed with the forage and concentrate and supplied at a daily amountof 12 g/animal. There was no effect of enzymatic supplementation on nutrientintake for both forage sources. However, the addition of fibrolytic enzymesincreased the apparent total tract digestibilities of neutral detergent fiber(NDF), acid detergent fiber (ADF) and cellulose from 36.87, 36.21, and 46.89%to 41.19, 40.01, and 50.46%, respectively.
