Effect of exogenous fibrolytic enzyme on ruminal fermentation and digestibility of alfalfa and rye-grass hay fed to lambs.

摘要: This experiment was carried out to study the effect of a directly fed exogenous fibrolytic enzyme on intake and digestion DM, OM, protein, NDF, ADF, hemicellulose alfalfa ryegrass hay by sheep. Four diets were randomly assigned four ruminally cannulated lambs using 4 x Latin square design, repeated in time, with factorial arrangement (2 2) diets: 1) hay; + enzymes (enzyme); 3) 4) enzyme. Lambs consumed more DM OM from than (P < 0.001). The ADF not different between hays, but NDF lower for For both increased 0.01), as well CP 0.05); however, changed. Alfalfa had higher apparent digestibility 0.001), hemicellulose. CP, 0.05), 0.10) alfalfa. Also, improved N balance because retained 0.05). 0.05) total VFA concentration (3 6 h) hays. Results this trial indicate that may change ruminal fermentation, intake, forages nutritive value.