Effect of multi-enzyme preparation on composition of carbohydrates and dry matter digestibility of grain mixtures based on wheaten with inclusion of various amounts of wheaten bran and oats
To grain mixture based on wheaten, wheaten bran or oats were added at the ratio 7:1; 6:2 and 5:3 respectively. To digest this mixture in vitro, the multi-enzyme composition (MEC) СХ-3 was used, with following enzymatic activities, U/g: cellulase - 120, exo-β-gluconase - 200, xylanase - 250, amylase - 350, pectin liase - 1500. Preparation was added at the amounts 0,05; 0,10 and 0,15%, by mass. It was established that in grain mixtures based on forage wheaten, whole oats, wheaten bran, the use of MEC provides effective hydrolysis of polysaсcharides with formation of low molecular mass fractions of carbohydrates, which provides increase in nutrient digestibility, increase in dry matter digestibility and in the level of energy nutrition of animals. Enzymatic digestion of feeds makes it possible the ratio of whole oats and wheaten bran to by elevated in rations up to 30%. The optimal dose of adding MEC to grain mixtures is 0.1% by mass.