Augmenting Feeding Value of Rice Distillers Dried Grain with Solubles Through Dietary Addition of Enzymes in Broilers

Abstract

Background: Substitution of expensive protein sources like soybean meal with lower cost ingredient like rice distillers dried grain with solubles (rDDGS) would reduce the cost of the feed. Various enzymes supplementation may be used to increase their inclusion level. Methods: An in-vivo study of 42 days was undertaken (n= 384) in broilers divided into 12 dietary treatments as per 3x4 factorial design. Two levels of rDDGS consisted of 12.5 and 15% without and with three different types of enzymes xylanase, protease and multienzymes were used to find out substract specific enzyme. Result: Overall the growth performance of broiler chicken was significantly lower at 15% rDDGS level as compared to control and 12.5% rDDGS level. However, it was significantly (P less than 0.01) improved by supplementation of any of the three enzymes (xylanase, protease and multienzymes) in 12.5 and 15% rDDGS groups. Nitrogen retention, dry matter and energy metabolizability were significantly (P less than 0.01) improved in all enzymes supplemented groups. The cost of feed per kg live weight and meat yield was significantly (P less than 0.01) lower at 12.5% rDDGS with enzymes supplementation. Thus, it is concluded that the enzymes supplementation can increase inclusion level of rDDGS from 12.5 to 15% for economic broiler production.