Effect of Supplementation of Non-Starch Polysaccharide Hydrolyzing Enzymes on Nutrient Utilization and Economics of Broilers Reared on Sub-Optimal Diets

Abstract

Three hundred one-day old Ven-Cobb straight run commercial broiler chicks were supplemented with non starch polysaccharide (NSP) hydrolyzing enzymes at 1X higher concentration (HC) viz. (xylanase, s-D-glucanase, cellulase, mannanase and pectinase @ 2400, 4800, 1800, 4800, and 2400 IU/kg respectively. The similar enzyme combination was supplemented @ 4800,9600,3600,9600 and 4800 IU/kg respectively as 2X (HC) to the corn + soybean meal based having sub-optimal diets (-100 Kcal). Similarly the diets were supplemented with NSP hydrolyzing enzymes at 1X lower concentrations (LC) viz. (xylanase, s-D-glucanase, cellulase, mannanase and pectinase @ 400, 240, 200, 200, and 400 IU/kg respectively. The same NSP hydrolyzing enzyme combination was supplemented @ 800,480,400,400 and 800 IU/Kg respectively as 2X (LC). The birds were weighed, wing banded and randomly distributed in to six experimental groups, with ten replicates and five birds in each replicate to assess the effect of the NSP hydrolyzing enzyme combinations on nutrient utilization and economics of broiler production. The protein and energy utilization had shown significant variation (P