Nonruminant Nutrition: Enzymes

J. Anim. Sci. Vol. 88, E-Suppl. 2/J. Dairy Sci. Vol. 93, E-Suppl. 1/Poult. Sci. Vol. 89, E-Suppl. 1 T203 Influences of four kinds of exogenous enzymes on performance, jejunal digesta viscosity and litter moisture of broilers fed wheat-based diet. H. Shirzadi*, H. Moravej, and M. Shivazad, University of Tehran, Karaj, Tehran, Iran. The intention of this work was to determine the effects of 4 enzyme preparations containing xylanase and β-glucanase activities on performance of broiler chicks fed wheat-based diet compare with those that fed corn-based diet without enzyme. Enzyme A provided per kilogram of diet (endo-1,4-β-glucanase activity: min 800 units; endo-1,(4)-β-glucanase activity: min 1800 units; endo-1,4-β-xylanase activity: min 2600 units), enzyme B (endo-1,3(4)-β-glucanase: 100 AGL; endo-1,4-β-xylanase: 1100 visco units), enzyme C (endo-1,4-βglucanase: 1500 BGU; endo-1,4-β-xylanase: 3600 FXU), enzyme D (1420 units; xylanases: 660 units). Two hundred thirty-four male dayold broiler chicks (Ross 308) were randomly allocated to 6 treatment groups, with 3 replicates and 13 birds per replicate in floor pen. All data was analyzed through the General Linear Model procedure of SAS for a randomized complete block design. The 6 dietary treatments consisted of a 60% corn-based ration without enzyme and 5 other rations containing 60% wheat supplemented with and without enzyme (A, B, C, and D). All parameters were measured at 42d, except viscosity (at 28d). Body weight was not significantly (P > 0.05) affected by enzyme addition. Furthermore, feed intake and feed conversion ratio were also not affected by enzyme supplementation (P > 0.05), and there were no significant differences between all treatment. In addition, litter moisture was not affected by enzyme, and these results were similar to results of corn-based diet (P > 0.05). In addition, the results demonstrated that the viscosity of jejunal contents was not significantly (P > 0.05) reduced by enzyme addition, however, this parameter had decreasing trend. The results of current study led to the conclusion that xylanase and β-glucanase activities of these enzymes did not seem to positively affect the xylans and β-glucans content of wheat used in this trial.