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Effects of Multiple-Enzyme Mixtures on Growth Performance of Broilers Fed Corn-Soybean Meal Diets

Bi Yu^* and T. K. Chung

^* Department of Animal Science,National Chung-Hsing University,250 Kuo-Kuang Road, Taichung, Taiwan
Roche Vitamins Asia Pacific Pte Ltd., Singapore

Correspondence: Bi Yu, E-mail: byu{at}dragon.nchu.edu.tw

Two experiments were conducted under hot and cool seasons to investigate the effects of multiple-enzyme mixtures on the growth performance of broilers fed reduced energy corn-soybean meal diets. Broilers responded to enzyme supplementation with greater magnitude in the hot season (experiment 1) than in the cool season (experiment 2). Adding adequate activity levels of -amylase, ß-glucanase, and xylanase to broiler starter and grower corn-soybean diets with a 3% reduction in dietary ME allowed full restoration of growth performance of broilers comparable to those fed the adequate energy positive control diet regardless of season.

Key Words: enzyme • broiler • corn • soybean meal

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