Carbohydrase supplementation of broiler and layer diets containing different kinds of soybean meal

Two experiments were conducted to determine the effect of the different kinds of soybean meal with 0 or 400 ppm carbohydrase. In Experiment 1, 192 eight-day old broiler chicks were randomly assigned to six treatments following a 3 x 2 factorial arrangement in a completely randomized design (CRD). In experiment 2, 48 individually caged 22-week old egg type pullets were randomly assigned to six treatments following a 3 x 2 factorial arrangement in a CRD. In both treatments, three kinds of soybean meal (U.S. Low Protein, U.S. High Protein, India Low Protein) with 0 or 400 ppm carbohydrase were used. In Experiment 1, there was significant interaction between the kinds of soybean meal and enzyme supplementation on the body weight and body weight gain of the broilers at 28 and 42 days of age. Significant interaction of the kinds of SBM and enzyme supplement was also noted on feed consumption of the broilers at 42 days but not at 28 days of age. The kind of soybean meal used in the diets did not significantly influence the body weight, body weight gain and dressing percentage of the broilers. Feed efficiency of the broilers was significantly influenced by the kinds of soybean meal used in the diets at 42 days of age. Carbohydrates supplementation of the diets showed no significant effect on all the parameters considered. The kinds of soybean meal or enzyme supplementation did not affect the income over feed and chick cost (IOFCC). In Experiment 2, the kind of soybean meal and enzyme supplementation of the layer diets showed no significant interaction on the percentage egg production, egg size, feed consumption, feed efficiency of the pullets and yolk color score and shell thickness of the eggs produced. Egg production, egg size, feed efficiency of the pullets were not significantly influenced by the kinds of soybean meal used in the diets. Feed consumption, yolk color score and egg shell thickness were significantly affected by the kind of soybean meal in the diet in some periods of the study. Carbohydrase supplementation of the diet did not significantly affect the percentage egg production, egg size, feed consumption and feed efficiency of the pullets. The kind of soybean meal or the enzyme supplement used showed no effect on the income over feed cost of the pullets (IOFC)