Effect of protease in diets containing winged bean seeds (Psophocarpus tetragonolobus) on growth performance of broiler chickens

Abstract

This study aims to determine the effect of adding protease enzyme in diets that contains different levels of winged bean seeds on the growth performance of broiler chickens. In this study, a total of 240 one-day-old chicks were randomly grouped within six treatments and four replicates in a 3×2 factorial arrangements. The first factor was the level of winged bean seeds at 0%, 2.5%, and 5%, while the second was the enzyme treatment with and without protease. The results showed that the additive protease interaction and level of winged bean seeds on the diet had a significant effect on the feed conversion ratio value (P<0.05). Meanwhile, on the feed inateke, final, and body weight gain had no significant effect (p>0.05). Furthermore, the protease treatment significantly decreased feed intake in 35-day old broilers. (P<0.05). Based on these results, the addition of protease enzyme at the levels has the potential to offset the effect of winged bean seeds on growth performance of broiler chickens.