The Use of “Organic Protein” in Feed Formulation on Intestinal and Ammonia Levels of Broiler

The aim of this study isto determine the effect of Organic Protein as a feed ingredient on pH, viscosity and enzyme activity in the small intestine and levels of ammonia in broiler excreta. Organic Protein is a Single Cell Protein (SCP) product name fromPT. Miwon Indonesia that has a protein content up to 40%. We conducted a field experiment and usedDOCbroilersand Organic Protein as treatment feedin aCompletely Randomized Design (CRD)comprising of 5 treatments and 6 replicates, accounting for 30 experimental units. The feed treatments werebasal feed T0, T1, T2, T3 and T4 added with Organic Protein 0%,1.5%, 3%,4.5%,and 6%, respectively. The observed variables were pH, viscosity, enzyme activity (amylase and protease) of small intestine and excreta ammonia level of broiler. The data wereanalyzed withANOVAfollowed byDuncan's Multiple Range Test (DMRT). The results showed the treatments have verysignificantlydifferent effects(P<0.01) on the amylase and proteaseactivities, but significantlydifferent effects(P>0.05) on pH, viscosity of small intestine, and ammonia levels of excreta. The use of Organic Protein at a level of 4.5% gave the best results to increase enzyme activity of amylase and protease.