PSII-10 - Impact of nutrient density diet with or without emulsifier supplementation on apparent total tract and ileal digestibility in broilers

Abstract: In broiler production the addition of fat is practiced to increase energy density; however, the digestibility of fat is lower during the starter phase. Low fat digestibility in broiler is associated with less production of lipases and bile salts during early life. Supplementation of emulsifier can increase the active surfaces of fats to allow the lipase activity which breakdown the triglyceride molecules into lipid micelles. Several researchers showed that the supplementation of emulsifiers in the diet of broilers increase fat digestibility and growth rate but very limited studies were exists on analyzing the effect of different nutrient density diet with or without emulsifier addition on apparent total tract digestibility (ATTD) and apparent ileal digestibility (AID). Thus, we initiate this study in Ross broilers. n= 60 (14-days old) birds were randomly allocated into 4 treatments: High and low nutrient density diets supplemented with or without 0.05% of emulsifier. Each treatment has 5 replicates and 3 chicks per cage. Birds were allowed to fed experimental diets for 14 days (phase 1 days 1 to 7 and phase 2 days 8 to 14). ATTD and AID samples were collected during days 7 and 14. All data were analyzed in a 2 × 2 factorial design using the generalized linear model procedure of SAS to determine the effect of emulsifier administration in high- and low-nutrient-density diets. Variability in the data < 0.05 was considered as significant. ATTD of dry matter, nitrogen, energy, and crude protein and essential amino acid of lysine, valine, tryptophan and total essential amino acid and non-essential amino acid of proline and alanine, AID of dry matter and energy and essential amino acid of histidine and tryptophan and non- essential amino acid of proline and alanine were significantly increased (P < 0.05) in chickens fed high nutrient density with emulsifier. Therefore, we infer that, feeding high nutrient density diet with 0.05% emulsifier to broilers would be a better option to enhance their ATTD and AID.