195 Comparison of 1,3-diacylglycerol and 1,2-diacylglycerol as exogenous emulsifiers on growth performance and nutrient digestibility in growing pigs.

Abstract

The dietary fat contents of food of animal origin have been studied extensively since it was found that they have an important impact on nutrient digestibility in growing pigs.The objective of the present study was to compare the effects of 1, 3-diacylglycerol (DAG) and 1, 2-diacylglycerol as exogenous emulsifiers on growth performance, nutrient digestibility and blood profiles in growing pigs. A total of 75 crossbred [(Yorkshire × Landrace) × Duroc] growing pigs with an average initial body weight (BW) of 24.81 ± 1.64 were randomly allotted to 3 dietary treatments using a randomized complete block design based on initial BW and sex in a 6-week feeding trial. Each treatment consisted of 5 replicate pens with 5 pigs per pen. The dietary treatments included: 1) CON, corn soybean-meal based basal diets/control; 2) CON+0.20% 1,2-DAG; 3) CON+0.20% 1,3-DAG; The data were analyzed using the GLM procedureof SAS (SAS Institute, 1996) in a randomized complete block design. Pen served as the experimental unit for analysis of growth performance and nutrient digestibility data. Pre-planned contrast was used to test the following: 1) the individual effect of basal diet CON versus 1,2-DAGversus 1,3-DAG). Dietary supplementation of 1,3-DAG showed higher (P < 0.05) average daily gain (ADG) and lower (P < 0.05) feed conversion ratio (FCR) compared with basal diet during the overall experiment period, while dietary supplementation of 1,3-DAG showed slight difference in overall ADG and in FCR compared with 1, 2- DAG supplemented diet. Dietary supplementation of 1,3-DAG showed higher (P