Effects of DDGS nutrient composition (reduced-oil) on digestible and metabolizable energy value and prediction in growing pigs

.......................................................................................................................................... 2 Introduction .................................................................................................................................... 2 Procedures ...................................................................................................................................... 3 Animal Management .................................................................................................................. 3 Diets ............................................................................................................................................ 3 Sample Collection ....................................................................................................................... 3 Chemical Analysis and Calculations ............................................................................................ 4 Statistical Analysis ....................................................................................................................... 4 Results and Discussion .................................................................................................................... 5 General and Compositional Evaluation .................................................................................. 5 DE and ME Prediction Estimates ............................................................................................. 6 Digestibility Coefficients ......................................................................................................... 9 Table 1. Ingredient composition of basal diet, as‐fed basis ......................................................... 10 Table 2. Methods of analysis ........................................................................................................ 11 Table 3. Composition of corn basal diet utilized in Exp. 1 and 2, DM basis ................................. 12 Table 4. Composition of corn distillers dried grains with soluble used in Exp. 1 , DM basis ........ 13 Table 5. Composition of corn distillers dried grains with solubles used in Exp. 2, DM basis ....... 15 Table 6. Apparent total tract digestibility and energy concetration of corn DDGS, Exp. 1 ......... 17 Table 7. Apparent tital tract digestibility and energy concentration of corn DDGS, Exp. 2 ......... 18 Table 8. Stepwise regression for DE in corn DDGS, Exp. 2 ............................................................ 20 Table 9. Stepwise regression equations for ME in corn DDGS, Exp. 2 ........................................... 20 Table 10. Stepwise regression equations for DE as a percent of GE in corn DDGS, Exp. 2 .......... 22 Table 11. Stepwise regression equations for ME as a percent of DE in corn DDGS, Exp. 2 ......... 23 Table 12. Stepwise regression equations for GE in corn DDGS, (Exp. 1 and Exp 2.) .................... 24 Literature Sited ............................................................................................................................. 24