Effects of intact and extracted lipid in diets fed to growing pigs on the digestible energy content and the digestibility of various chemical constituents

Abstract

The effects of dietary lipid source (corn germ vs. corn oil) on digestible energy (DE) and apparent total tract digestibility (ATTD) of various chemical constituents were evaluated in diets fed to growing pigs. Thirty barrows were allotted to one of five treatments with six replicates per treatment. The five diets were comprised of a corn-based basal diet with 15.64 MJ/kg of GE, LCO and LCG diets (containing 1% extracted corn oil or 2% corn germ, respectively) were formulated to maintain 16.00 MJ/kg of GE, as well as HCO and HCG diets (containing 2% extracted corn oil or 12% corn germ, respectively) were formulated to maintain 16.94 MJ/kg of GE. The differences in ATTD of NDF and ADF were neither observed between the LCO and LCG diet nor between the HCO and HCG diet. LCO diet had greater DE and ATTD of GE and EE (p