Effect of Converting Lysine in Barley and Canola Meal into Homoarginine on Nutrient Composition and Ileal Amino Acid Digestibilities in Growing Pigs

摘要

Effects of guanidinating lysine in barley (B) and canola meal (CM) on nutrient composition and ileal amino acid (AA) digestibility were investigated. Guanidination did not change nutrient composition of B (P > 0.10) but it increased levels of crude protein (CP) (38.4 vs. 49.0%), crude fibre (10.2 vs. 16.0%), acid detergent fibre (30.0 vs. 43.4%) and neutral detergent fibre (29.8 vs. 49.4%) in CM [P < 0.05). Guanidination did not affect (P > 0.05) apparent ileal digestibility of dry matter (DM), CP and AA in four 33.6 kg barrows fitted with a simple T-cannula at the terminal ileum and fed a barley-canola meal diet. True ileal lysine, threonine and isoleucine digestibilities were 88.1%, 97.1% and 89.0%, respectively.