tl:In vivo and in vitro Protein and AminoAcid Digestibility of Soybean and RapeseedProducts in Pig Diets

摘要

The apparent ileal protein and amino acid digestibility was determined in soybean meal and rapeseed products by in vivo and in vitro procedures. The relationship between in vitro predicted and in vivo values of protein digestibility was closer for soybean (r2 = 0.59) than for rapeseed products (r2 = 0.33). The highest correlation was found for lysine [r2 = 0.74) in mixtures containing soybean meals. It was not possible to predict with satisfactory precision the apparent ileal digestibility of protein and amino acid in rapeseed products using in vitro technique. Studies on factors affecting the in vitro values of protein digestibility continue.