Protein hydrolysis to peptides and free amino acids and the apparent absorption of amino acids (AAaa) were evaluated in different segments of carp intestine. The AAaa analysed using Cr2O3 as a marker indicated that 73.2% of the amino acids were absorbed in the first 20% of the intestinal tract and 5.3 and 21.5, respectively, in the following segments (20% of gut length). Except for methionine a...