Ten boars with an initial body weight of 52.2 ± 9.0 kg were
surgically fitted with a T-cannula in the distal ileum and were allotted to a 10×10 Latin
square design with 10 diets and 10 periods. Each period consisted of 3-day adaptation
and 2-day sample collection periods. Results indicated that the concentrations of CP and
AA varied among corn sources from different origins, and those of lysine and tryptophan
had coefficient of variation of 16.3 and 24.0%, respectively