Apparent ileal amino acid digestibility in sorghum, corn and wheat in diets for growing pigs

摘要

An experiment was carried out to compare apparent ileal digestibility (AID) of amino acids (AA) in corn, sorghum and wheat corn in growing pigs. Six pigs with canulaes in terminal ileum were used in three experimental periods, according to a replicated 3 X 3 Latin Square design. Each one of the experimental diets was formulated with the problem ingredient, and supplemented with vitamins and minerals. The content, intake, and ileal flow of AA were higher (p<0.05) in wheat than in corn and sorghum. Except for leucine, the average AID of the essential AA was higher (p<0.05) in wheat than in sorghum and corn. The AID of lysine, threonine, and methionine were higher (p<0.05) in wheat than in sorghum (91.6, 30.7, and 40.0 percent, respectively) and corn(21.1, 16.7, and 11.0 percent, respectively). The values of AID, total and digestible content, and ileal flow of essential AA suggest that their nutritional value is higher for wheat as compared to sorghum (40.7 to 91.6 percent), and corn (11.0 to 21.6percent).