... in the low protein diets with such balanced L-Threonine content, L-Threonine can optimize growth performance and decrease the ... after fermentation. Technically, L-Threonine, the complementary of L-Lysine, is added based on the volume of L-Lysine in the feed. The ... after fermentation. Technically, L-Threonine, the complementary of L-Lysine, is added based on the volume of L-Lysine in the feed. The ...