Page 167 of articles about nutrition
Ileal digestibility and endogenous flow of minerals and amino acids: responses to dietary phytic acid in piglets
Decreasing dietary particle size of lupins increases apparent ileal amino acid digestibility and alters fermentation characteristics in the gastrointestinal tract of pigs
Effect of supplementing zinc oxide and biotin with or without carbadox on nursery pig performance
Dietary and endogenous amino acids are the main contributors to microbial protein in the upper gut of normally nourished pigs

