Experimental diets were also formulated on a true digestible amino acid basis using true digestible amino acid values for feed ingredients listed by a leading amino acid producer (Ajinomoto Heartland Lysine, Chicago, IL), except for CDDGS.
The levels of true digestible amino acids in CDDGS were calculated using the true digestibility coefficients listed by Ajinomoto Heartland LLC (2004)and the amino acid values determined through analysis of the
CDDGS sample.