In vitro digestibility of individual amino acids in rumen-undegraded protein: The modified three-step procedure and the immobilized digestive enzyme assay

S.E. Boucher, S. Calsamiglia, C.M. Parsons, M.D. Stern, M. Ruiz Moreno, M. Vázquez-Añón, C.G. Schwab
journalOfDairyScience, Journal of Dairy Science Vol. 92, Issue 8, p3939–3950
Published: August 1, 2009