Clark et al., 1997. J. Dairy Sci., 80: 675-680 Document reference Clark, P. W. ; Armentano, L. E., 1997. Replacement of alfalfa neutral detergent fiber with a combination of nonforage fiber sources. J. Dairy Sci., 80: 675-680Web https://doi.org/10.3168/jds.S0022-0302(97)75986-1Citation key Clark et al., 1997