Yang et al., 2001. J. Dairy Sci., 84: 2203-2216 Document reference Yang, W. Z. ; Beauchemin, K. A. ; Rode, L. M., 2001. Effects of grain processing, forage to concentrate ratio, and forage particle size on rumen pH and digestion by dairy cows. J. Dairy Sci., 84: 2203-2216Web https://doi.org/10.3168/jds.S0022-0302(01)74667-XCitation key Yang et al., 2001