Faverdin et al., 1991. Livest. Prod. Sci., 27: 137-156 Document reference Faverdin, P. ; Dulphy, J. P. ; Coulon, J. B. ; Vérité, R. ; Garel, J. P. ; Rouel, J. ; Marquis, B., 1991. Substitution of roughage by concentrate for dairy cows. Livest. Prod. Sci., 27: 137-156Web http://dx.doi.org/10.1016/0301-6226(91)90092-5Citation key Faverdin et al., 1991