Kawas et al., 1990. J. Anim. Sci., 68: 4376-4386 Document reference Kawas, J. R. ; Jorgensen, N. A. ; Lu, C. D., 1990. Influence of alfalfa maturity on feed intake and site of nutrient digestion in sheep. J. Anim. Sci., 68 (12): 4376-4386Web http://www.journalofanimalscience.org/content/68/12/4376Citation key Kawas et al., 1990