Effects of mixtures of tropical legumes with contrasting tannin contents as supplements to low-quality grass diets on ruminal fermentation in vitro - Hess, H.D.; Stuerm, CD; Tiemann, Tassilo T.; Lascano Aguilar, Carlos Eduardo; Kreuzer, M. (Universität Hohenheim, Tropenzentrum, Centre for Agriculture in the Tropics and Subtropics, 2005)