... small intestine of calves and Chen et al. (1990)found that 91% of an infused source of microbial purines was digested in thesmall intestine of lambs. Knowledge of nucleic acid digestion and ... 1944;Hungate et al. , 1960; Bath et al. , 1962).2. Those employing tracers and based on the application of compartmentalanalysis to interpret isotope dilution data (e.g. Bergman et al. , 1965; Weller et al. , ... Pilgrim, A.F. and Jones, G.B. (1967) The rates of production of volatile fatty acids in the rumen. IV. Individual and total volatile fatty acids.Australian Journal of Agricultural Research 18,...