... Department of Agricultural, Food and Nutritional Science,University of Alberta, Edmonton, Alberta T6G 2P5, Canada.J.V. Nolan, School of Rural Science and Agriculture, University of NewEngland, Armidale, ... Quantitative Aspects of Ruminant Digestion and Metabolism, 2nd edition (eds J. Dijkstra, J.M. Forbes and J. France)1either major revisions of the old chapters or, in the majority of cases, com-pletely ... one-third of the rate of acetic acid. Butyric acid accounts foraround 10% of the total acid production, while valeric and isovaleric acids eachBeef and vealBuffaloGoatMutton and lambOther ruminantsNon-ruminantsNon-ruminantsBuffaloSheepGoatCowFig....