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2. Agricultural Research Council (1984) Report of the protein group of the ARC working party on the nutrient requirements of ruminants. In The Nutrient Requirements of Ruminant Livestock, Suppl. 1, Commonwealth Agricultural Bureaux, London
3. Rumen metabolism;Baldwin;Journal of Animal Science,1983
4. Response of cows to a reduction in dietary crude protein from 17% to 13% during early lactation;Barney;Journal of Dairy Science,1981
5. Effect of dietary concentrate on in situ dry matter and nitrogen disappearance of a variety of feedstuffs;Barrio;Journal of Dairy Science,1986