1. Agricultural Research Council. (1965). The Nutrient Requirements of Farm Livestock, No. 2, Ruminants. HMSO, London.
2. Black, D. H. (1976). Nutritional studies withBos taurus andBos indicus calves. PhD thesis, Edinburgh University.
3. Bryant, J. M., Foreman, C. F., Jacobson, N. L. &McGilliard, A. D. (1967).Journal of Dairy Science,50, 1645–1653.
4. Holmes, C. W. &Davey, A. W. F. (1976).Animal Production,23, 43–53.
5. Johnson, P. T. C. &Elliott, R. C. (1972).Rhodesian Journal of Agricultural Research,10, 125–133.