Agricultural Research Council. 1965. The Nutrient Requirements of Farm Livestock. No. 2, Ruminants. Agricultural Research Council, London.
Arnold, G. 1966. Age, pasture conditions and the performance of grazing sheep. Proc. Aust. Soc. Anim. Prod. 6: 213–221.
Blaxter, K. L. and Clapperton, J. L. 1965. Prediction of the amount of methane produced by ruminants. Br. J. Nutr. 19: 511–522.
Blaxter, K. L., Clapperton, J. L. and Martin, A. K. 1966. The heat of combustion of the urine of sheep and cattle in relation to its chemical composition and to diet. Br. J. Nutr. 20: 449–460.
Blaxter, K. L., Clapperton, J. L. and Wainman, F. W. 1966. The extent of differences between six British breeds of sheep in their metabolism, feed intake and utilisation, and resistance to climatic stress. Br. J. Nutr. 20: 283–294.
Blaxter, K. L. and Wainman, F. W. 1964. The utilisation of the energy of different rations by sheep and cattle for maintenance and for fattening. J. agric. Sci., Camb. 72: 351–357.
Blaxter, K. L., Wainman, F. W. and Wilson, R. S. 1961. The regulation of food intake by sheep. Anim. Prod. 3: 51–61.
Blaxter, K. L. and Wilson, R. S. 1963. The assessment of a crop husbandry technique in terms of animal production. Anim. Prod. 5: 27–42.
Campling, R. C., Freer, M. and Balch, C. C. 1962. Factors affecting the voluntary intake of food by cows. 3. The effect of urea on the voluntary intake of oat straw. Br. J. Nutr. 16: 115–124.
Campling, R. C. and Murdoch, J. C. 1966. The effect of concentrates on the voluntary intake of roughages by cows. J. Dairy Res. 33: 1–11.
Commonwealth Bureau of Pastures and Field Crops. 1961. Research techniques in use at the Grassland Research Institute, Hurley. Bull. Commonw. Bur. Past. Fid Crops, Hurley, No. 45.
Crabtree, J. R. 1967a. Studies on the voluntary intake and utilisation by sheep of diets of roughage and concentrate. Ph.D. Thesis, Univ. Coll. of North Wales.
Crabtree, J. R. 1967b. The effect of age and previous nutrition on the voluntary feed intake of roughage-concentrate diets by sheep. Anim. Prod. 9: 275 (Abstr.).
Davies, P. J. 1966. A note on energy intake and nitrogen balance of fattening lambs given all-concentrate diets. Anim. Prod. 8: 341–344.
Egan, A. R. 1965. Nutritional status and intake regulation in sheep. II. The influence of sustained duodenal infusions of casein or urea upon voluntary intake of low protein roughages by sheep. Aust. J. agric. Res. 16: 451–462.
Greenhalgh, J. F. D. and Reid, G. W. 1967. Separating the effects of digestibility and palatability on food intake in ruminant animals. Nature, Land. 214: 744.
Holmes, W., Jones, J. G. W., Drake-Brockman, R. M. and White, N. 1965. The feed intake of milk cows. 1. Intake of winter rations during pregnancy and lactation and the influence of change to pasture. Anim. Prod. 7: 27–37.
Holmes, W. and MacLusky, D. S. 1955. The effect of pasture management methods and supplementary feed on the production and the feed consumption of dairy cows. In Animal Production from Grass. Publ. Eur. Assoc. Anim. Prod., No. 6, pp. 29–34.
Kendall, M. G. 1957. A Course in Multivariate Analysis. Griffin, London.
Lamming, G. E., Swan, H. and Clarke, R. T. 1966. Studies on the nutrition of ruminants. 1. Substitution of maize by milled barley straw in a beef fattening diet and its effects on performance and carcass quality. Anim. Prod. 8: 303–311.
Ministry of Agriculture, Fisheries and Food. 1955. Fertilizers and Feeding Stuffs Act, 1926. Reprinted 1955. Her Majesty's Stationery Office, London.
Murdoch, J. C. 1967. Factors affecting the voluntary intake of silage and hay. J. Br. Grassld Soc. 22: 95–99.
Reid, J. T. 1956. Some nutritional effects of varying concentrate-roughage ratios in relation to feed input-milk output by dairy cows. Mem. Cornell Univ. agric. Exp. Stn, No. 344.
Thomson, D. J. 1966. The voluntary intake of hay and silage by sheep. Anim. Prod. 8: 351 (Abstr.).
Williams, G. L. and Andrews, R. P. 1966. Fattening store lambs on hill farms. Agriculture, Land. 73: 387–390.