Agricultural Research Council. 1965. The Nutrient Requirements of Farm Livestock. No. 2, Ruminants. Agricultural Research Council, London.
Bines, J. A. 1976. Factors influencing voluntary food intake in cattle. In Principles of Cattle Production (ed. Swan, H. and Broster, W. H.), pp. 287–305. Butterworth, London.
Broster, W. H. 1970. Feeding over the lactation cycle. In Dairy Nutrition, pp. 47–61. US Feed Grains Council, London.
Cottrill, B. R., Osbourn, D. F., Wilkinson, J. M. and Richmond, P. J. 1976. The effect of dietary pH and nitrogen supplementation on the intake and utilization of maize silage by young calves. Anim. Prod. 22: 154–155 (Abstr.).
Huber, J. T., Lichtenwalner, R. E. and Henderson, H. E. 1974. Direct addition of ammonia solutions to corn silage fed to dairy cattle. J. Dairy Sci. 57: 263–266.
McLeod, D. S., Wilkins, R. J. and Raymond, W. F. 1970. The voluntary intake by sheep and cattle of silages differing in free-acid content. J. agric. Sci., Camb. 75: 311–319.
Ministry of Agriculture, Fisheries and Food, Department of Agriculture and Fisheries for Scotland, and Department of Agriculture for Northern Ireland. 1975. Energy allowances and feeding systems for ruminants. Tech. Bull. 33. Her Majesty's Stationery Office, London.
Moe, P. W., Tyrrell, H. F. and Flatt, W. P. 1971. Energetics of body tissue mobilization. J. Dairy Sci. 54: 548–553.
Payne, J. M., Dew, Sally M., Manston, R. and Faulks, Margaret. 1970. The use of a metabolic profile test in dairy herds. Vet. Rec. 87: 150–158.
Phipps, R. H. and Cramp, D. G. 1976. The supplementation of maize silage for an autumn-calving dairy herd. Anim. Prod. 23: 191–196.
Reid, J. T. and Robb, J. 1971. Relationships of body composition to energy intake and energetic efficiency. J. Dairy Sci. 54: 553–564.
Roy, J. B., Balch, C. C., Miller, E. L., Ørskov, E. R. and Smith, R. H. 1977. Calculation of the N-requirement for ruminants from nitrogen metabolism studies. In Proc. 2nd int. Symp. Protein Metabolism and Nutrition, Flevohov. Eur. Ass. Anim. Prod. Publ. No. 22, pp. 126–129.
Tayler, J. C. and Aston, K. 1976a. Milk production from diets of silage and dried forage. 1. Effects of methods of processing dried grass and of including barley in the supplementation of grass silage given ad libitum. Anim. Prod. 23: 197–209.
Tayler, J. C. and Aston, K. 1976b. Milk production from diets of silage and dried forage. 2. Effect of ensiling ryegrass cut at two levels of digestibility and given ad libitum with supplements of dried grass pellets. Anim. Prod. 23: 211–221.
Tayler, J. C. and Wilkins, R. J. 1976. Conserved forage—complement or competitor t o concentrates. In Principles of Cattle Production (ed. Swan, H. and Broster, W. H.), pp. 343–364. Butterworth, London.
Thomas, C. and Wilkinson, J. M. 1974. The voluntary intake of maize silage treated with ammonia. Proc. Br. Soc. Anim. Prod. (New Series) 3: 102–103 (Abstr.).
Thomas, C. and Wilkinson, J. M. 1975. The utilization of maize silage for intensive beef production. 3. Nitrogen and acidity as factors affecting the nutritive value of ensiled maize. J. agric. Sci., Camb. 85: 255–261.
Wernli, C. 1971. Nutritional studies on feed supplements for grass silage. Ph.D. Thesis, Univ. Reading.
Wilkins, R. J., Fenlon, J. S., Cook, J. E. and Wilson, R. F. 1978. A further analysis of relationships between silage composition and voluntary intake by sheep. In Proc. 5th Silage Conf., Hannah Res. lnst., Ayr, pp. 34–35.
Wilkins, R. J., Hutchinson, K. J., Wilson, R. F. and Harris, C. E. 1971. The voluntary intake of silage by sheep. I. Interrelationships between silage composition and intake. J. agric. Sci., Camb. 77: 531–537.