Agricultural Research Council. 1965. The Nutrient Requirements of Farm Livestock. No. 2, Ruminants. Agricultural Research Council, London.
Balch, C. C. 1972. Milk composition. In Handbuch der Tierernährung (ed. Lenkeit, W., Breirem, K. and Crasemann, E.), Vol. 2, pp. 259–265. Parey, Hamburg.
British Standards Institution. 1963. Methods for the chemical analysis of liquid milk and cream. BS 1741. British Standards Institution, London.
British Standards Institution. 1969. Gerber method for the determination of fat in milk and milk products. BS 696, Part 2, Methods. British Standards Institution, London.
Broster, W. H. 1972. Effect on milk yield of the cow of the level of feeding during lactation. Dairy Sci. Abstr. 34: 265–288.
Economides, S. J., Miller, T. B., Topps, J. H., Gelman, A. L. and Keith, D. G. 1973. A preliminary study of the milk production, bodyweight changes and some blood characteristics of underfed beef cows. Br. vet. J. 129: 63–72.
Federation Of United Kingdom Milk Marketing Boards. 1976. UK Dairy Facts and Figures. Federation of United Kingdom Milk Marketing Boards, Thames Ditton, Surrey.
Flatt, W. P., Moe, P. W., Munson, A. W. and Cooper, T. 1969. Energy utilization by high producing dairy cows. II. Summary of energy balance experiments with lactating Holstein cows. In Energy Metabolism of Farm Animals (ed. Blaxter, K. L., Kielanowski, J. and Thorbek, Greta), pp. 235–251. Oriel Press, Newcastle upon Tyne.
Foley, R. C, Bath, D. L., Dickinson, F. N. and Tucker, H. A. 1972. Dairy Cattle: Principles, Practices, Problems, Profits. Lea and Febiger, Philadelphia, Pa.
King, J. O. L. 1968. The relationship between the conception rate and changes in body-weight, yield and SNF content of milk in dairy cows. Vet. Rec. 83: 492–494.
Lowman, B. G., Scott, N. and Somerviixe, S. 1973. Condition scoring of cattle. E. Scotl. Coll. Agric, Bull. No. 6.
Meat And Livestock Commission. 1974. Results for suckler herds 1974. Rec. Rep. No. 35. Meat and Livestock Commission, Bletchley, Buckinghamshire.
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.
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.
Somerville, S. H. 1977. Nutrition of the lactating beef cow. Ph.D.Thesis, Univ. Edinburgh.
Somerville, S. H., Lowman, B. G. and Deas, D. W. 1979. The effect of plane of nutrition during lactation on the reproductive performance of beef cows. Vet. Rec. 104: 95–97.
Stewart, A. G. D., Runcie, K. V., Lowman, B. G., Rowbottom, J. D. and Smith, R. S. 1972. Suckled calf production. E. Scotl. Coll. Agric, Bull. No. 4.
Van Es, A. J. H. and Nijkamp, H. J. 1969. Energy, carbon and nitrogen balance experiments with lactating cows. In Energy Metabolism of Farm Animals (ed. Blaxter, K. L., Kielanowski, J. and Thorbek, Greta), pp. 209–212. Oriel Press, Newcastle upon Tyne.
Wood, P. D. P. 1969. Factors affecting the shape of the lactation curve in cattle. Anim. Prod. 11: 307–316.
Wood, P. D. P. 1976. Algebraic models of the lactation curves for milk, fat and protein production, with estimates of seasonal variation. Anim. Prod. 22: 35–40.