Agricultural Research Council. 1965. The Nutrient Requirements of Farm Livestock. No. 2, Ruminants. Agricultural Research Council. London
Baker, R. D., Ball, C., Kilkenny, J. B. and Walsh, A. 1972. Suckled calves. Beef Prod. Handb., No. 3. Meat and Livestock Commission, Bletchley, Milton Keynes.
Ball, C., Broadbent, P. J. and Dodsworth, T. L. 1971. Energy and protein supplements for straw-based winter diets for beef cows. Anim. Prod. 13: 237–244.
Broster, W. H. 1972. Effect on milk yield of the cow of the level of feeding during lactation. Dairy Sci. Abstr. 34: 265–288.
Brumby, P. J., Walker, D. K. and Gallagher, R. M. 1963. Factors associated with growth in beef cattle. N.Z. Jlagric. Res. 6: 526–537.
Christian, L. L., Hauser, E. R. and Chapman, A. B. 1965. Association of preweaning and postweaning traits with weaning weight in cattle. J. Anim. Sci. 24: 652–659.
Deutscher, G. H. and Whiteman, J. V. 1971. Productivity as two-year-olds of Angus-Holstein crossbreds compared to Angus heifers under range conditions. J. Anim. Sci. 33: 337–342.
Drennan, M. J. 1971. Single suckled beef production. 1. Influence of stocking rate during the grazing season. creep grazing of calf and double-suckling on liveweight changes and milk production of cows. Ir. J. agric. Res. 10: 287–295.
Drewry, K. J., Brown, C. J. and Honea, R. S. 1959. Relationships among factors associated with mothering ability in beef cattle. J. Anim. Sci. 18: 938–946.
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.
Gleddie, V. M. and Berg, R. T. 1968. Milk production in range beef cows and its relationship to calf gains. Can. J. Anim. Sci. 48: 323–333.
Heyns, J. 1960. The growth of the Afrikaner calf in relation to the production and composition of the milk of its dam. II. The milk production of the dam and growth of the calf. S. Afr. J. agric. Sci. 3: 517–530.
Kropp, J. R., Stephens, D. F., Holloway, J. W., Whiteman, J. V., Knori, L. and Totusek, R. 1973, Performance on range and in drylot of two-year-old Hereford, Hereford × Holstein and Holstein females as influenced by level of winter supplementation. J. Anim. Sci. 37: 1222–1232.
Lamond, D. R., Holmes, J. H. G. and Haydock, K. P. 1969. Estimation of yield and composition of milk produced by grazing beef cows. J. Anim. Sci. 29: 606–611.
Lawes Agricultural Trust. 1980. Genstat V, Mark 4.03. Rothamsted Experimental Station, Harpenden, Hertfordshire.
Lowman, B. G., Edwards, R. A., Somerville, S. H. and Jolly, G. M. 1979. The effect of plane of nutrition in early lactation on the performance of beef cows. Anim. Prod. 29: 293–303.
Lowman, B. G., Scott, N. A. and Somerville, S. H. 1973. Condition scoring of cattle. Bull. E. Scotl. Coll. Agric., No. 6.
Meat and Livestock Commission. 1973. Breed comparisons in suckler herds. Beef Improvement Services, Meat and Livestock Commission, Bletchley, Milton Keynes.
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.
Patterson, H. D. 1968. Serial factorial design. Biomelrika 55: 67–81.
Russel, A. J. F., Peart, J. N., Eadie, J., MacDonald, A. J. and White, I. R. 1979. The effect of energy intake during late pregnancy on the production from two genotypes of suckler cow. Anim. Prod. 28: 309–327.
Rutledge, J. J., Robison, O. W., Ahlschwede, W. T. and Legates, J. E. 1971. Milk yield and its influence on 205-day weight of beef calves. J. Anim. Sci. 33: 563–567.
Somerville, S. H. 1977. Nutrition of the lactating beef cow. Ph.D Thesis, Univ. Edinburgh.
Somerville, S. H. and Lowman, B. G. 1980. A comparison of machine-milking and the calf-suckling technique as methods of measuring the milk yield of beef cows. Anim. Prod. 30: 365–372.
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. Bull. E. Scotl. Coll. Agric, No. 4.
Wilson, L. L., Gillooly, J. E., Rugh, M. C., Thompson, C. E. and Purdy, H. R. 1969. Effects of energy intake, cow body size and calf sex on composition and yield of milk by Angus-Holstein cows and the preweaning growth rate of progeny. J. Anim. Sci. 28: 789–795.
Wood, P. D. P. 1969. Factors affecting the shape of the lactation curve in cattle. Anim. Prod. II: 307–316.