1. Edwards, H.M., and Denman, F. (1975)Poult. Sci. 54, 1230–1238.
2. Van Middle Koop, J.H., Kuit, A.R., and Zegwaard, A. (1977) inGrowth and Poultry Meat Production (Bourman, K.N. and Wilson, J.R., eds.) pp. 131–143, British Poultry Science Ltd., Edinburgh.
3. Cherry, J.A., Ghitelman, M.Z., and Siegel, P.B. (1978)Poult. Sci. 57, 171–179.
4. Hood, R.L., and Pym, R.A.E. (1982)Poult. Sci. 61, 121–127.
5. Calabutta, D.F., Cherry, N.A., Siegel, P.B., and Gregory, E.M. (1983)Poult. Sci. 62, 1830–1837.