1. Alexander, G., McCance, I., Watson, R.W., 1956. The relation of maternal nutrition to neonatal mortality in Merino lambs. Proc. III. Int. Cong. on Anim. Reprod. Cambridge, UK, pp. 5–7.
2. Allden, W.G., 1979. Feed intake, diet composition and wool growth. In: Black J.L., Reis, P.J. (Eds.), Physiological and Environmental Limitations To Wool Growth. University of New England Publishing Unit. Armidale, Australia, pp. 61–78.
3. AOAC 1985. Official Methods of Analysis 13th (Ed.). Association of Official Analytical Chemists, Arlington, VA, pp. 129–145.
4. Milk secretion studies with New Zealand Romney ewes;Barnicoat;J. Agric. Sci. (Camb.),1949
5. Brand, T.S., De Villiers, T.T., 1989. Production norms and techniques for adapted sheep breeds under dryland conditions in the western and southern parts of the Cape, Department of Agriculture: Western Cape, Private Bag, X1, Elsenburg 7607, South Africa, pp 221–225 (in Afrikaans).