1. Alexander, T., Lysons, R. J., Elliott, L. M. and Wellstead, P. D. (1973a). Equipment for rearing gnotobiotic lambs. Lab. Anim., 7, 195–217.
2. Alexander, T., Lysons, R. J., Elliott, L. M. and Wellstead, P. D. (1973b). Techniques for rearing gnotobiotic lambs. Lab. Anim., 7, 239–54.
3. Anderson, K. L., Nagaraja, T. G., Morrill, J. L. et al. (1987). Ruminai microbial development in conventionally or early-weaned calves. J. Anim. Sci., 64, 1215–26.
4. Baker, F. and Hobson, P. N. (1952). The selective staining of intact and damaged starch grains with safranin O and Niagara Blue 4B. J. Sci. Food Agric., 3, 608–12.
5. Barr, M. E. J., Mann, S. O., Richardson, A. J. et al. (1980). Establishment of ureolytic staphylococci in the rumen of a gnotobiotic lamb. J. Gen. Microbiol, 49, 325–30.