The growing need to diversify animal agriculture in the UK has increased interest in the production of Fibre and meat from goats. Protein supplements are among the most expensive of feed ingredients in animals ration and the efficiency of protein utilization is of considerable importance in the economical production of animal products such as meat, Fibre or milk. Previous studies (e.g. Huston etal, 1971; Huston, 1980 in the USA; Shahjalal et al, 1990a in the UK) have suggested that protein supplementation can influence growth rate and fibre characteristics of Angora goats. The aim of the work reported here was to provide more detailed information on the effect of level of protein supplementation on growth performance, carcass yield and fibre characteristics of British Angora goats.