1. Freeman , D. W. Potter , G. D. Kreider , J. L. Schelling , G. T. Anderson , J. G. 1981 Nitrogen balance in mature horses at varying levels of exercise Proceedings, Seventh equine Nutrition and Physiology Symposium 94 96
2. Dietary fat and exercise conditioning effect on metabolic parameters in the horse;Hambleton;J. anim. Sci.,1980
3. Harvey , A. L. Thomas , B. H. Culbertson , C. C. Collins , E. V. 1939 The effect of limited feeding of oats and timothy hay during work on the nitrogen balance of draft geldings Proceedings, American Society of Animal Production 94