1. Determination of nitrogen requirement for microbial growth from the effect of urea supplementation of a low-N diet on abomasal N flow and N recycling in wethers and lambs.;Allen;Brit. J. Nutr.,1976
2. Proteinverdauung und -absorption bei Monogastriden und Wiederkäuern. Übers.;Armstrong;Tierernährg.,1976
3. Nitrogen utilization in cattle using a nitrogen depletion-repletion technique.;Biddle;J. Anim. Sci.,1973
4. Labile nitrogen reserves in the ruminant.;Biddle;Metabolic changes in growing cattle employing a nitrogen depletion-repletion treatment. J. Nutr.,1975