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2. Nitrogen metabolism in the rumen;Buttery,1982
3. Effect of readily-available carbohydrates in purified sheep rations on cellulose digestibility and nitrogen utilization;Chappell;J. Anim. Sci.,1968
4. Effectos sobre digestion ruminal de la adicion de harina de maíz a una dieta de heno de baja calidad;Cohen,1983
5. Effects of alkali treatment of forage and concentrate supplementation on rumen digestion and fermentation;Dixon;Trop. Anim. Prod.,1984