1. AOAC, 1990. Official Methods of Analysis, 15th ed., Association of Official Analytical Chemists, Arlington, VA
2. Ruminal degradation of dried brewers grains, wet brewers grains, or soyabean meal;Armentano;J. Dairy Sci.,1986
3. Intestinal digestibility of rumen undegraded N of concentrates measured by the mobile nylon bag technique;Beckers;Anim. Feed Sci. Technol.,1996
4. Boza, J., Ferrando, G., 1989. Situación actual en el estudio y aprovechamiento de los subproductos en España. (Present situation in the study and use of by-products in Spain). In: Consejeria de Agricultura y Pesca de la Junta de Andalucia (Ed.), Nuevas fuentes de alimentos para la producción animal III. pp. 9–70 (in Spanish)
5. Effect of heat treatment on ruminal degradation and escape, and intestinal digestibility of cottonseed meal protein;Broderick;J. Nutr.,1980