1. Agricultural Research Council (ARC). 1981.The Nutrient Requirement of Pigs, 307Slough: CAB.
2. Andersson, K. 1980.Studies on cross breeding and carcass evaluation in pigs, 126Uppsala: Dept. Animal Genetics and Breeding, Swedish Univ. Agric. Sciences. Diss. Report No. 46
3. AOAC. 1984.Official Methods of Analysis, 14th edn., 1141Washington, DC: Association of Official Analytical Chemists.