1. The effect of dietary protein on nitrogen metabolism, growth performance and carcass composition of finishing pigs fed ractopamine;Fed. Proc.,1987
2. Bioassay determination of the biotin content of corn, barley, sorghum, and wheat;J. Anim. Sci.,1978
3. Crop biotechnology for feed improvement,1998
4. Anonymous 1910. Proc. Am. Soc. Anim. Nutr. Ann. Mtg., Nov. 27, 1909. http://jas.fass.org/content/vol1910/issue1/
5. Anonymous 1914. Proc. Am. Soc. Anim. Prod. pp. 4–6, 7–21, 22–31. http://jas.fass.org/content/vol1914/issue1/