Russell, J.R., D. Farnham, R.K. Berryman, M.J. Hersom, A. Pugh and K. Barrett. 2000 Beef Research Report -Iowa State University. Research update on Bt corn silage. Faust, M. 1999. Four State Applied Nutrition and Management Conference.
Study finds no Bt in milk.
Faust, M. and L. Miller. Fall Special Livestock Edition. Iowa State University Extension, Ames, Iowa. Utilization of Bt corn residue and corn silage for growing beef steers. C.T. Milton, T.J. Klopfenstein and J.F. Beck.