The EFSA Journal. (2006) Vol.339 p 1 – 25
“…bovine bones used as an animal feed additive or as fertiliser”
Bone meal constitutes approximately 1% of cattle feed by weight. Some bone meal is derived from cattle. What is the risk of BSE transmission?
In the worst case considered in this report:
In a beef cattle population of ~ 25 million this might be expected to give rise to on average 225 infected cattle per year.
None of the scenarios produced an estimate lower than one case per year.