Feed contaminants - how big a risk are they?

or all professionals associated with the training and competition of horses under the rules and regulations of racing, the choice of which feed products to use has never been greater, and the range appears to grow on a daily basis.  This is especially true of the plethora of dietary supplements (otherwise known officially as complementary feeds) available.

Dr Catherine Dunnett and Dr Mark Dunnett (10 July 2008)