Why data can’t always be trusted, even in pigs

Does eating margarine cause your marriage to go downhill? Unlikely. There’s a difference between correlation and causation, explains Dr Casey Bradley, AB Vista, in this expert opinion. Writing this month’s column, I find myself walking a knife-edge, and what a sharp one it’s proving to be! On one side is my training as a scientist and my work in the feed additive sector, using trial results and research data on a daily basis to help customers improve efficiency, boost performance and inc