Tightening up on in-feed medication.
D000821:Animal Feed / Q000592:standards*; D000818:Animals; D005503:Food Additives / Q000592:standards*; D007886:Legislation, Veterinary; D004364:Pharmaceutical Preparations / Q000008:administration & dosage*; D006113:United Kingdom
D005503:Food Additives; D004364:Pharmaceutical Preparations