Antibiotics, clenbuterol, growth hormones, even the remains of other animals, are used, and this is what the United Kingdom's contaminated feed problem from the 1990s was all about.
Sunt folosite antibiotice, clenbuterol, hormoni de creştere, chiar şi resturi de la alte animale, şi aceasta a fost cauza problemei furajelor contaminate din Regatul Unit al Marii Britanii din anii '90.