A demonstration was conducted with nursery pigs by using diets supplemented with Mecadox, no supplementation, and Echinacea. The study lasted for 4 weeks. The nursery pigs were weighed and the feed intake was measured. The results suggested that Echinacea does not suppress feed intake or the weight gain in nursery pigs compared with the no supplement or Mecadox diets. Half of the pigs were inoc...