Does Maple Leaf Foods use any chemicals to raise their chickens?

At Maple Leaf, we made a choice to raise all Prime Naturally* chickens on our proprietary VEGETABLE GRAIN feed - a wholesome blend of corn, wheat, soybean, canola, and vitamins that contains NO ANIMAL BY-PRODUCTS. We made this choice to provide you with a natural, safe product that you can serve with confidence to your family. This came off their website.