What livestock product is made by feeding fermented crops?

The correct answer is silage, which is a livestock product created through the anaerobic fermentation of crops, typically at a high moisture content. This process preserves the nutrients in the crops and helps provide a high-quality feed source for livestock during periods when fresh pasture may not be available, such as winter months.

Silage is commonly made from grasses, corn, or other forage crops that are harvested and then chopped and compacted into a silo or stack. The fermentation process results in lactic acid bacteria developing, which helps to reduce spoilage and enhances the flavor of the feed for the animals.

The other choices represent different forms of animal feed but do not involve fermentation. Hay is dried grass or legume harvested for animal feed, dried grains are processed grains with low moisture content often used in concentrated feed mixes, and meal refers to ground-up feed ingredients, often including grains or oilseeds, but again, these do not involve the fermentation process used to make silage.