Acorns
Wild pigs often prefer to eat acorns while they scavenge for food. Acorns are the nuts of oak trees, which grow across the globe in many temperate climates, and they fall from oak trees in the late summer and autumn. Acorns provide a variety of nutrients such as carbohydrates and fat, as well as vitamins and minerals such as manganese, potassium and Vitamin B6.
Domestic Crops
The most common type of feed for pigs, especially on large farms, is domestic agricultural crops. Pigs enjoy corn, which is high in carbohydrates and easy to digest. However, farmers will also feed pigs oats, barley and sorghum in order to give the pigs a balanced diet. Often farmers will feed the pigs crops that the farmers grow directly on their farm.
Truffles
In France, people use pigs to search for truffles. Truffles are a type of mushroom that people value as a spice. They grow in forests close to oak trees. Pigs love to eat truffles, which according to the New York Times may be a result of some particular enzymes that both truffles and pigs share. Pigs can sniff out truffles for truffle hunters, who then must quickly remove the mushrooms before the pigs eat them.
Leftovers
Because pigs are omnivores, they eat many different foods, and some pigs may have particular preferences. Pigs may enjoy fruits such as apples, oranges or berries. They may also eat vegetables such as potatoes, yams, carrots or onions. Because humans eat a very similar range of foods, many pigs will happily eat the leftover food not eaten by their owners.