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Which grains are commonly included in pig feed?

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Livestock farming Pregnant brown and white Guernsey cow.

In the context of livestock farming, several cereal grains are commonly used as energy and carbohydrate sources in pig feed. Corn (maize) is considered a favorite for this purpose. Other grains frequently included in swine diets, often selected based on their availability and price, include:1

Wheat1
Sorghum (including milo)12
Barley13
Oats12
Rye2

These grains are typically fed either whole or ground, and they may be mixed with other ingredients—such as high-protein oil meals (like soybean oil meal), minerals, and vitamins—to create a balanced, complete feed.12