Compared with obese pig breeds, Duroc pigs have a very low IMF content, while the Chinese native pig breed, Luchuan, is mainly known for its high IMF content. Therefore, studying the difference in lipid metabolism between the Duroc and Luchuan pig can help us better understand the lipid metabolism regulation mechanism and help to improve meat. Swine in this breed are Berkshire, Duroc, Hampshire, Poland China, and Spot. Colored breeds are known for their ability to pass along their muscle tone and durability. Berkshire - this is the third most popular breed of swine in the United States. This breed of swine is known for fast growth, as well as reproductive efficiency and meat quality.