Duroc PIGS: The untold story. Meat Quality: The meat from Duroc pigs is typically dark red in colour, maintains moisture well and has good fat marbling throughout. Duroc pigs possess a significant amount of lean muscle and when they are slaughtered the carcasses yield a high amount of usable flesh. Growth: Duroc pigs are one of the fastest growing breeds of pig when they're kept on a consistent and nutritious diet. Reproduction: Duroc pigs are known for producing large litters, especially when D