what is the function of the mammary glands
exists and is an alternate of . A mammary gland has the same function for a pig as it does for all mammals. Mammary glands produce milk, which contains fats and vitamins, which the babies need to live. A mammary gland has the same function for a pig as it does for all mammals. Mammary glands produce milk, which contains fats and vitamins, which the babies need to live.