Every person that operates any place where milk is received and byproducts are distributed shall pasteurize any skim milk, whey, or other milk byproduct which is to be used for feeding purposes for farm animals before delivering it. Such pasteurization may be accomplished by heating the byproduct to a temperature of 145 degrees Fahrenheit and holding it at that temperature for not less than 30 minutes, or by heating it to 185 degrees Fahrenheit without holding.