55

Any person operating any butter factory, cheese factory or other milk plant, before delivering to any person any skimmed milk, whey, buttermilk or milk container or plant equipment rinsings, to be used for the feeding of domestic animals, shall cause such by-product to be uniformly heated to a temperature of not less than one hundred and forty-three degrees Fahrenheit and held at such temperature for at least thirty minutes, or to be uniformly heated to a temperature of one hundred and seventy degrees. No such by-product shall be used for the feeding of domestic animals until heated as provided herein.