For the purposes of NRS 584.125 to 584.145, inclusive, ‘wholesome butter’ means butter made from cream and milk wherein the entire procedure from dairy to creamery, or other place of manufacture of such product or products, is conducted under sanitary conditions, and wherein the milk or cream has either been produced by cows all of which have been duly certified by some reputable veterinarian as free from tuberculosis, or, if not so certified, wherein such milk or cream has been pasteurized as prescribed by the Director pursuant to NRS 584.135.