It is hereby recognized and declared as a matter of legislative determination that in the field of human nutrition, safe, clean, wholesome milk is indispensable to the health and welfare of the citizens of the State of Nebraska; that milk is a perishable commodity susceptible to contamination and adulteration; that the production and distribution of an adequate supply of clean, safe, and wholesome milk are significant to sound health; and that minimum standards are declared to be necessary for the production and distribution of milk and milk products.