It is hereby declared, as a matter of legislative determination, that producers of market milk appointed to the regional advisory boards pursuant to this article are intended to represent and further the interest of a particular agricultural industry concerned, and that such representation and furtherance is intended to serve the public interest. Accordingly, the Legislature finds that, with respect to persons who are appointed to such advisory boards, the particular industry concerned is tantamount to, and constitutes, the public generally within the meaning of Section 87103 of the Government Code.