In a proceeding against a dairy plant operator under s. 93.06(7) or (8), 100.20(5) or (6), 100.22(4) or (5), or 100.26(3) or (6), Stats., proof that a complaining producer received a lower milk price or non-price consideration than another producer shipping milk to the same dairy plant during the same pay period is presumptive evidence of injury to that producer.
Wis. Admin. Code Department of Agriculture, Trade and Consumer Protection ATCP 100.987