Sec. 39. (a) "Confined feeding", for purposes of IC 13-18-10, means the confined feeding of animals for food, fur, or pleasure purposes in lots, pens, ponds, sheds, or buildings where:
(1) animals are confined, fed, and maintained for at least forty-five (45) days during any twelve (12) month period; and
(2) ground cover or vegetation is not sustained over at least fifty percent (50%) of the animal confinement area.
(b) The term does not include the following:
(1) A livestock market:
(A) where animals are assembled from at least two (2) sources to be publicly auctioned or privately sold on a commission basis; and
(B) that is under state or federal supervision.
(2) A livestock sale barn or auction market where animals are kept for not more than ten (10) days.