The provisions of this subtitle do not apply to the following:
(1) Any person who by dispersal sale is permanently discontinuing the business of dairying, breeding, raising, or feeding animals.
(2) The part of the business of a farmer which consists of buying and receiving animals for grazing and feeding purposes and the sale or disposal of these animals after the grazing and feeding period.
(3) The sale by a farmer of any breeding, surplus, or unprofitable animal owned by him.
(4) The private sale, exchange, or transportation of any equine.