39.1. For the purposes of section 39.2, “feed” means(1) grain or seed that is described in paragraph 2 of section 178 and used as feed for farm livestock that is ordinarily raised or kept to produce, or to be used as, food for human consumption or to produce wool;
(2) feed that is a complete feed, supplement, macro-premix, micro-premix or mineral feed, other than a trace mineral salt feed, the supply of which in bulk quantities of at least 20 kg would be a zero-rated supply included in Division IV of Chapter IV; and
(3) by-products of the food processing industry and plant or animal products, the supply of which in bulk quantities of at least 20 kg would be a zero-rated supply included in Division IV of Chapter IV.