"Farm product processing" means the alteration or modification, for the purpose of storage, transport, or sale, of an agricultural product produced on a farm site through the addition of other ingredients or components, provided that the initial agricultural product shall be the principal ingredient or component. The addition of elements necessary for the long-term storage or stability of the product shall not be considered farm product processing, provided that this addition does not alter the agricultural product from its original constitution or state. Farm product processing includes the production of wine. Farm product processing shall not include the operation of a stockyard or slaughter house. (Added by Amended Ord. 02-064, Dec. 9, 2002, Eff date Feb. 1, 2003; Amended by Amended Ord. 04-074, July 28, 2004, Eff date Aug. 23, 2004).