More Than A Feed Company, We Like To Give Service Ozinga Feed Service, Inc., in Oskaloosa, IA, is the area's leading feed dealer serving Mahaska, Marion, Monroe, Warren, Keokuk, Wapello and surrounding areas since 1982. Marv and Brad Ozinga are the owners. We specialize in manufacturing bag and bulk feed, animal feed, feed delivery, farm equipment and supplies and much more. For more information, contact Ozinga Feed Service, Inc. in Oskaloosa.