More than 600 farmer suppliers to Dutch dairy co-op FrieslandCampina quit their business in 2018 and exited dairy farming altogether, according to the co-op’s annual report for 2018.FrieslandCampina said the number of dairy farms that supplied the co-op with milk in 2018 stood at a little over 12,100, which is more than 600 farms fewer than the previous year.