From Longman Dictionary of Contemporary Englishcattlemancat‧tle‧man /ˈkætlmən/ noun (plural cattlemen /-mən/) [countable] TAsomeone who looks after or owns cattle
Examples from the Corpus
cattleman• Gloucestershire cattleman Guy Wooding will judge the inter-breed championship on the afternoon before the sale.• To the settler or trapper or cattleman, the western frontier was both promising and dangerous.• Cotton may be the biggest loser, but Perry is just as worried for the cattlemen. 