Well, I'd be surprised if a horse didn't burp or belch after a feed. Too many guts ! More acceptable than passing gas. The noise & the filthy odor ! A woman reporter got angry because her report at a farm kept getting interrupted and had to be restarted, because a horse in the barn kept breaking wind. She even swore at the animal ! (unusable footage was shown on a TV blooper show).
Well, I'd be surprised if a horse didn't burp or belch after a feed. Too many guts ! More acceptable