Sentence:  Increases rate of gain and improves feed efficiency , aids in the prevention or treatment ( depending on level fed ) of the early stages of shipping fever , prevents or treats bacterial diarrhea , and aids in reducing incidence of <WSD>bloat</WSD> and liver abscesses . 
Meaning of the word marked with <WSD> tags:  swelling of the rumen or intestinal tract of domestic animals caused by excessive gas