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 <WSD>diarrhea</WSD> , and aids in reducing incidence of bloat and liver abscesses . 
Meaning of the word marked with <WSD> tags:  frequent and watery bowel movements; can be a symptom of infection or food poisoning or colitis or a gastrointestinal tumor