Sentence:  For cows , feed providing an intake of 0.1 milligram of Aureomycin per pound of body weight daily aids in the reduction of bacterial <WSD>diarrhea</WSD> , in the prevention of foot rot , and in the reduction of losses due to respiratory infection ( infectious rhinotracheitis - shipping fever complex ) . 
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