Sentence:  Prevention of bacterial pneumonia , shipping fever , as an aid in reduction of losses due to respiratory infections ( infectious rhinotracheitis - <WSD>shipping</WSD> fever complex ) . 
Meaning of the word marked with <WSD> tags:  a deadly form of septicemia in cattle and sheep; involves high fever and pneumonia; contracted under conditions of exposure or exhaustion (as often happens when the animals are shipped to market)