Sentence:  The most important is the <WSD>carcass</WSD> but the liver, kidneys and, to a limited extent, various other visceral components also have value as food items....For example, the <WSD>carcasses</WSD> from sheep and cattle have the head removed immediately after slaughter but in pigs this may be delayed until after chilling and further butchery. 
Meaning of the word marked with <WSD> tags:  The body of a slaughtered animal, stripped of unwanted viscera, etc.