The word "牲畜" is formed by combining the characters "牲" and "畜", each contributing to the meaning of domesticated animals. "牲" includes the radical "牛" (cow) to indicate animals and the phonetic component "生" (life) to imply living creatures used for sacrifice or labor. "畜" incorporates "田" (field) to suggest pastoral farming and the component "玄" which historically relates to rearing or keeping animals. Together, these characters reinforce the concept of livestock raised for practical purposes.