《周礼·天官冢宰·亨人&兽医》
凡家畜有疾病的，有疡疮的，就使兽医进行治疗，死了就统计死畜的数量，以决定兽医俸禄的增减。
凡兽之有病者，有疡者，使疗之。死，则计其数以讲退之。
Whenever a domestic animal was sick or had an abscess, the animal was turned over to a veterinary officer for treatment; if the animal died, the number of dead animals was tallied to determine whether the veterinary officer’s salary should be increased or decreased.