| With the attention to animal welfare issues, how to reduce the pain of pigs in the process of breeding and
management is a new topic facing to livestock veterinarians. In the process of pork production , pigs will undergo a series
of management procedures (such as tooth cutting, castration and tail-cutting, etc.), fighting injuries, lameness caused by
environmental factors and pain caused by other diseases. With the combination of pig management practices, this paper
explained the pain occurrence , pain assessment, behavioral changes and quantitative sensory tests in pigs, and summarized
the methods and behavioral indicators for the evaluation on pig pain. Since there was no unified standard and method for
animal pain assessment in pigs, this article summarized methods and behavioral indicators for assessing pig pain so as to
provide references for the development of more effective pain relief drugs and the preparation of relevant strategies. |
