External parasitism is a continuing problem for pork producers.
Lice and mange mites can also mechanically transmit diseases such as swine pox and eperythrozoonosis. The major problems are caused by hog lice. Sarcoptes scabiei and Demodex phylloides. Life Cycle of Hog Lice Hog lice are bloodsucking parasites that feed exclusively on swine. They can survive for 2 to 3 days off the pig in warm bedding, but they will not generally live on other animals.