Recommendations for controlling external parasites of swine

"5/78/6M""The major external parasite attacking hogs in Missouri is the hog louse. These insects obtain their food by puncturing the skin of the host animal with their mouthparts and sucking blood. Each time they feed they puncture the skin at a different place. The irritation and itching caused by puncturing the skin causes the animal to rub against any convenient object. The animals may off the hair in patches and may even rub hard enough to cause bleeding."--First page.Flernoy G. Jones (Department of Entomology, College of Agriculture