Georgia State College of Agriculture 



In order that a successful campaign of eradication may be waged 

 against hog lice it is necessary that the old louse-infested nests of 

 the hogs be burned or thoroughly saturated with -strong disinfectant 

 solution. The hog houses and pens should be thoroughly sprayed 

 with a 4 per cent solution of cresol or coal tar disinfectant. It is 

 best to add to the disinfecting solution a small amount of air 

 slaked lime in order that it may mark where the solution was ap- 

 plied. 



Mange, Bed Mange (Demodectic Mange), (Demodex folliculorum). 

 Life History. The parasites inhabit the hair follicles of the skin 

 and cause constant irritation, redness and thickening. The para- 

 site is visible with the aid of a low power micro- 

 scope, great numbers being found in a single hair 

 follicle. The entire life cycle, egg, larvae, pupa 

 and adult, is passed on the host. The parasites re- 

 semble an oat grain in form and have eight short 

 legs. They live upon the substance of the hair at 

 the roots. 



Symptoms. The most common seat of infestation 

 on hogs is in the region internal to the front limbs 

 and the thighs. From these locations the disease 

 may spread over the entire body. The skin is 

 roughened, pustules are formed and the skin as- 

 sumes a warty appearance. 



Method of Infestation. Animals become infested 

 through contact with infested animals or by occupy- 

 ing premises, cars or vehicles which have harbored 

 FiG.21. Ventral view or transported infested animals. 

 of male Demodex Treatment. The treatment of red mange is more 

 wi/ C " \fteVcsokor* difficult than that of any other external parasite 

 1879). x240. on account of the location of the parasites deep 



dovv'ii in the substance of the skin and out of reach of ordinary 

 parasiticides. 



Thorough scrubbing of the skin with strong soap and warm water 

 followed by application of strong disinfectants may be beneficial. 

 Kaupp, Animal Parasites, recommends gasoline, oil of tar and oil 

 of cade, also oleo-resin aspidii 8 parts, creolin 42 parts, alcohol 50 

 parts. 



Ticks. 



Various species of ticks are at times found infesting hogs and 

 sometimes cause considerable irritation and loss of condition. Usu- 

 ally these ticks are not the cattle fever tick but are of some of the 

 so-called harmless species not known to be an actual causative fac- 

 tor of disease. Tick infestation of hogs, however, deserves suffi- 

 cient consideration to merit a recommendation for treatment. 



Treatment. Swabbing, spraying or dipping of infested hogs with 



