158 SWINE DISEASES 



condition does not impair the meat for food. If for any 

 reason the animal is to be kept upon the premises, it 

 should be placed in rigid quarantine. 



Tick Infestation 



Infestation of swine with ticks, particularly the ear 

 ticks (Ornithodorus megniiii), has attracted the attention 

 of some southern swine breeders. These ticks locate in 

 the external ear and produce irritation which annoys the 

 infested animals. They may be removed by pouring 

 into the ear some alcohol, dilute antiseptic or bland oil. 



Thread Worm Infestation 



Cutaneous infestation by Filaria may occur in swine, 

 but it has not been positively identified. 



Ringworm Infestation 



Rarely does ringworm occur in swine. The condition 

 is caused by a Trichophyton. 



Lesions. The lesions are usually located on the back 

 or the outer surface of the thighs and are seen as isolated, 

 circumscribed, round, red spots with a raised margin 

 which bears small vesicles. The central portion appears 

 normal, except that it is scaly. The trouble gradually 

 extends in all directions, the raised vesicular margin 

 representing the outside of the lesion. When the lesion 

 becomes very large the center, or original lesion, has 

 apparently recovered. The disease is transmitted by 

 actual contact. 



Treatment. Cleanse the affected parts and apply a 

 five-percent solution of creolin, repeating the treatment 

 on the fourth or fifth day. 



