Sarcoptic Acariasis in Goats. 193 



harmless. Treatment : Glycerine or oil in ear, with or without tobacco de- 

 coction. Symbiotic Acariasis in Goats : In Angora goats, attacks pasterns, 

 or neck, shoulders, back, loins, rump. Symptoms : Redness, papular erup- 

 tion, exudate, matting hair in tufts, or forming crusts, skin thick, corru- 

 gated, glands swollen ; extension slow. Acarus like that of sheep, etc., but 

 has longer rostrum and limbs, and two spathe-like prolongations on abdom- 

 inal lobes. Treatment : Clip, soften and remove crusts ; apply anti-psoric 

 dressings. 



This has been especially noticed in goats brought from Thibet, 

 Persia (Henderson), Kartoum, Africa (Miiller), and N. Africa 

 (Roloff). It appears to be common to goats of different breeds, 

 but has been thought to be especially obnoxious to those of Asia, 

 Africa (dwarf goat) and Switzerland. 



Pathogenesis. The fat tailed sheep has been found affected 

 and Railliet has transferred the acarus from the goat to the face of 

 European sheep, so that the acarus has been supposed to be 

 identical with or closely allied to that of itack nose (Sarcoptes 

 Scabei var. Ovis). It has also been successfully transferred to 

 the horse (Wallraff), the human being (Henderson), to cattle 

 and pigs (Wallraff). Miiller failed to convey the disease to 

 sheep with long or dense or greasy wool (to any indeed but those 

 with short or scanty wool — Somali, Fat-tailed). He also failed 

 with pig, dog, ass and rabbit. 



The parasite, Sarcoptes Scabei var. Caprae, resembles the 

 other sarcoptes already mentioned and is distinguished by the 

 animal which it prefers as a host. 



Symptoms. The affection may begin on the face as in sheep, 

 but differs from black nose in tending to become generalized, on 

 the head, ears, neck, trunk, udder and finally the limbs. It ap- 

 pears with redness and minute papules, with an excess of dand- 

 ruff, and exudation which concretes in a thin friable scurf, or, 

 under the energetic scratching, rubbing, and biting, into thick 

 scabs with, at intervals, cracks, abra.sions, raw sores, and pustules. 

 The hair drops from the affected parts. The intolerable itching, 

 unrest, and impairment of feeding, digestion and assimilation de- 

 termine a rapid loss of condition and numbers of goats perish. 



Treatment is the same as for sheep, but as the goat is in- 

 tractable in the bath it is best to resort to liniments or ointments 

 after having clipped the hair and softened and removed the scabs. 



Psoroptic Acariasis (Scabies) in the Ear of Goats : Ota- 

 12 



