PREVENTION, SYMPTOMS AND TREATMENT 



295 



removed from the surface of infected corrals, and the soil then 

 wet with a saturated solution of chlorinated lime. The walls, 

 floors, racks and troughs of pens or sheds should be disinfected 

 by a solution of 5 per cent, formalin, or crude carbolic acid, or 

 sheep dip, by means of a force pump or with a brush. In case of an 

 outbreak of the disease the healthy sheep should be transferred, if 

 possible, to new pastures and bed grounds, and frequently examined 

 for new cases. 



The medical treatment of the disease, in its various forms, is 

 the same : — Removal of crusts, scabs and necrotic tissue and the 

 application of local antiseptics and stimulants. 



In the milder type of the leg-and-lip ulceration, the scabs and 

 necrotic tissue may be removed by a dull curette or sharpened piece 

 of stick and the antiseptic recommended by the U. S. Agricultural 

 Department applied. This consists of the following ointment : — 



Cresol S parts 



Sulphur 10 parts 



Adipis 100 parts 



M. 



Sig. Apply externally 4 times weekly. 



In the more severe acute forms of leg-and-lip disease, and in 

 chronic obstinate forms, stimulation of the diseased parts is de- 

 sirable. For this purpose, the Agricultural Department states that 

 a solution of nitric acid or zinc chloride (1 to 70) applied by 

 means of a swab, carefully, to the ulcerated parts thrice weekly, 

 after scraping off all crusts, scabs, and exuberant granulation 

 tissue, is decidedly the best application. It should be followed by 

 the use of the ointment noted above. Four or five weeks' treatment 

 is usually sufficient to secure recovery in most cases. It is generally 

 cheaper to kill the old and resistant cases than to continue hand 

 treatment too long. 



On the other hand, the treatment by dipping large numbers of 

 diseased sheep is not nearly so effective as the hand treatment 



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