CHAPTER TI. 

 PARASITIC AND OTHER DISEASES. 



I. SCAB, TICKS AND LICE. II. FOOT-nOT. III. FOUL IN THE FOOT. 



IV. SWOLLEN FOOT AND GRAVEL. V. MAGGOTS FROM BLOW FLIES. 



VL INTESTINAL WORMS. VIL THE ROT OR LIVER FLUKE. VIII. 



LUNG WORMS. IX. SHEEP WORRIED BY DOGS. X. SPRAINS, STRAINS 



AND BRUISES. XL CARE WHEN LAMBING. XII. NAVEL ILL. 



XIII. BARE-LOT METHOD OF RAISING LAMBS TO AVOID NODULE DISEASE. 



I. Scab, Ticks and Lice. 



Causes. — Scab is produced by a minute microscopic, parasitic insect, 

 which burrowing just beneath the cuticle, produces extreme irritation, and 

 causes the exudation of a watery fluid, serum. This, in drying, forms the 

 scab which brings away with it the wool in larger or smaller patches. 



The disease is very contagious, and the insect is so 



tenacious of life that it has been said to have remained 



in a pasture three years andthcn spread the infection. 



A careful flock master should examine every sheep 



uhMvuiLx. purchased minutely, and take every means to keep 



*oi°"he s"heep^and"^(k)g" u tlic infectiou f rom his flock. The illustration shows 



causes skin irritation and p/. , i • , i i • -j j ^ 



eruption. shccp affectcd With scab in its extreme lorm. 



How to know it. — The sheep will be restless and irritable ; will rub 

 against anything near ; will bite its fleece, and scratch with its hoofs. At 

 length the fleece becomes ragged, and drops off, to permanently infect 

 tne pasture. 



What to do. — It is not diflicult to cure, but the means must be thor- 

 ough. A good effective remedy, though poisonous, is the following : 



No. 6. 6 Pounds arsenic, 



G Pounds pearl ash, 

 6 Pounds stdphur, 

 6 Pounds soft soap, 

 20 Gallons boilings water. 



Mix, but avoid the fumes, and when cold, add 180 gallons of cold water, 

 and stir until well mixed. Prepare a tank that will readily allow a sheep 

 to be dipped in it. From this a slanting, slotted drain, having a watcr- 

 tit'ht bottom underneath, and extending just over the edge of the tank, 

 should be laid. Dip the sheep, back foremost, into the tank, allowing him 

 to remain submerged in the liquid, except the head, for one minute. Then 



1074 



