PARASITES OF THE ALIMENTARY TRACT 81 
Tveatment.—Prophylaxis consists in draining the 
land. All feces from affected animals should be dis- 
infected and destroyed. Fields in which the disease 
exists should be avoided during the hottest months of 
the year. 
Therapeutic treatment consists in giving internal 
antiseptics, as lysol, creolin, salol, etc., together with 
alkalis and mild astringents, given in mucilaginous 
drinks. 
An ample supply of concentrated, easily digestible 
nourishment is essential. 
Tapeworms in Sheep. 
These are very common, and the sheep, next to the 
dog, is the most frequently infested of the domesticated 
animals. 
As in the ox, there may be present : 
I. Tenia expansa. 
2. Tenia alba. 
3. Tenia denticulata ; sometimes spoken of as Tenia 
ovilla. 
4. Tenta fimbriata, or Thysanosomum actinioides. 
Thysanosomum Actinioides. — This parasite is also 
spoken of as the fringed tapeworm, as the posterior edge 
of each segment is quite visibly serrated. The genital 
pore is double in each segment. 
The head is quite distinctive. It carries four slit-like 
suckers, placed exactly at the four corners. 
Sympitoms.—This disease in sheep is very prevalent 
and of great importance in North America. In Sep- 
tember and November the lambs fail to make the 
progress they should do, Catarrhal enteritis sets in, as 
a result of irritation, and the worms invade the bile-ducts. 
Jaundice results, and the infected lambs are small, 
dropsical, and badly nourished. 
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