PAfcASITES AND PARASITIC DISEASES OF HORSES 



33 



Pastures should be stocked lightly. Heavy stocking means more 

 manure, and this, in turn, means a heavier concentration of parasite 

 eggs and larvae. 



Sloping hillside pastures are better than level ones. Rain and 

 melting snow tend to wash manure down to some extent from sloping 

 pastures. The bottom of a sloping pasture is dangerous because 

 it has a high concentration of eggs and larvae. It should be fenced 

 off if possible. 



Figure 23. — A, Box with double walls and double floor for sterilizing horse 

 manure ; B, tight-fitting lid. The space between walls and floor must be 

 filled with sawdust to insure insulation 



Rotation of pastures is desirable and should be used so far as 

 available pastures permit. It is important to remember that perma- 

 nent pastures perpetuate parasites. 



Stock rotation is a sound procedure. For the most part the 

 parasites of cattle, sheep, and goats are not transmissible to horses, 

 and vice versa. Move horses to a pasture on which cattle or sheep 

 have been grazing and move cattle and sheep to a horse pasture in 

 alternate years. 



