A CALENDAR OF LIVESTOCK PARASITES iy 
MAY 
Prevent the screw-worm fly from breeding. 
Treat sheep and lambs for stomach worms. 
Avoid overstocking of pastures. 
The screw-worm fly usually appears during May in areas where it 
is troublesome. To prevent its breeding, burn all carcasses or bury 
them deep. ‘Treat all brands, shear cuts, and wounds to save your 
stock from screw worms. (Fig.6.) Write for Farmers’ 
Bulletin No. 857 (6). 
Begin to treat yoursheep and lambs forstomach worms 
and other worm parasites, and keep this up at three- 
week intervals until freezing weather. On_ heavily 
stocked, short, dense southern pastures it may be neces- 
sary to treat every two weeks. The copper sulphate 
solution is satisfactory for stomach worms. If hook- 
worms and tapeworms are present, use the copper 
sulphate and tobacco solution. 
It is advisable to employ a competent veterinarian 
to treat your animals, as proper diagnosis and treat- 
ment call for knowledge and skill to avoid errors, loss 
: of time, and waste of money. Sheep 
nt and lambs kept under proper treat- 
ment do not die of worms; they make 
a better growth, and they produce 
a ee more wool and mutton. Fic. 6—Screw 
oo : . worm, en- 
sheep; about natural Tar the sheeps’ noses with pine arsed 
size tar during the fly season to prevent 
infection with grub in the head. (Fig. 7.) Sheep suffer more from 
parasitic diseases than from any other diseases, and the sheepman 
loses a lot of money on account of these parasites. Write for Farmers’ 
Bulletin No. 1330 (S). 
Be sure to avoid overstocking, especially on short, dense pastures. 
Rotate your livestock and pastures whenever possible. Three weeks 
after young stomach worms have been swallowed by sheep, these 
worms are producing eggs which pass in the manure and either start 
a pasture infection or increase an infection already existing. 
Provide clean, safe drinking water for your stock. Such parasitic 
worms as liver flukes may be conveyed to stock in drinking water 
from small streams, ponds, and puddles. Low, wet areas should be 
drained or filled in. Wet pastures are especially dangerous for 
young livestock, and if stock must be run on such areas it is advisable 
to put mature stock on them and to put the young stock on high, 
dry, hillside pastures. 
