Raising Sheep on Temporary Pastures. 9 
days. After 25 days there was new growth enough to carry 35 
ewes for 18 days. This feature of making new growth after being 
grazed is a vahiable one in soy beans, and sheep and lambs eat the 
crop with great relish. 
Cowpeas are planted at the same time as soy beans and grow at 
about the same rate. They produce feed similar in amount to that 
obtained from soy beans, but are less palatable for lambs, and the 
crop does not make so much of a second growth as do soy beans. 
The arrangement of the fields used in this experiment, the order of 
seeding and grazing the crops, and the amount of pasturage pro- 
duced are shown in the map of the field in figure 6. 
B'iG. 4. — Lambs in soy beans, Beltsville, Md., July 10, 1917. 
HEALTH OF SHEEP. 
Prevention of injury by internal parasites is a principal advantage 
of providing temporary pastures for sheep under a plan that allows 
their going to fresh ground at intervals of not more than 2 weeks. 
It is considered that most flocks have some degree of infection of 
stomach worms. In warm, moist weather the eggs in the drop- 
pings of the older sheep develop in a few days into larvse, which are 
especially injurious when taken up by lambs. These larvae are 
largely destroyed when land is plowed, and it is for this reason that 
plowing is recommended in reseeded land after a crop has been 
pastured. 
Older sheep are less susceptible than lambs to the effects of stomach 
worms. There is less danger in allowing them to remain longer than 
2 weeks on the same ground or in using up feed left in fields from 
which lambs have been removed. Because of the continued chance 
of infection of lambs from grass along fence rows and in unplowed 
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