DISEASES OF SWINE 



519 



neither the house nor the lots should be used for a time, thus 

 giving the sun sufficient time to destroy all the germs. 



WORMS 



Internal worms are of frequent occurrence in swine. They in- 

 habit both the stomach and intestines. These worms interfere 

 with digestion; in consequence the pigs fail to thrive and become 

 pot-bellied, rickety, profitless runts, or quickly succumb to the 

 effects of the worms. Swine infested with worms become an easy 

 prey to more deadly diseases because of their weakened condi- 

 tion. 



Prevention of worms. — Well-fed swine, in general, are not sub- 

 ject to worms. The strong thrifty pig is usually able to resist 

 the parasites. Hogs having free access to wood ashes, charcoal, 

 air-slaked lime, and coal cinders are not likely to be troubled. 

 The alkali in the wood ashes, together with the grit in the cinders, 

 have a tendency to destroy the 

 worms. Pumpkins, fed seed and 

 all, in the fall also help to keep 

 swine free from worms. 



Stagnant surface water, in 

 which hogs wallow, are ideal 

 places for the incubation and 

 development of worms. For 

 this reason old pens and pas- 

 tures, if wet, should not be used 

 for hogs. The pens and pastures should be well drained and 

 ail stagnant water fenced out or the ponds filled in. The drink- 

 ing water should come from a deep well, and it should be kept 

 pure by using clean troughs so constructed or protected that 

 the hogs cannot wallow in them and fill them with filth. 



Treatment for worms. — The average herd of pigs is kept 

 under such conditions that it is desirable to dose them at least 

 once during the year with some reniedy that will destroy the 



Fig. 177. — Tamwokth Pig owned 

 BY Univebsitt of Illinois. 



