134 



FARMER'S CYCLOPEDIA OF LIVE STOCK 



Miscellaneous worms — Hogs are also 

 subject to infestation with pinworms 

 (Oesophagostomum deniatum) which 

 may cause slight digestive disturbances 

 and may be prevented by proper clean- 

 liness in the food and water supply; 

 whip worm (Trichocephalus crenatus) 

 which infests pigs by means of unclean 

 food, but fortunately causes no serious 

 symptoms under ordinary conditions; 

 lung worm (Stongylus paradoxus) which 



flukes (Paragonimus westermanii) and 

 pork measle worm {Cysticercus cellu- 

 losae). 



Fig. 91 WHIP WORMS ATTACHED TO 



AVALL OF HOG INTESTINES 



attacks the lungs and bronchial tubes of 

 pigs under six months of age and causes 

 symptoms which have given the disease 

 the name of whooping cough. The para- 

 sitic worm is about % of an inch long. 

 It is not well understood how the worm 

 gains entrance to the bronchial tubes, 

 but infestation appears to be connected 

 with wet pasture lots and miry, unsani- 

 tary quarters. The symptoms are a 

 whooping cough, lack of thrift and con- 

 siderable emaciation. As a rule pigs 



£■ '2js 



Fig. 92 — PORK MEASLES 



recover, especially if careful attention 

 is given to their diet. This is about 

 all that can be done, since direct reme- 

 dial treatment has not given satisfactory 

 results. Hogs are also occasionally in- 

 fested with liver flukes, which will be 

 described under Diseases of Sheep, lung 



Fig. 93 — SEVERAL SEGMENTS OF ADULT PORE 



MEASLE TAPE WORM (TAENIA SOLIUM), 



NATURAL SIZE 



This worm is the immature stage 

 of one of the common tapeworms of 

 man and man becomes infested with 



