8; 



rOULTRV DISEASES AND THEIR TREATMENT. 



given t:) prc\ent chickens from ]jecoming infected with other 

 tape worms until the life history of these parasites is better 

 nnderstoo:!. It will be well, however, to keep the chickens 

 housed in the morning until the sun is well up and the ground 

 is dr\-, for they will thus be less likely to meet with the sup- 

 posable intermediate hosts of other worms." 



Round JVorms. 



Round worms can be found in the intestine and especially the 



ceca of almost any fowd. They are much more common than 



the tape worms. Normall}' the round worms cause no serious 



trouble to fowls. Under certain conditions, however, they may 



become so numerous as to 

 Ije a serious menace to the 

 flock. At such times they 

 have a decided efifect on 

 the digestion ; the irrita- 

 tion often causes diarrhea. 

 AVhen in large nimibers, 

 they sometimes become 

 rolled and matted into a 

 ball which may cause 

 complete stoppage of the 

 intestine. 



The round worms are 

 white in color and vary in 

 length from 1-3 inch to 5 

 inches. The head end is 

 sharp pointed, while the 

 tail end is more blunt. 

 Round worms are seldom 

 passed in the feces unless 

 present in very large num- 

 bers. When a worm is 

 passed it soon dies in the 

 droppings or is eaten by 

 another fowl. 

 Dispharagiis spiralis, a small worm about 1-3 inch in length, 

 is often found in the resophagus and occasionally in the crop or 

 intestine. 



Fig. 9. Worms protruding from a sec- 

 tion of tlie intestine of a fowl. 

 (.-\ftrr Bradshaw). 



