COMMON DISEASES AND TREATMENT 



171 



worms that have attached themselves to the inside of the 

 chicken's windpipe. 



Symptoms. The characteristic symptom is the frequent 

 gaping of the bird in its effort to expel the worms. 



are usually found on 



Treatment. As the gape-worms 

 the ground that has been used for 

 some time as a range for poultry, the 

 best remedy is to move the chickens 

 to a new range. The ground so in- 

 fected should be thoroughly limed 

 and plowed, and not used for young 

 chicks for at least two seasons. As 

 an individual treatment the worms 

 can often-times be removed by in- 

 serting a looped horsehair down the 

 windpipe of the chick. After so in- 

 serting it, turn it two or three times. 

 When withdrawn it will usually 

 bring out several of the worms. 

 Make sure that the hair is injected 

 in the windpipe and not down the 

 bird's throat. The worms so re- 

 moved should be shaken from the 

 hair into a receptacle and scalded 

 or burned. Frequently such worms 

 can be removed by adding 15 grains 

 of salicylic acid to each quart of drinking water. 



Crop bound. This disorder is caused by the crop's 

 becoming overloaded with feed to such an extent that the 

 muscular walls become partially paralyzed and thus unable 

 to work off the accumulated food. 



Symptoms. The trouble can be discovered by the fact 

 that the crop is hard, firm, and protrudes noticeably. Again, 

 birds so affected will be frequently noticed trying to move 



Figiire 170. — The windpipe of 

 a chick cut open showing the 

 gape-worms attached 



