34 



Georgia State College of Agriculture 



goats and cattle. This species of 

 worm is widely distributed and is 

 a very common parasite of sheep 

 kept on farms. It is not so com- 

 mon in range sheep. Extreme in- 

 festation causes bowel disturb- 

 ances, loss of flesh and condition, 

 and in some cases death. Infesta- 

 tion is most common in old sheep 

 and rare in lambs. Infested in- 

 testines cannot be used for making 

 sausage casings. 



Life History. The life history of 

 this species is similar to that of 

 other intestinal worms. The eggs 

 produced by the female pass out 

 with the manure. The embryos are 

 taken up with food or water and 



Fic.56.-The nodular worm ((Esoph- u P n reaching the intestines pene- 



agostomum columbianum) . En- trate the wall of the bowels and 



larged: * Vulva. (From Bureau sometimes the stomach and liver, 



of Animal Industry Bulletin 127.) Their presence in the tissueg 



causes the formation of a lump or nodule. Examination of the 

 lumps found along the intestines will disclose the worms surround- 

 ed by yellow or greenish debris. 



Treatment. Preventive treatment is the same as recommended 

 for lung worms. 



On account of the location of the worms in the nodules they are 

 beyond the reach of medicines given internally; hence, no treat- 

 ment for their removal can be recommended. 



Stomach Worms (Strongylus contortus), 

 (Twisted stomach worms), (Parasitic gastritis). 



See description of this parasite in discussion of stomach worms 

 of cattle. 



Symptoms. Dullness; depraved or capricious appetite; great 

 thirst; attacks of colic; bloating of the flanks; dropsical swellings 

 of the limbs, under the jaws and under the surface of the body; 

 paleness of the skin and mucous mebranes; and diarrohea, which 

 usually terminates in death, are the regular symptoms noticed. 



Post Mortem Findings. Upon careful examination of the fourth 

 division of the stomach there may be found, in the folds of mucous 

 membrane, great numbers of the worms. In some cases they are 

 packed close together with the heads buried in the membrane which 

 is thickened and pale. 



Treatment. Preventive treatment as recommended for stomach 

 worms in cattle is advised. 



