GASTRO-INTESTINAL STRONGYLOSIS IN SHEEP. 



265 



each cavity varies within wide hmits. The Hquid may even resemble 

 that due to inflammation or infection ; sometimes it is light pink or 

 red in colour. 



Pulmonary lesions usually exist. JMoussu has almost always found 

 gastric strongylosis associated with pulmonary or tracheo-bronchic 

 strongylosis, but Lignieres asserts that the Argentine cases showed 

 nodules of hepatisation which had nothing to do with the pulmonary 

 strongylosis, and which appeared to result from areas of pneumonia 

 produced by the specific cocco-bacillus and other organisms. He has 

 even found abscesses and cavernous spaces in the lung. 



Pathogeny. According to Lignieres the specific agent of pernicious 

 ansmia is a cocco-hacillus which stains well with fuchsin, violet, blue, 

 safraniu, etc., but does not 

 take Gram, and which in 

 cultures assumes either 

 the strepto-bacillary form 

 or occurs in barrel- shaped 

 masses. It grows in simple 

 bouillon at 38" C, but 

 better still in peptonised 

 bouillon, -which turns tur- 

 bid for five or six days, 

 afterwards becoming lim- 

 pid in consei]uence of the 

 organisms falling to the 

 bottom of the vessel. It 

 does not coagulate milk. 

 On agar the culture is 

 thin, bluish, shows an 

 iridescent reflection, and 

 when old appears whitish. 

 Grown on gelatine, the appearances are similar — the gelatine is not 

 liquefied ; on serum the pellicle is scarcely visible. 



The organism is said to be pathogenic for guinea-pigs, rabbits, dogs, 

 and, of course, for sheej). Moussu, however, does not consider that the 

 reported cases of transmission through the blood stream or hy subcu- 

 taneous injection are really convincing or characteristic. He does not 

 question the fact that Lignieres discovered a special pathogenic agent in 

 all cases and in all his patients; but what aj)pears to him debatable 

 is the exclusive part which Lignieres attributes to that agent. 



The fact that in Argentina, just as in France, strongyles ha\'e always 

 been discovered in epizootics of this nature of itself constitutes some- 

 thint^ ; and causes the second fact, that it has never yet been proved 



Fig. 114.- 



-Wasting due to gastro-intestinal 

 strongylosis. 



