7S 



DISEASES OP MUSCLES AND TENDONS. 



Fig. 36. — Eggs of poi-k- 

 measle tapeworixi {Tceniit 

 solium) : ti, with primi- 

 tive vitelline membrane ; 

 /<.^\'itliout primitive vitel- 

 line membrane, but ■i\ith 

 striated cmbr yophore . 

 X 450. (.\fter Leuckart.) 



cysticerci, but the uncertainty in tliis respect should prevent such meat 



Ijeing consumed. Tlie cysticerci are Idlled at 

 a temperature of Ur/' to 180° Fahr. 



Lesions. The lesions are I'epresented by 

 cysts alone — i.e.,hj semi-transparent bladders, 

 each of ^yhich contains a scolex or head armed 

 ^Yith four suckers and a double crown of hooks. 

 The little bladders are most commonly found 

 in the muscles, lodged in the interfascicular 

 tissue, which they slightly irritate. 



The number present varies extremely, 



depending on the intensity of infestation and 



the number of eggs swallowed. Whilst in 



some cases difficult to discover, in others 



they are so numerous that the tissues 



appear stre\\n with them. 



They are commonest in the muscles 

 of the tongue, neck, and shoulders, in 

 the intercostal and psoas muscles, and in 

 those of the quarter. 



The viscera — viz., the liver, kidneys, 

 heart, lungs, etc. — are less commonly in- 

 fested, and in these organs the cysts 

 degenerate very rapidly. In animals 

 which have Ijeen infested for a long time, 

 the cysts may even have undergone caseo- 

 calcareous degeneration, the liquid Ijeing 

 absorbed and the lesions presenting the 

 appearance of little oblong firm nodules. 



On cutting through masses of muscle 

 the vesicles protrude from between the 

 bundles. 



In young animals, infestation with 

 cysticerci causes wasting and ill-health; 

 suljsequently the patients improve in 

 api)earance, later on fatten, and gain 

 marketable condition. 



Of the carcases examined in Prussian 

 slaughter-houses between 1870 — 8'2, one 

 in every 305 was found infested ; between 

 1885—93, one in every 537. ^^''- 3^-— Half of hog, showingthe 



mi i rm • , • , , portions most likely to become 



Treatment. There is no curative treat- ■ t t- i ■., , 



. mtested •^^•lth pork measles. 



ment. Only preventive measures are of (After Osiertag.) 



