. Cyclopedia of farm animals. Domestic animals; Animal products. SWINE SWINE 655 The Demodex folliadorum, causing the other vari- ety of hog mange, lives deep in the hair follicles and sebaceous glands. Its presence causes pustule formations, which rupture and leave small ulcers on the skin. The soft skin is usually attacked, as the snout, neck, belly and inside of the legs. The parasite is present in the pustules in enormous numbers. The outlook for recovery is doubtful, as the parasites are so deep that parasiticides do not reach them. In case the animals are market- able, they should be sen
. Cyclopedia of farm animals. Domestic animals; Animal products. SWINE SWINE 655 The Demodex folliadorum, causing the other vari- ety of hog mange, lives deep in the hair follicles and sebaceous glands. Its presence causes pustule formations, which rupture and leave small ulcers on the skin. The soft skin is usually attacked, as the snout, neck, belly and inside of the legs. The parasite is present in the pustules in enormous numbers. The outlook for recovery is doubtful, as the parasites are so deep that parasiticides do not reach them. In case the animals are market- able, they should be sent to the butcher at once. Otherwise the treatment as recommended in sar- coptic mange may be tried, but the course of treat- ment will be necessarily prolonged. [For further information on mange and lice in hogs, see Bureau of Animal Industry, Bulletin No. 69.] Verminous bronchitis. This is a common disease of pigs in certain localities, characterized by an inflammation of the bronchial tubes with paroxysms of coughing and stunting of the growth. The cause is a small round worm, the Strongylus paradoxus, about one inch in length and of the thickness of a thread. It may be present in enormous numbers and completely plug the small bronchial tubes mechanically, giving rise to irritation of the lining membrane. The disease A large per- The. Fig. 660. Dipping pigs for mange and lice. Ready for the plunge. (Peters.) is most frequent among young pigs, centage of the animals are usually affected, owner's attention is first attracted by the parox- ysms of coughing, which are very constant. This continues over many weeks; the growth of the animal is stunted and emaciation becomes marked. The diagnosis is made positive in case of doubt by killing one of the worst affected animals and exam- ining the lungs for the presence of the parasites. In making this examination, it is important to open the bronchial tubes longitudinally with the scissors and not crossways, as the worm may be readily
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