. Clinical diagnostics of the internal diseases of domestic animals. Veterinary medicine; Diagnosis, Veterinary; Veterinary medicine. GENERAL PART OF EXAMINATION. 55 d. Sarcoptic mange. Seen in the horse, dog, swine and cat, etc. This mite burrows tunnels in the epidermis, causes nodules, crust formation, thickening and folding of the skin, pruritis. Most difficult mite to capture for microscopical examination; to obtain material for examination the skin should be scraped to bleeding. Sarcoptes are very small, turtle-shaped mites measuring — mm head horse-shoe shaped, legs short and stum
. Clinical diagnostics of the internal diseases of domestic animals. Veterinary medicine; Diagnosis, Veterinary; Veterinary medicine. GENERAL PART OF EXAMINATION. 55 d. Sarcoptic mange. Seen in the horse, dog, swine and cat, etc. This mite burrows tunnels in the epidermis, causes nodules, crust formation, thickening and folding of the skin, pruritis. Most difficult mite to capture for microscopical examination; to obtain material for examination the skin should be scraped to bleeding. Sarcoptes are very small, turtle-shaped mites measuring — mm head horse-shoe shaped, legs short and stumpy. e. Acarus mange. Most common in dogs and swine, ap- pearing principally on the eyelids, head, extremities, causing little itching. Skin covered with scales, small pustules, and is thickened and folded. In the squamous form circumscribed, bald, bluish-red areas occur, epidermis mother-of-pearl-like, scaly. The parasite is vermiform, — mm with a long, narrow, jointed body, the anterior portion carrying four pairs of short, three- jointed feet, at the end of each, three pointed hooks. Eggs spindle- shaped. III. Skin Diseases Due to Plant Parasites. Ringworm (Herpes tonsurans) is induced by the fungus Tri- chopyton tonsurans. The disease is characterized by the appear- ance of small round, well-defined hairless patches. The smooth skin is covered with grey-colored, asbes- tos-like crusts. Spontaneous healing begins in the center of the lesion, extending toward the periphery ("ringworm"). Vesi- cles rarely appear. Most common in the ox. In the crusts and more especially in the hair follicles great numbers of round or ovoid, light-refracting spores can be seen with the aid of the microscope. The spores measure 4u. Some of the spores are arranged in regular order, like a string of beads, others are disposed in irregular groups. The filaments, which may be sim- ple or jointed, show little tendency to branching; their free ends are rounded. Favus. Rare, but appea
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectveterin, bookyear1912