Investigation into the disease of sheep called "scrapie" (Traberkrankheit, la tremblante) : with especial reference to its association with sarcosporidiosis / by J.P. M'Gowan ; with an appendix on a case of Johne's disease in the sheep.
- M'Gowan, J. P. (John Pool)
- Date:
- 1914
Licence: Public Domain Mark
Credit: Investigation into the disease of sheep called "scrapie" (Traberkrankheit, la tremblante) : with especial reference to its association with sarcosporidiosis / by J.P. M'Gowan ; with an appendix on a case of Johne's disease in the sheep. Source: Wellcome Collection.
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![Friedberger and Frohner (6) quote the following cases— viz.: (1) Lameness in a bull; difficulty in rising (and indeed » complete muscular paralysis), recorded by Brouwier and Toker- enko); (2) in two pigs loss of appetite, continual lying, arch- ing of back, irregular movements of the hinder parts, pain in the muscles when pressed, hoarseness and fever, trichinosis at first suspected; after slaughtering, the muscles were found to be watery, opaque, and permeated by numerous sarcosporidia. They further state that, according to Hertwig, Miescher’s tubes were SO numerous in six pigs that the muscular preparations contained as much of tubular as of fibrous matter. The flesh was consequently flabby, extremely watery, and its section surface assumed after a few hours a pale-green colour. Teichmann (8) gives the following account, for which he states he is indebted to Dr Neubauer, Superintendent of the town slaughter-house at Frankfort-on-Maine :— Swine are very heavily infected, and the whole body musculature is attacked. Symptoms of paralysis are especially present in the hinder extremities. 1n any case, the muscle in massive infection is markedly changed. It bécomes gelatinous and watery looking. These changes can be so bad that the flesh cannot be used and must be destroyed. Neumann (9) quotes the following cases :— Virchow has observed in some pigs which were affected, feebleness or intermittent paralysis of the hind-quarters, ardent thirst, a nodular exanthem, transient symptoms of rouget, and in one instance lachryma- tion and a dull appearance of the eyes which might be due to the presence of the parasites in the muscles. [Italics mine—J. P. M‘G.] He states further :— Schulze has met with these parasites (sarcosporidia) in the muscles of the fore leg of a horse killed because of being affected with paralysis of the anterior limbs. These muscles were degenerated, and showed calcareous granules twenty mm. long by three mm. broad. Watson (10) instances the following cases as having come under his own personal observation :— Case 1. Heifer three years old, said to have developed symptoms of “loco”! poisoning as a yearling. Received at quarantine station 27th October 1907. Stunted undersized appearance and in poor 1 A disease of the nervous system caused by eating a poisonous plant.—[J. P. M‘G.]](https://iiif.wellcomecollection.org/image/b32862040_0110.jp2/full/800%2C/0/default.jpg)
