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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![It will be seen that in all 818 sheep were examined, and the sarcocyst was found, in the sense defined at the beginning of this chapter, present in 553—1z.., in 67°6 per cent. Table II. will show this, as also the number present during each month. TABLE II. Percentage A 8 t Spam! Preetat Uo peed January . . : 100 32 32°0 February 20) 09h oe 318 196 61°6 March . x ; 221 184 83.2 Aa) ty » ‘ 179 141 78°6 Altogether . 818 553 ~67°6 Passing over the actual percentages found, one sees that the percentage number affected increases (with the exception of a slight lowering in April as compared with March, which may be accidental) gradually from January to April. Corresponding with this, one sees from Table III. that the percentage of highly DEFINITE NUMBERS OF PARASITES PER 10-15 MILLIGRAMMES. Number of Sarcocysts found in 10-15 milligrammes. 1 2 BAS Mew OF Bat OM LO TL ee S ae oh TGs aie ae Weis LOR 20 6 Se . | 64°7}19°3/9°6)1 | 25) 1 bint Mi seseed Oreos ora wy tates lh Dil ister MOne caME ipl (cece Aficidan tL wleestllve sat] (OPE | 40°F 0 218 er 6 eh 2 ea Ao eee le Oran Gost cil lane ah sete); Wert eiey q CSO Wi iarehnl Veem IO kee 2 BSB 1 202 | 98771. 6:9) 119) 7 4A 2571 2 Seht 1 8 OG] 297% 1026 10761676.) i281) 2. 1 O64. v1 Oe6 It will be seen from this table that as we advance from January to April the per- centage of infected sheep with large numbers of sarcocysts per 10-15 milligrammes becomes greater and greater, while the percentage with small numbers gets corre- spondingly less. —- infected sheep also gradually rises during the same time, and that the percentage with both neck and diaphragm affected shows a similar increase, as Table IV. demonstrates.](https://iiif.wellcomecollection.org/image/b32862040_0142.jp2/full/800%2C/0/default.jpg)
