Some points in connection with the pathology and epidemiology of swine fever / by J.P. MʻGowan.

  • MʻGowan, J. P. (John Pool)
Date:
1915
Catalogue details

Licence: Public Domain Mark

Credit: Some points in connection with the pathology and epidemiology of swine fever / by J.P. MʻGowan. Source: Wellcome Collection.

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    four others were very ill, though able to stand; while the others were obviously ailing. Owing to the mud-stained condition of the animals it was impossible to tell if diarrhcea or a rash was present. The pigs were obviously fevered, as they drank greedily the water from the pools on the floor. Several of them were standing with their hind legs crossed, heads drooping, eyes nearly closed, and chests heaving. One specimen was obtained from this outbreak—viz., pig 1. fie? 1, Small pig; lately weaned ; showed during life all the symptoms just described, being one of the group designated as being veryill. It was killed by a blow on the head with a hammer. Post-mortem.'—No petechiz or skin rash was observed: there was a fair amount of subcutaneous fat. Lungs: right middle lobe consoli- dated, deep red in colour and adherent to the adjacent lobes. Anterior lobe——patches of red consolidation, with remainder of lobe showing acute congestion. Posterior lobe showed acute congestion. Left anterior lobe completely consolidated, grey in colour, with some abscesses and pleurisy. Posterior lobe—acute congestion and marked hemorrhages. Trachea filled with frothy mucus. Heart apparently healthy. Lymphatic glands all through the body greatly enlarged and deeply red in colour. Abdomen: duodenum inflamed. Small intestine very markedly inflamed and congested, with numerous hemorrhages. Large intestine inflamed, but no fibrinous exudate or ulcers present. Liver, spleen, gall-bladder, pancreas, kidney, stomach, apparently healthy. Cultures were made from various organs with the following results: Liver, spleen, gall-bladder, right kidney—no growth. Heart blood (one cubic centimetre inoculated with a pipette)?: Culture tube 1, pure extensive culture of small dewdrop colonies; Tube 2, do. do. Lung: right middle lobe—Tube 1, pure culture of 100 (circa) small dewdrop colonies ; Tube 2, pure culture of uniform growth small dew- drop colonies; Tube 3, pure culture of 200 (cerca) small dewdrop colonies. Left anterior lobe—Tube 1, pure culture of 50 (cerca) small dewdrop colonies ; Tube 2, pure culture of 20 small dewdrop colonies ; Tube 3, pure culture of uniform growth small dewdrop colonies. 1 With regard to the post-mortem examinations done in this investigation, it should be noted that, almost without exception, they were performed zmmediately on the death of the animal. 2 The technique of the heart-blood culture, in this and in all the cases where it was done, was as follows: The pericardial sac was opened into, the surface of the heart seared, and a sterile glass pipette was plunged through the seared portion of the heart wall, and blood was then sucked up into the pipette by means of a rubber teat. The rubber teat was separated from the cavity of the pipette by means of a cotton-wool plug. About one cubic centimetre of the blood so obtained was inoculated on the surface of an agar tube.
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