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Chick rearing: VI. The bacterial syndrome encountered in epidemic bacillary white diarrhoea of chicks (pullorum disease)

Published online by Cambridge University Press:  27 March 2009

T. Barton Mann
T. Barton Mann
Affiliation:
Biological Research Laboratory, Weatherstones, Neston, Wirral
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Extract

The bacterial syndrome encountered in epidemic bacillary white diarrhoea of chicks (pullorum disease) is initially one of invasion by faecal type organisms, this is followed by invasion by anaerogenic B. pullorum.

Evidence is presented to show that ostensibly pure cultures of anaerogenic B. pullorum, consist of two organisms, a true aerogenic B. pullorum in symbiosis with an anaerobe, morphologically of the welchii type.

Evidence is presented to show that variation in fermentation reactions of ostensibly pure cultures of anaerogenic B. pullorum depend upon the degree of symbiosis exerted between the anaerobe and the aerobe and this degree of symbiosis is greatly affected by methods of cultivation on solid media.

It is proposed that the ovarian blight peculiar to adult hens which are carriers of bacillary white diarrhoea infection is caused by putrefaction of ovarian material in vivo by the activities of a morphologically welchii type organism.

It is proposed that B. pullorum exists in one form only, namely, the aerogehic form, and that this organism is a potential pathogen only.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 35 , Issue 4 , October 1945 , pp. 214 - 224
Copyright
Copyright © Cambridge University Press 1945

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