Manual of veterinary microbiology / by Professors Mosselman and Liénaux ; translated and edited by R.R. Dinwiddie.

  • Mosselman, Gustave.
Date:
1894
Catalogue details

Licence: Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

Credit: Manual of veterinary microbiology / by Professors Mosselman and Liénaux ; translated and edited by R.R. Dinwiddie. Source: Wellcome Collection.

    183/360 (page 179)
    of duck cholera are a little larger than those of chicken cholera. Like the latter they do not admit of double staining. Their culture on the different solid media is richer than that of chicken cholera. This peculiarity is es- pecially noticeable upon potato, which is a very bad field for the growth of the organism of chicken cholera, whilst that of duck cholera grows very well on this medium. Whilst chicken cholera is pathogenic for ducks, duck cholera is inoffensive for chickens and pigeons. The latter disease does not even kill all ducks with the same rapidity; some species resist for a longer time than others. The rabbit succumbs to duck cholera as well as to chicken cholera, but requires a larger dose of the former than of the latter. It might be thought that the virus of duck cholera was an attenuated form of that of chicken cholera. But inoculation of the former to the chicken ought then to vaccinate against the latter disease, which is not the case. The penetration of the germs, in the case of spon- taneous contamination, takes place by the digestive canal; this mode of infection has also been demon- strated experimentally. The experimental disease can also be communicated by hypodermic injection.* * [Several other microbic diseases of fowls have been described: Vibrio-cholera of chickens (Vibrio Metschnikovi, Gameleia) in Russia,—caused by an organism presenting morphological and cultural resemblances with that of Asiatic cholera; septicaemia in geese (Spirochsste anserina, Sakharoff) in swampy regions of Transcaucasia—a spiral microbe resembling that of relapsing fever