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

  • Mosselman, Gustave.
Date:
1894
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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.

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    supplied a milk very rich in streptococci; that from the cow quickly showed an acid reaction and became clotted; the udder finally became inflamed. Inocu- lation in the mamma of a nursing bitch remained without effect; the dog, cat, rabbit, and guinea pig were also unaffected by intra-venous and intra peri- toneal inoculations. Etiology.—The disease is communicated through the intermediation of those who have charge of the milking of the cows, their hands being soiled with the diseased milk. When the latter is mixed with good milk this also takes the same characters. Con- tagion to the cows must, therefore, be prevented by disinfection of the hands, and contagion to the nor- mal milk by keeping the milk from the diseased cows in separate vessels. Such milk is, moreover, unfit for human consumption. Besides this disease, remarkable on account of its extreme contagiousness, the udder of the cow is sub- ject to various microbic lesions. M. Lucet especially called attention to infectious forms of mammitis due to an external cause; in a series of cases of acute mammitis he found one or several germs; these were sometimes micrococci, sometimes bacilli, and some- times both together. Penetration of the germs most frequently occurs through solutions of continuity of the integument of the udder. The microbe being different in different cases, we can readily under- stand that the severity of the disease will be very variable. Among the number of infectious forms of mam- mitis with internal cause tubercular mammitis should be especially mentioned.