Aids to stockowners / by J. Walker.

  • John Walker
Date:
1930
Catalogue details

Licence: In copyright

Credit: Aids to stockowners / by J. Walker. Source: Wellcome Collection.

    72/198 page 54
    Swine abortion is a well-known disease in such well-known pig breeding countries as Germany and the United States. It is due to one of two organisms both of which have a wide distribution. The symptoms, pathology, treatment and prevention of this disease is very similar to what has already been described under bovine contagious abortion. Stockowners are advised to be on the qui vive for this disease and to send to the laboratory for examination aborted swine foetuses without the addition of any preservative. CONTAGTOUS ABORTION IN EWES. This condition has not yet been diagnosed in this Colony, but as it occurs in Europe and other parts of the world its incidence here may only be a matter of time. Sheep farmers are, therefore, advised to he on their guard for the appearance of this disease in their flocks and on the slightest suspicion that it exists, should communicate with the Laboratory without delay. CONTAGIOUS GRANULAR (NODULAR) VAGINITIS. This is another disease which has never been accurately diagnosed in this Colony but whose presence has been sus¬ pected by many competent authorities. This disease is very contagious and is spread by copulation or by other means which might introduce infection into a healthy vagina. It may complicate contagious abortion, but it may exist independently of that disease. Although it runs a mild course it may cause temporary sterility and frequent returning to the bull, though as a cause of sterility its role has been greatly over-estimated. When the disease is rampant in a herd and many cows are sterile other factors are responsible, e.g. contagious abortion, functional sterility or pathological lesions in the ovaries and sexual canal. Cause is a minute organism present in enormous numbers in the vaginal discharge which is thus very infectious. Symptoms.—There may be few or no constitutional dis¬ turbances. There may he slight glairy vaginal discharge, which later tends to become muco-purulent. Frequent urina¬ tion, straining, erection of the clitoris and eontant returning to the bull are common symptoms which are very similar to what are found in nymphomaniacs.
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