The results of the use of tuberculin in the Castlecraig herd belonging to Sir T. D. Gibson Carmichael / by James Wilson.

Date:
1896
Catalogue details

Licence: Public Domain Mark

Credit: The results of the use of tuberculin in the Castlecraig herd belonging to Sir T. D. Gibson Carmichael / by James Wilson. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    for dealing- with the disease. This animal has never, like the other Aberdeen-Angus cows, suckled her calves, but has been used, since January 1894, a dairy cow. She has thus, for nearly three years, summer and winter, been with the other dairy cows, 50 per cent, of which were found to be tuberculous at the second testing in January 1896. This Aberdeen-Angus cow now referred to did not then re-act, for which, in all probability, we must blame the tuber- culin, although there is just a small chance that she may have been infected since January last by another dairy cow that had, in the meantime, to be bought in and was found at the recent testing to be unsound. A point of some interest in connection with this new re-acting cow, and bearing, perhaps, upon the hereditary “predisposition” theory is that she is one of the old Castlecraig stock which, until now, have not produced a single re-acting animal. Further than being separated from the healthy, the tuberculous animals have received no other special treatment. The usual treatment has been for all animals excepting bulls to be pastured in summer and fed on turnips and hay or straw in winter. Old and heavy milking cows and one and two-year-old heifers have received a small quantity of concentrated food in winter, and animals being prepared for the butcher or show and young bulls have been more liberally treated. It has long been a general rule that every animal shall be outside daily during winter when the weather permits, and this rule has been more strictly adhered to since the time of the first testing. Such treatment has been given to all, sound and tuberculous alike. The following circumstances may be specially mentioned in connection with the tables of temperatures :—
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