Value of Tuberculin in the Control of Tuberculous Herds
The book Value of Tuberculin in the Control of Tuberculous Herds was written by author Moore, Veranus A. (Veranus Alva), 1859-1931 Here you can read free online of Value of Tuberculin in the Control of Tuberculous Herds book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Value of Tuberculin in the Control of Tuberculous Herds a good or bad book?
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The conclusion seems to be warranted tiiat these animals were in- fected while associating with the diseased cattle, and that the lesions had become arrested before the first test was made. The lesions in those ex- amined post mortem were too old and the tests were made too frequently to suspect that they could have started and reached the stage of development found in the short time between tests. The repeated tests of the reacting animals in the same herd support this hypothesis. The tubercul...in test, made three months later, showed fully 25 per cent, of non-reactors. Several of these continued not to respond, while others reacted again later. This oscillating of the morbid process between an active and an arrested condition is an important factor in considering the future of the supposed healthy animals and in interpreting the tuberculin reaction. In addition to the value of tubercuUn in eradicating tuberculous infection from a herd it is indispensable in examining cows to be purchased in order to prevent its introduction.
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