Report of the Live Stock Sanitary Board of the State of Wisconsin

Report of the Live Stock Sanitary Board of the State of Wisconsin

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1905 edition. Excerpt: the herd for some time, but no particular attention had been paid to the matter, although the herd had not done first rate for about two years. 'In Nlovember, 1902, an animal calved and after this began to decline. She died in March, 1903. A post mortem examination made by a local veterinarian showed the presence of the disease in the lungs, mediastinal glands and a slight involvement of the mesenteric lymphatics. The herd was then tested under the auspices of the Live Stock Sanitary Board, and it was found that 37 out of 7O reacted to the test. A post mortem examination was held on seven of the reacting animals. Otnly two of these showed any-marked infection, the remainder being affected in the earliest stages. The disease seemed to be quite generally distributed so far as different organs were concerned, but the extent of the diseased lesions in their tissues was very slight. The degree of infection in these cases was so slight that the owner decided to hold the balance of the reacting animals in quarantine and at tempt to fatten them, the idea being to send same in the fall to. some municipal abattoir where they could be slaughtered under federal supervision. This very mild type of the disease noted in this case is occasionally found and it was thought desirable to take samples of tissue from these animals and make a study of the virulence of the organism when isolated 'in pure culture. In attempting to explain the reason why the virulence of tuberculosis, or in fact any other disease, is subject to such wide spread fluctuations in different cases, one must remember that we are here dealing with two factors that may be subject to variation, viz., (1) the possible variation in the virulence of the organism causing more

Product details

  • Paperback | 26 pages
  • 189 x 246 x 1mm | 68g
  • United States
  • English
  • black & white illustrations
  • 1236889754
  • 9781236889751