Bulletin Volume 83-105

Bulletin Volume 83-105

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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. 1897 edition. Excerpt: ...MORE COMMON PARASITIC DISEASES OF LAMBS. BY JOS. E. WING. THE LUNG PARASITES. More or less knowledge of the parasites of the lungs has been in possession of sheep owners for many years. Powers, in his very valuable work on "The American Merino," gives a very clear description of them and states that in 1882, the season being wet, the mortality among the lambs was very great throughout Ohio. It is probable that these parasites are not now so numerous or so destructive as they once were, when more sheep were kept and flocks were larger, yet evidence in plenty exists to show that they are very widely spread over the state and that they cause much loss, not only by death but more often by lowering the vitality so that the lambs do not thrive as they should. There are three species of parasites that work harm in the lungs or bronchial tubes of the sheep: 1. The white thread-worm (Sirongylus filaria), which inhabits the tubes of the lungs. 2. The red thread-worm Strongy/us rufcsccns), which is found in patches or nodules in different parts of the structure of the luugs. 3. The hair lung-worm (Pseudalius ovis), which is coiled up in small, tubercle-like spots throughout the lung structure, and is often very abundant on the surface of the lungs, directly underneath the pleural membrane THE White Thread-worm (Slrongylus filaria). This is the best known of the lung-worms, perhaps because the most easily found. Shepherds have for a long time been accustomed to slitting the windpipe and larger bronchial tubes in search for the masses of threadlike worms that are often found there, sometimes almost blockiug up the tubes so as to make breathing very difficult or impossible. Concerning the life history of this worm there is not much definitely...show more

Product details

  • Paperback | 254 pages
  • 189 x 246 x 13mm | 458g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236815106
  • 9781236815101