. and geese, performs the func- tions of a crop. The pres- ence of the parasites causes a distention of the gullet and a condition quite similar to dis- tention of the crop in fowls. The infested birds display ar- rested development, emacia- tion, difficult locomotion, epi- leptic movements, somnolence and lack of appetite. Death is frequently due to asphyxia resulting from over disten- tion of the gullet. At autopsy it is observed that the galleries formed by the worms appear as whitish curved lines which stand out prominent relief against m the congested mucosa. Mi- croscopic examination of
. and geese, performs the func- tions of a crop. The pres- ence of the parasites causes a distention of the gullet and a condition quite similar to dis- tention of the crop in fowls. The infested birds display ar- rested development, emacia- tion, difficult locomotion, epi- leptic movements, somnolence and lack of appetite. Death is frequently due to asphyxia resulting from over disten- tion of the gullet. At autopsy it is observed that the galleries formed by the worms appear as whitish curved lines which stand out prominent relief against m the congested mucosa. Mi- croscopic examination of the tissue will reveal the presence in the galleries of the worms and their eggs. Positive diagnosis is diffi- cult during life unless micro- scopic examination is made of the feces or of water with which the crop has been rinsed. Fig. 23. Trichosoma contortum. A, caudal extremity of female; B, eggs from the uterus in various stages; C, caudal ex- tremity of the male. Enlarged 300 diam- eters. (Railliet) Treatment may consist of administering two tablespoonfuls of a mixture of turpentine with twice its volume of olive oil. Filaria cygni has been observed in the intestine and ceca of a swan which was exceedingly emaciated. TAPEWORMS General character. Tapeworms, also designated cestodes, con- stitute important parasites of the intestines of birds. When present in large numbers they occasion a disease designated tseniasis. The individual worm is composed of a head called the scolex and a
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectbirds, booksubjectpou
