育成乳牛のノミ大量寄生例 [in Japanese] Massive Infestation of Fleas in Dairy Rearing Calves [in Japanese]
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オガクズ敷料を用いたパドック内の育成乳牛9頭にネコノミの大量寄生を認めた. 全例で掻痒, 4頭に軽-中等度の貧血, 2頭に下痢, 衰弱などがみられた. 有機リン剤の体表散布と犬用ノミとり首輪の装着で寄生数は著減したが, その後導入された新生子牛に導入後3日に寄生が認められ, 駆除のためには, これらの処置だけでは不十分であった.
Heavy infestation of cat flea, Ctenocephalides felis, with itching sense was found in 9 dairy rearing calves kept in a paddock with saw dust floor mat. Four calves showed mild to moderate anemia. After treatment for one month with organo-phosphoric insecticide or carbamates, infesting fleas were remarkably decreased and simultaneous recovery from anemia was observed. However, fleas were again found on severed other new calves 3 days after their introduction to that paddock, suggesting that treatment was insufficient.
- Journal of the Japan Veterinary Medical Association
Journal of the Japan Veterinary Medical Association 50(2), 92-94, 1997-02-20
Japan Veterinary Medical Association