Relationship of nematode cholinesterase activity and nematode burdens to the development of resistance to trichostrongyle infections in sheep
作者： P.G.C. Douch , G.B.L. Harrison , L.L. Buchanan , K.S. Greer
DOI: 10.1016/0304-4017(88)90044-1
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摘要: Abstract The changes in nematode cholinesterase (ChE) activities were examined relation to the development of resistance (1) a flock young grazing sheep, (2) and penned sheep treated with dexamethasone (3) receiving single mixed infection. Nematodes from high faecal egg counts (FECs) had higher ChE than those low FECs. Female nematodes tended have males, both decline increasing age sheep. female Trichostrongylus colubriformis activity was associated worm length utero count. No observed when dexamethasone. T. established immunosuppressed declined 10–20 fold 8 weeks after cessation treatment. Nematode burdens small intestine abomasum significantly correlated, individual species they also correlated activities. elimination adult is discussed gastrointestinal mucosal globule leucocyte numbers, mucus antiparasite impairment metabolic function.
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