Prepatent periods of different Oesophagostomum spp. isolates in experimentally infected pigs

被引：0
|
作者：
H. Talvik
C. M. Christensen
A. Joachim
A. Roepstorff
H. Bjørn
P. Nansen
机构：
[1] Danish Center for Experimental Parasitology,
[2] The Royal Veterinary and Agricultural University,undefined
[3] Bülowsvej 13,undefined
[4] DK-1870 Frederiksberg C,undefined
[5] Denmark Fax: +45 35 28 27 74 e-mail: CMC@vetmi.kvl.dk,undefined
[6] Estonian Agricultural University,undefined
[7] Kreutzwaldi 62,undefined
[8] EE2400 Tartu,undefined
[9] Estonia,undefined
[10] Institut für Parasitologie,undefined
[11] Tierärztliche Hochschule Hannover,undefined
[12] Bünteweg 17,undefined
[13] D-30559 Hannover,undefined
[14] Germany,undefined
[15] Department of Pharmacology and Pathobiology,undefined
[16] The Royal Veterinary and Agricultural University,undefined
[17] Bülowsvej 13,undefined
[18] DK-1870 Frederiksberg C,undefined
[19] Denmark,undefined
来源：
Parasitology Research | 1997年 / 83卷
关键词：
Fecal Sample; Separate Experiment; Treatment History; Infective Larva; Prepatent Period;
D O I：
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摘要：
To define prepatent periods of different Oesophagostomum spp. isolates we carried out two separate experiments, one using two monospecific laboratory isolates and another using laboratory isolates as well as isolates obtained from pig herds having different management systems and with different anthelmintic treatment histories. Pigs were inoculated with 1,000–2,000 infective larvae. Fecal samples were collected daily beginning on days 15 and 16 postinoculation (p.i.). Fecal cultures were set up at different times to yield larvae that could be identified by DNA analyses. All pigs started to excrete eggs on days 18–24 p.i. The mean prepatent period was 20.2 ± 1.4 days, with no significant difference being observed between species and isolates. Prepatent periods of 17–19 days were found for the monospecific laboratory isolates of O. dentatum and O. quadrispinulatum. These findings conflict with parasitology textbooks; therefore, suggestions as to the possible reasons for the observed short prepatent periods are given.
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页码：563 / 568
页数：5
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