Differences between female and castrated male lambs in susceptibility to natural, predominantly Teladorsagia circumcincta infection.
Differences between female and castrated male lambs in susceptibility to natural, predominantly Teladorsagia circumcincta infection.
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雌性和阉割的雄性羔羊对自然感染（主要是 Teladorsagia circcincta 感染）的易感性差异。
DOI：
10.1016/j.vetpar.2014.08.024
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发表时间：
2014
影响因子：
2.6
通讯作者：
Abuargob O
中科院分区：
文献类型：
--
作者：
Abuargob O
在一群苏格兰黑脸羊中，研究了去势公羔羊和整只母羔羊对胃肠道线虫感染的易感性之间的差异。去势公羔羊粪卵数较高，体重较高，寄生虫特异性血浆伊加活性较低，线虫成虫较多。环纹Teladorsagia circumcincta成虫的体长无明显差异。雄性产卵量越大，蠕虫负担越大。血浆伊加活性的差异可能是大量成虫抑制粘膜伊加转移至血浆的结果。产卵量的性别差异至少有一部分可能是由于雄性摄食了大量的草，因此由于它们的体型较大，感染的幼虫数量较多。阉割的男性和女性之间的差异有助于观察到的变化，在自然感染的羔羊线虫卵生产。
The difference between castrated male lambs and entire female lambs in susceptibility to gastrointestinal nematode infection was investigated in a flock of Scottish Blackface sheep. Castrated male lambs had higher faecal egg counts, higher body weights, lower parasite-specific plasma IgA activity and more adult nematodes. There were no detectable differences in the length of adultTeladorsagia circumcincta. Heavier egg shedding by males was associated with greater worm burdens. The difference in plasma IgA activity may have been a consequence of larger numbers of adult nematodes inhibiting the transfer of mucosal IgA to the plasma. At least part of the sex difference in egg production could be a consequence of males ingesting larger amounts of grass and hence numbers of infective larvae because of their larger size. The differences between castrated males and females contribute to the observed variation in nematode egg production in naturally infected lambs.
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影响因子：
2.2
作者：
Lee CY;Munyard KA;Gregg K;Wetherall JD;Stear MJ;Groth DM
通讯作者：
Groth DM
影响因子：
56.9
作者：
Graham, Andrea L.;Hayward, Adam D.;Nussey, Daniel H.
通讯作者：
Nussey, Daniel H.
影响因子：
2.4
作者：
Murphy, L.;Eckersall, P. D.;Stear, M. J.
通讯作者：
Stear, M. J.
苏格兰黑脸羔羊自然线虫感染后粪便卵数的变化
影响因子：
2.4
作者：
M. Stear;O. Abuagob;M. Benothman;S. Bishop;G. Innocent;A. Kerr;Stewart Mitchell
通讯作者：
Stewart Mitchell
影响因子：
2.4
作者：
A. H. Waddell;W. Jarrett;M. Murray
通讯作者：
M. Murray