Bairden K, Frankena K, Parkins J J, Armour J, Kloosterman A
Department of Veterinary Parasitology, Glasgow University Veterinary Hospital, Glasgow University.
Res Vet Sci. 1992 Jan;52(1):22-7. doi: 10.1016/0034-5288(92)90053-5.
An experiment was carried out simultaneously in Glasgow and in Wageningen to investigate possible differences between the local strains of Ostertagia ostertagi and Cooperia oncophora. In each location calves of the local Friesian breed were infected with 100,000 larvae of either the Glasgow or Wageningen strain of O ostertagi or C oncophora. At both locations the calves received the same diet. The Glasgow strain of O ostertagi was more pathogenic than the Wageningen strain and a larger proportion of the worm burden was found in the abomasal mucosa. The number of ova per female was greater in the Wageningen strain. For C oncophora the Wageningen strain gave rise to higher worm burdens and longer worms. Differences were also present between locations. The British Friesians had higher worm burdens of C oncophora and the worms of this species were longer in this host. Compared with the Dutch Friesians the British calves had a higher proportion of O ostertagi in the mucosa. This experiment showed how difficult it is to compare data from the literature because of differences in parasite and host strains and laboratory techniques.
在格拉斯哥和瓦赫宁根同时进行了一项实验，以研究奥斯特他线虫和牛副蛔虫当地菌株之间可能存在的差异。在每个地点，当地弗里斯兰品种的犊牛感染了100,000条奥斯特他线虫或牛副蛔虫的格拉斯哥或瓦赫宁根菌株的幼虫。在两个地点，犊牛都接受相同的饮食。奥斯特他线虫的格拉斯哥菌株比瓦赫宁根菌株更具致病性，并且在皱胃黏膜中发现的虫体负担比例更大。瓦赫宁根菌株中每只雌虫的卵数更多。对于牛副蛔虫，瓦赫宁根菌株产生的虫体负担更高且虫体更长。不同地点之间也存在差异。英国弗里斯兰犊牛的牛副蛔虫虫体负担更高，且该物种的虫体在该宿主中更长。与荷兰弗里斯兰犊牛相比，英国犊牛黏膜中奥斯特他线虫的比例更高。该实验表明，由于寄生虫和宿主菌株以及实验室技术的差异，比较文献数据是多么困难。
