Al-Saqur I M, Altaif K I, Al-Zubaidy A J
Vet Parasitol. 1981 Dec;9(2):133-43. doi: 10.1016/0304-4017(81)90032-7.
The response of Awassi sheep to ostertagia circumcincta, the most prevalent ovine strongylid species in Iraq, was studied. A dose of 100000 larvae of O. circumcincta (Iraqi strain) induced moderate clinical symptoms of ostertagiosis. These symptoms were correlated with elevated pH of the abomasal fluid and increased plasma pepsinogen levels. There was no evidence of larval inhibition since the majority of the fourth stage larvae (L4) continued their development. No appreciable loss of worm population was observed and most of the parasites survived and exhibited a prolific egg-laying potential six months after initial infection. Assessments of the pathophysiological changes were performed and correlated with parasitological and clinical observations. The Awassi breed of sheep, the most prevalent in the Arab Middle East, seems to be more susceptible to ostertagiosis than other breeds and there was no spontaneous self-cure in this breed.
研究了阿瓦西绵羊对伊拉克最常见的绵羊圆线虫种类——环形奥斯特线虫的反应。一剂100000条环形奥斯特线虫（伊拉克株）幼虫诱发了中度奥斯特他线虫病临床症状。这些症状与皱胃液pH值升高和血浆胃蛋白酶原水平增加相关。由于大多数第四期幼虫（L4）继续发育，没有幼虫抑制的证据。未观察到明显的虫口数量损失，大多数寄生虫存活下来，并在初次感染六个月后表现出旺盛的产卵潜力。进行了病理生理变化评估，并将其与寄生虫学和临床观察结果相关联。阿瓦西绵羊品种是阿拉伯中东地区最常见的品种，似乎比其他品种更容易感染奥斯特他线虫病，且该品种没有自发自愈的情况。
