The study was performed to survey the Sarcoptic mange in sheep and the effect of infection on the local strains during a specific period in different regions of Riyadh, Saudi Arabia. A total of 1745 sheep were examined clinically and were selected from the suspected cases for laboratory investigation of skin scrapings for disease diagnosis. The examined animals included (509) Naimi, (396) Najdi, (518) Hurri, and (322) Rufidi native sheep.

The results showed that the infestation rate was (12.77%) in all sheep. The highest strain was recorded (17.2%, 14.3%, 9.6%, and 8.6%), respectively. The infestation was highest in sheep over two years of age (15.2%) while it was lowest in sheep under two years of age (11.2 %). In addition, the infection rate in females was higher than in males. The prevalence of mange mites in females was (14%) compared to (11.2%) in males. The highest percentage of infestation was recorded in the head region at 67.2%, followed by that in the neck (4.4%), back (16.5%), tail (11.6%), and legs (0%).

The presence of mange mites was discovered by microscopic examination of deep skin scrapings of infected animals that were identified morphologically. The infection was assured by histological investigations. This study revealed that mange mite is one of the most significant sheep health constraints in Riyadh. Therefore, proper prevention measures must be implemented to take into consideration other non-host-related risk factors.

该研究旨在调查沙特阿拉伯利雅得不同地区特定时期绵羊中的疥癣以及感染对当地菌株的影响。共对1745只羊进行了临床检查，并从疑似病例中挑选出皮肤刮屑进行实验室检查以进行疾病诊断。检查的动物包括 (509) Naimi、(396) Najdi、(518) Hurri 和 (322) Rufidi 本地羊。

结果表明，所有绵羊的侵染率为（12.77%）。分别记录了最高应变（17.2%、14.3%、9.6% 和 8.6%）。两岁以上羊的侵染率最高（15.2%），而两岁以下羊的侵染率最低（11.2%）。此外，女性的感染率高于男性。疥螨在女性中​​的流行率为（14%），而男性为（11.2%）。头部区域的感染率最高，为 67.2%，其次是颈部 (4.4%)、背部 (16.5%)、尾部 (11.6%) 和腿部 (0%)。

疥螨的存在是通过对受感染动物的深层皮肤刮屑进行显微镜检查而发现的，这些刮屑在形态上已被鉴定。组织学检查证实了感染。这项研究表明，疥螨是利雅得最严重的绵羊健康限制之一。因此，必须采取适当的预防措施，以考虑其他与宿主无关的风险因素。