Khedri Javad, Radfar Mohammad Hossein, Borji Hassan, Azizzadeh Mohammad
Dept. of Pathobiology, School of Veterinary Medicine, Bahonar University of Kerman, Kerman, Iran.
Dept. of Pathobiology, School of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran.
Iran J Parasitol. 2016 Apr-Jun;11(2):221-225.
This study aimed at investigating the prevalence and risk factors of bovine thelaziosis, performed in the southeast of Iran, an endemic area for Iranian Sistani cattle.
Between September 2012 to October 2014, 1924 cattle, Sistani breed (n= 1235) and Brahman breed (n=689) of all sex and age groups collected from Sistan and Baluchestan Province were examined using visual observation of the eyes by flushing the conjunctival sac and lachrymal duct with sterile saline solution.
The overall prevalence for thelaziosis was 50 of 1924 cows (2. 6%; 95% CI: 1. 9-3. 3%), with significant higher prevalence of infection in Sistani breed than in Brahman breed (3. 15% vs 1. 59%). Sixty adult worms (84. 5% of females and 15. 5% of males) were collected from the conjunctiva of the infected cattle: (50/60, 83. 3%) was the most represented species followed by (10/60, 16. 7%). The number of worms collected per cow ranged from one to seven (average ± standard deviation: 2. 08 ± 1. 49). Worms were gathered from cows throughout all months of the year. The difference in the seasonal variations of prevalence and the intensity of infection were significant, however, no significant correlation between prevalence, sex and age of cattle was noted.
Bovine thelaziosis needs special attention by veterinarians in the differential diagnosis of ocular manifestations and considering its impact on cattle production.
本研究旨在调查伊朗东南部（伊朗锡斯坦牛的地方病流行区）牛眼吸吮线虫病的患病率及危险因素。
2012年9月至2014年10月期间，从锡斯坦-俾路支斯坦省收集了1924头不同性别和年龄组的牛，包括锡斯坦品种（n = 1235）和婆罗门品种（n = 689），通过用无菌盐溶液冲洗结膜囊和泪管，对其眼睛进行目视检查。
1924头牛中，眼吸吮线虫病的总体患病率为50头（2.6%；95%置信区间：1.9 - 3.3%），锡斯坦品种的感染患病率显著高于婆罗门品种（3.15%对1.59%）。从感染牛的结膜中收集到60条成虫（84.5%为雌性，15.5%为雄性）：（50/60，83.3%）是最主要的种类，其次是（10/60，16.7%）。每头牛收集到的虫数从1条到7条不等（平均±标准差：2.08±1.49）。全年各月均从牛身上采集到虫体。患病率和感染强度的季节性变化存在显著差异，然而，未发现患病率与牛的性别和年龄之间存在显著相关性。
兽医在眼部表现的鉴别诊断中需要特别关注牛眼吸吮线虫病，并考虑其对养牛生产的影响。
