Habte Amarech, Ibrahim Nuraddis
School of Veterinary Medicine, Jimma University, 307, Jimma, Ethiopia.
Trop Anim Health Prod. 2018 Dec;50(8):1865-1870. doi: 10.1007/s11250-018-1637-0. Epub 2018 Jul 8.
Haemonchus contortus is a parasite of major economic importance of most sheep-rearing areas of the world. A cross-sectional study was conducted from November 2015 to March 2016 with objectives of determining the prevalence and associated risk factors of Haemonchus contortus infection in sheep slaughtered at Jimma town municipal abattoir, Ethiopia. Of the total 7000 sheep slaughtered during the study time period, 384 sheep were randomly selected and examined for parasites. The overall prevalence of Haemonchus contortus infection was 264 (68.75%). Infection rate of poor body condition animals was significantly (P = 0.000) higher than good body conditioned animals. The mean packed cell volume (PCV) values (%) of parasitemic and aparasitemic sheep were 23.73 ± 3.7 SD and 37.66 ± 4.736 SD, respectively. The prevalence in adult sheep (> 1 year) was insignificantly (P = 0.653) higher than that of young sheep (≤ 1 year). The highest prevalence was recorded in sheep that originated from Seka district (73.3%) and the lowest in Kersa district (63.4%) with non-significant variation (P = 0.691). The highest monthly mean worm burdens and prevalence of Haemonchus contortus infection were recorded in November and lowest in March. The current study revealed that Haemonchus contortus infection is an important and common parasitic disease and requires special attention to its control.
捻转血矛线虫是世界上大多数养羊地区具有重要经济意义的一种寄生虫。2015年11月至2016年3月进行了一项横断面研究，目的是确定在埃塞俄比亚吉姆马镇市立屠宰场宰杀的绵羊中捻转血矛线虫感染的患病率及相关风险因素。在研究期间宰杀的7000只绵羊中，随机挑选了384只绵羊进行寄生虫检查。捻转血矛线虫感染的总体患病率为264只（68.75%）。身体状况差的动物的感染率显著高于（P = 0.000）身体状况良好的动物。感染寄生虫和未感染寄生虫的绵羊的平均红细胞压积（PCV）值（%）分别为23.73±3.7标准差和37.66±4.736标准差。成年绵羊（>1岁）的患病率略高于（P = 0.653）幼羊（≤1岁）。来自塞卡区的绵羊患病率最高（73.3%），克尔萨区最低（63.4%），差异不显著（P = 0.691）。捻转血矛线虫感染的最高月平均虫负荷和患病率出现在11月，3月最低。当前研究表明，捻转血矛线虫感染是一种重要且常见的寄生虫病，需要对其控制给予特别关注。
