Chougar Linda, Harhoura Kh, Aissi M
Animal Health and Productions Laboratory, High National Veterinary School, B.P.228, Oued Samar, Algiers, Algeria.
Vet World. 2019 Jul;12(7):1039-1045. doi: 10.14202/vetworld.2019.1039-1045. Epub 2019 Jul 16.
or small liver fluke often causes unnoticed clinical manifestations in cattle. For a live animal, its diagnosis is mainly based on the detection of eggs by coproscopic examination. The objective of this study was to determine the presence or absence of spp. never previously reported in the study area but also to establish its prevalence, as well as an association between dicrocoeliasis and sex, age and season of the year, and histological characteristics.
The study was carried out in slaughterhouses of three districts (Bouira, Tizi-Ouzou, and Bejaia) from January 2017 to December 2017. To this end, of 4053 cattle, representing more than 10% of the total number of animals slaughtered, stool and bile samples were collected and a liver inspection was carried out to investigate lesions of distomial cholangitis. They were processed for histological analysis. The specimens were morphologically identified according to the orientation of the testicles, the length and width of the body, and the level of the maximum width of the body.
The total prevalence of dicrocoeliasis obtained of the 4053 cattle inspected is 0.52% with a prevalence of 0.66% in Tizi-Ouzou, 0.54% in Bouira, and 0.27% in Bejaia. About 0.52% of livers had distomial cholangitis (21 of the 4053 livers examined had adult and 15% had non-distomial cholangitis. About 0.25% of cattle had eggs in the stool versus 0.52% of cattle had parasite eggs in the bile. Statistical analysis revealed no significant association between dicrocoeliasis infection and the season of the year (p>0.05). However, a significant association was found between dicrocoeliasis infection and sex and age of the animal (p<0.05); females and older animals are more likely to have dicrocoeliasis. Histological analysis of the fluke revealed an anterior positioning of the testicles with a slightly oblique tandem orientation, an average body length of 3.69 mm and an average body width of 1 mm. The maximum body width level is either in the middle of the fluke body or in the rear position.
The histological study confirms that the collected fluke is . Thus, this work reveals for the 1 time in Algeria the presence of in three districts (Bouira, Tizi-Ouzou, and Bejaia). The results indicate that many cattle farms in the North Central Province of Algeria are infested with .
小型肝吸虫常导致牛出现不易察觉的临床表现。对于活体动物，其诊断主要基于粪便检查中虫卵的检测。本研究的目的是确定研究区域中此前从未报道过的某种肝片吸虫的存在与否，同时确定其流行率，以及双腔吸虫病与性别、年龄、季节和组织学特征之间的关联。
本研究于2017年1月至2017年12月在三个地区（布伊拉、提济乌祖和贝贾亚）的屠宰场进行。为此，从4053头牛中，即占屠宰动物总数10%以上的牛中，采集粪便和胆汁样本，并对肝脏进行检查以调查双腔胆管炎的病变。对样本进行组织学分析。根据睾丸的方位、虫体的长度和宽度以及虫体最大宽度的位置对标本进行形态学鉴定。
在检查的4053头牛中，双腔吸虫病的总流行率为0.52%，其中提济乌祖的流行率为0.66%，布伊拉为0.54%，贝贾亚为0.27%。约0.52%的肝脏患有双腔胆管炎（在检查的4053个肝脏中，有21个有成年肝片吸虫，15%患有非双腔胆管炎。约0.25%的牛粪便中有肝片吸虫卵，而0.52%的牛胆汁中有寄生虫卵。统计分析显示双腔吸虫病感染与一年中的季节之间无显著关联（p>0.05）。然而，发现双腔吸虫病感染与动物的性别和年龄之间存在显著关联（p<0.05）；雌性和年龄较大的动物更易感染双腔吸虫病。对吸虫的组织学分析显示睾丸位于前方，呈稍倾斜的串联排列，虫体平均长度为3.69毫米，平均宽度为1毫米。虫体最大宽度位置要么在虫体中部，要么在后部。
组织学研究证实所采集的吸虫为肝片吸虫。因此，本研究首次揭示了在阿尔及利亚的三个地区（布伊拉、提济乌祖和贝贾亚）存在肝片吸虫。结果表明，阿尔及利亚中北部省份的许多养牛场都感染了肝片吸虫。
