Hernández-Hernández J C, González-Garduño R, Ortiz-Pérez D O, Villa-Mancera A, Arias-Vázquez M S, Paz-Silva A
Unidad Regional Universitaria Sursureste, Universidad Autónoma Chapingo, km 7.5 Carr. Teapa-Vicente Guerrero, Teapa, Tabasco, México.
Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Chiapas, Campus Pichucalco, México.
Helminthologia. 2023 Sep 22;60(2):141-151. doi: 10.2478/helm-2023-0017. eCollection 2023 Jun.
The objective of this study was to determine the risk factors and prevalence of trematodes in south-eastern Mexico. The prevalence of trematodes was determined in 1010 bovines. The study was carried out from October 2018 (n=291) to December 2019 (n=719). Only in 2019 rumen and liver fluke eggs were differentiated. Faecal samples (n=311) were obtained from farms in southeast Mexico located in Tabasco, Chiapas and Campeche. In addition, the presence of flukes in liver and rumen from slaughtered cattle in abattoirs was recorded with a total of 408 samples. A logistic procedure was used to obtain the prevalence and the effect of main risk factors such as land physiography (flooded areas and hills), year, sex, animals' age and type of sample obtained (eggs in faeces and flukes). The general prevalence of flukes in cattle was 32.3 % in 2018 and 41.7 % in 2019. Prevalence of (liver fluke) was 18.6 % (134/719) and that of paramphistomids (rumen fluke) was 33.4 % (240/719). The infected cattle from the slaughterhouse indicated a lower prevalence of (1 %) and rumen fluke (26.7 %) than in farms detected by egg in faeces (41.8 % and 42.1 %, respectively). The physiographic zone was decisive in the presence of and rumen fluke, while sex did not represent a risk factor (P > 0.05). The environmental conditions of the Mexican southeast favour the presence of both liver and rumen fluke.
本研究的目的是确定墨西哥东南部吸虫的风险因素和流行情况。在1010头牛中测定了吸虫的流行情况。该研究于2018年10月（n = 291）至2019年12月（n = 719）进行。仅在2019年对瘤胃吸虫和肝吸虫卵进行了区分。从位于塔巴斯科州、恰帕斯州和坎佩切州的墨西哥东南部农场采集了粪便样本（n = 311）。此外，记录了屠宰场宰杀牛的肝脏和瘤胃中吸虫的存在情况，共408份样本。采用逻辑程序来获取流行率以及主要风险因素的影响，如土地地貌（洪泛区和丘陵）、年份、性别、动物年龄和所采集样本的类型（粪便中的虫卵和吸虫）。2018年牛群中吸虫的总体流行率为32.3%，2019年为41.7%。肝吸虫的流行率为18.6%（134/719），双口吸虫（瘤胃吸虫）的流行率为33.4%（240/719）。来自屠宰场的感染牛显示肝吸虫（1%）和瘤胃吸虫（26.7%）的流行率低于粪便中虫卵检测出的农场（分别为41.8%和42.1%）。地貌区域对肝吸虫和瘤胃吸虫的存在起决定性作用，而性别并非风险因素（P>0.05）。墨西哥东南部的环境条件有利于肝吸虫和瘤胃吸虫的存在。
