Evaluation of Fasciola hepaticaInfections in Cattle in Northeastern Algeria and the Effects on Both Enzyme and Hepatic Damage, Confirmed by Scanning Electron Microscopy

Abstract

Our study indicates a heterogeneous level of the anti-f2 antibodies to Fasciola hepatica in response to the infection. The overall seroprevalence was about 22.37%, and 9 out of 13 investigated farms were infected, with rates varying from 5.88% to 70%. To explain the intrinsic variability of the infection, we identifed age, sex and breed as potential risk factors. Based on this, we collected information about their relevance. There was a signifcant diference for age (p = 0.018) and coprology (p < 0.0001). Independently, sex and breed had no impact on the infection, although males were more infected (27%) than females (22%). Of the fve investigated breeds, Holstein cattle (31.11%) were most afected, followed by Montbeliard (20.27%) and crossed breed (13.64%). Multivariate comparisons showed that the presence of faecal eggs refects the active infectious status of cattle (p < 0.0001), while age (p = 0.011) and sex (p = 0.040) signifcantly impact the chance of acquiring the infection. To evaluate liver parenchyma integrity and its functionality, hepatic enzymes were examined and showed relatively low levels of aminotransferases, excluding cytolisis. Although sensitive to distomatosis, γGT and PAL values were inconsistent with the infection rate. The relatively high levels of proteins and albumin eliminate hepatic insufciency.Conclusion Our results suggest a chronic fasciolosis, confrmed by histology and SEM.