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Conference Agenda

Overview and details of the sessions of this conference. Please select a date or location to show only sessions at that day or location. Please select a single session for detailed view (with abstracts and downloads if available).

Daily Overview

Session

CP15.1: Drugs & Drug Resistance 2 - 5 min talks sponsored by Institute for Biomedicine and Glycomics, Griffith University
Location: Lecture Theatre 1
Session Chair: Jacinta Macdonald, Griffith University
Session Chair: Rohith Kutty, Griffith University

Presentation 5

A systematic review of epidemiology, anthelmintic resistance and economic impact of gastrointestinal parasites in Sri Lankan small ruminants

Suraj Walimunige¹, Dulari Thilakarathne², Abdul Ghafar¹, Ghazanfar Abbas¹, Endris Ali¹, Anil Kalupahana², Jayanthe Rajapakshe², Robin Gasser¹, Abdul Jabbar¹

1: University of Melbourne, Australia; 2: University of Peradeniya, Sri Lanka

Gastrointestinal parasitic infections (GIP) are a major constraint to small ruminant production in Sri Lanka, yet a comprehensive synthesis of their epidemiology and anthelmintic resistance (AR) is lacking. This systematic review synthesised evidence on GIP, AR, and key knowledge gaps. A search of Web of Science, PubMed, Scopus, and CAB Abstracts (1971–January 2025), cross-checked with Google Scholar, identified 34 studies. Study quality was assessed using the Joanna Briggs Institute (JBI) prevalence checklist, and apparent prevalence was adjusted to true prevalence using the Rogan–Gladen estimator. In goats, prevalence ranged from 74–78%, while sheep showed seasonal prevalence of 84% (dry) and 92% (wet), with higher true prevalence after diagnostic adjustment. Predominant nematodes in goats were Haemonchus contortus (90%), Oesophagostomum columbianum (88%), Trichostrongylus colubriformis (76%), and Strongyloides spp. (72.5%). In sheep, Haemonchus contortus, Toxocara spp., and Trichuris spp. were common. AR was documented against benzimidazoles and levamisole, with Haemonchus spp. consistently implicated. Estimated economic losses in goats were LKR 230 million, based on limited data. Studies were heterogeneous in diagnostics, limiting comparability. These findings highlight critical gaps in parasite prevalence, species distribution, and AR, and underscore the need for coordinated, standardised national surveillance for sustainable parasite control in Sri Lanka.