How repeatable is a faecal egg count reduction test

摘要: Abstract AIM: To gather information on the repeatability of a faecal nematode egg count (FEC) reduction (FECR) test (FECRT), evaluating both different methods calculating efficacy and variations within method, in order to supply veterinarians other advisors with sufficient apply some level confidence around diagnosis anthelmintic resistance based FECRT results. METHODS: Two commercial sheep farms were selected basis having previously recorded FECR <95% after treatment ivermectin (Farm 1) or albendazole 2). On each farm at least 250 lambs, managed as single mob, individually ear-tagged sampled for FEC. The resulting counts used, 3—4 days later, sort lambs into 24 groups 10. First, animals split three 80, high, medium low Second, these 80 further divided four replicate mobs 20 (each same mean count). Third, replicates w...