Gastrointestinal Parasites of Nigerian Dwarf Goats in Smallholder Farms in Ogun State, South West Nigeria

Gastrointestinal parasitic infections are a primary constraint to small ruminant productivity in smallholder farming systems across Nigeria, causing production losses estimated at billions of naira annually through reduced weight gain, reproductive failure, and mortality. This study investigates the prevalence and species diversity of gastrointestinal parasites in Nigerian dwarf goats maintained in smallholder farms in Ogun State, South West Nigeria. A cross-sectional survey was conducted across three local government areas including Ijebu Ode, Sagamu, and Ikenne. Fresh faecal samples from 300 goats were collected directly from the rectum and processed using the modified McMaster technique for egg count quantification and larval culture for third-stage larval identification. Physical examination assessed body condition score, conjunctival mucous membrane colour using the FAMACHA system, and coat condition. Farmer questionnaires captured anthelmintic treatment history, grazing management, and feeding practices. Evidence from 2020 to 2024 identifies Haemonchus contortus as the most pathogenic gastrointestinal nematode in Nigerian small ruminants, with anthelmintic resistance increasingly reported in southwestern states. This study generates baseline prevalence data to support sustainable worm control programmes for Ogun State goat farmers. Findings will be shared with the Ogun State Ministry of Agriculture and the Animal Science departments of state universities. Keywords: gastrointestinal parasites, dwarf goats, smallholder farms, Ogun State, FAMACHA.