Summary
This study examines the genetic determinants of resistance to gastrointestinal nematodes in Central Anatolian Merino lambs managed under pasture-based conditions in Turkey, a region where parasite burden represents a significant constraint on small ruminant productivity. By characterising genetic or genomic markers associated with host resistance, the research contributes to the evidence base for marker-assisted or genomic selection programmes aimed at reducing reliance on anthelmintic treatment. The work is situated within a broader international effort to develop sustainable parasite management strategies in sheep production through selective breeding.
UK applicability
While conducted in a Turkish pastoral context with a Central Anatolian Merino breed, the findings have moderate transferability to UK sheep systems, where gastrointestinal nematodes — particularly Haemonchus contortus and Teladorsagia circumcincta — pose comparable challenges; UK breeding programmes such as Signet's Estimated Breeding Values for FEC could benefit from comparative genomic insights, though breed-specific genetic architecture may limit direct application.
Key measures
Likely: faecal egg count (FEC); packed cell volume (PCV) or FAMACHA score; SNP associations or heritability estimates; possibly body weight and fleece traits as covariates
Outcomes reported
The study likely investigated genomic or quantitative trait loci (QTL) associations with resistance to gastrointestinal nematode infection in Central Anatolian Merino lambs raised on pasture, using indicators such as faecal egg count (FEC) and haematological or immunological markers. It probably aimed to identify genetic variants or estimated breeding values relevant to selective breeding for parasite resistance.
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