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A warming climate has implications for livestock production systems including wool and sheep meat enterprises. Databases which collate information from sheep pregnancy scanning contractors offer an opportunity to investigate variation in reproductive efficiency over time and make links to climatic conditions. This project will utilise large volumes of historic data obtained from industry collaborators to investigate the fertility of ewes by region, season and year. Information will inform our understanding of average rates of reproductive efficiency in the sheep industry, facilitate grower benchmarking and identify areas for future research.