T. W. Murphy1*, W. C. Stewart2, and J. B. Taylor3

Impact statement

Clinical mastitis contributes to increased culling rates and lost revenue in Western sheep production, but the importance of subclinical mastitis is less clear. Results from this work suggest that subclinical mastitis is prevalent and has large economic consequences in the form of reduced lamb weaning weight. Strategic trace mineral supplementation and other management practices to reduce its prevalence warrants further investigation.

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