Article Text

Farm animal practice
Differential diagnosis of scrotal enlargement in bulls
  1. Jonathan Statham

    Jonathan Statham graduated from Cambridge in 1996. He is a partner in Bishopton Veterinary Group, an 18-vet practice in Yorkshire and a member of XLVets, and runs the practice's cattle breeding service. He joined the council of the British Cattle Veterinary Association (BCVA) in 2005, becoming chair of the BCVA's Health Planning and Endemic Disease Group in 2006. He is also a member of the Cattle Health and Welfare Group and the Nottingham Dairy Herd Health Group. He holds a DEFRA licence as supervising veterinary surgeon for artificial insemination training and is a member of the International Embryo Transfer Society. He holds the RCVS certificate in cattle health and production.


Fertility performance remains central to profitable beef and dairy production. Delayed calving to conception intervals translate to lost income. Hence, the bull represents a significant investment in both beef and dairy systems, and subfertility in these animals is a serious issue. Around two-thirds of subfertile bulls may be detected by physical examination alone, with one of the clinical signs being scrotal enlargement. This article describes a systematic diagnostic approach to scrotal enlargement in bulls and discusses the common differential diagnoses for this presentation.

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