Farm Animals

Cattle Summer Mastitis Prevention

Summer mastitis affects dry cows and heifers in the UK during fly season, causing severe welfare impacts and sometimes death if untreated.

Key Facts

Summer mastitis is caused by bacterial infection often spread by flies
Affected quarters become swollen, hot, and painful with fetid discharge
The condition frequently results in permanent quarter loss or death
Cattle in shaded areas with fly control have significantly lower rates
Teat sealants and fly pour-ons are effective preventive measures

Welfare Considerations

Summer mastitis causes acute, severe pain and systemic illness. Without prompt treatment, affected animals deteriorate rapidly and may die. The condition is entirely preventable with appropriate fly control and teat protection during the dry period. Prevention is far more welfare-positive than treating established infection.

What You Can Do

Use teat sealants and fly control for dry cows and heifers during fly season
Provide adequate shade and shelter for cattle during summer months
Monitor dry cows and heifers closely during the summer fly season