Contagious Agalactia is a highly contagious disease that affects dairy sheep and goats. Mainly caused by the Mycoplasma agalactiae bacteria in sheep and goats, this disease has also been linked to M capricolum capricolum, M mycoides LC, and M putrefaciens in goats. Contagious Agalactia is transmitted through ingestion of food, milk, water, colostrum or other body fluids contaminated with M. agalactiae. Contagious Agalactia has been known for the past 200 years and can cause severe economic loss from mastitis and decreased milk production.
Endemic Areas
Southern Europe, the Middle East, Africa, South America, the United States, and India.
Clinical Signs
- Fever
- Lethargy
- Decreased appetite
- Decreased milk production
- Yellow milk that may become lumpy and can obstruct the teat
- Lameness
- Swollen joints
- Arthritis
- Inability to stand/walk
- Keratoconjunctivitis (pinkeye)
- Pneumonia especially in young animals
- Abortion
Treatment
Contagious Agalactia may be treated with antibiotics such as penicillin and most animals will recover. Any animal suspected of having Contagious Agalactia should be reported to the State Veterinarians or USDA Area Veterinarian in Charge immediately.
Prevention
Vaccinations are available for Contagious Agalactia. Introduction and spread of the disease may be prevented by developing a vaccination protocol and sound biosecurity practices.
Public Health
Contagious Agalactia is not a public health threat.
Links
- Contagious Agalactia Iowa State University
