Anaplasmosis in Cattle: Tick-Borne Disease Welfare
Anaplasmosis caused by Anaplasma marginale destroys red blood cells in cattle, causing acute welfare emergencies from severe hemolytic anemia particularly in adult animals.
Key Facts
- Transmitted by ticks and blood-sucking insects, and by contaminated equipment
- Destroys red blood cells causing progressive anemia, icterus, and systemic illness
- Adult cattle over 3 years are most severely affected with high mortality in acute cases
- Treatment with oxytetracycline is effective when initiated early
- Prevention focuses on tick control, blood-sucking insect management, and sterile equipment use
Welfare Considerations
Anaplasmosis welfare impact is severe in acute adult cases where rapid red blood cell destruction leads to profound anemia, weakness, and systemic collapse. Affected cattle show rapid deterioration with pallor, icterus, elevated respiratory rate, and inability to stand without intervention. Early treatment with long-acting oxytetracycline dramatically improves welfare outcomes if initiated before severe anemia develops. Calves develop a milder clinical disease and recover more readily. In endemic areas, carrier animals maintain infection that can be transmitted to susceptible adults, creating ongoing welfare risk requiring management.
What You Can Do
- Implement effective tick and blood-sucking insect control in endemic areas
- Use sterile needles and equipment for all blood-contact procedures
- Monitor adult cattle closely during high-risk periods for signs of anemia
- Act immediately when anaplasmosis is suspected — early treatment saves lives
- Work with your vet on prevention strategies appropriate for your endemic status