Caring for the Pregnant Mare

Mar 15 • 1 minute read

Pregnancy in horses typically lasts 11 months, and during this time, the mare requires proper care to ensure the health and safety of the developing foal. It is essential to ensure that the mare receives adequate nutrition, exercise, and veterinary care throughout her pregnancy. Poor care and management during pregnancy can lead to a range of issues, including complications during foaling and the birth of weak or unhealthy foals.

Vaccinating the Pregnant Mare

Vaccinating the pregnant mare is an essential aspect of mare care during pregnancy. Vaccines can help protect the mare and the developing foal from a range of infectious diseases. Vaccines work by stimulating the mare's immune system to produce antibodies that can protect against specific diseases.

Vaccines are typically administered at 5, 7, and 9 months of pregnancy. These vaccines are designed to protect against diseases that can be transmitted to the foal in utero or through the mare's milk after foaling. The vaccines typically administered include:

  • Rhinopneumonitis Vaccine (EHV-1 and EHV-4)

Rhinopneumonitis is a respiratory disease caused by the equine herpes virus (EHV). This virus can cause respiratory disease, abortion, and neurological disease. The rhinopneumonitis vaccine is designed to protect against both EHV-1 and EHV-4.

  • Influenza Vaccine

The equine influenza virus can cause respiratory disease in horses, leading to coughing, nasal discharge, and fever. Vaccination against influenza can help reduce the severity of disease in horses.

  • West Nile Virus Vaccine

The West Nile virus is a mosquito-borne virus that can cause neurological disease in horses. Vaccination against West Nile virus is recommended for horses in areas where the virus is prevalent.

  • Tetanus Vaccine

Tetanus is a bacterial infection that can be fatal in horses. The tetanus vaccine is typically given annually but is recommended during pregnancy to protect against this potentially deadly disease.


Caring for a pregnant mare requires attention to detail, good nutrition, and veterinary care. Vaccinating the mare at 5, 7, and 9 months of pregnancy is an essential aspect of mare care during pregnancy. Vaccination can help protect the mare and the developing foal from a range of infectious diseases. Consult with your veterinarian to develop a vaccination schedule that is appropriate for your mare and her specific needs. With proper care and management, you can help ensure a healthy and safe pregnancy for your mare and the development of a strong and healthy foal.

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