Health

Build a Broodmare Vaccination Program

Vaccinating your broodmare properly is a crucial item on your horse-breeding to-do list.

From AQHA Corporate Partner Zoetis

Vaccinating your broodmares is important to their overall health. Journal photo.

You selected the best possible stallion match for your mare. You’ve worked hard to ensure that your mare was cycling and bred for a timely delivery. However, is your mare’s vaccination program up to the task?

Vaccines are a crucial part of horse health and are increasingly important for the health of your pregnant mare and her unborn foal. The American Association of Equine Practitioners, the leading association of equine veterinarians, recommends that core and risk-based vaccines be given to broodmares early in their pregnancy.1 Additionally, a booster should be given at least one month prior to foaling to increase antibody levels in the mare’s colostrum.1

In the fifth, seventh and ninth months of gestation — generally fall and winter, depending on when you’ve bred — mares need a vaccine labeled to help protect against abortion caused by equine herpesvirus type-1 (EHV-1). In fact, pregnant mares have a more than four times greater risk of abortion due to EHV-1 when not vaccinated.2-5

PNEUMABORT-K® + 1b from Zoetis is the only equine vaccine labeled for use in pregnant mares to aid in the prevention of abortion due to EHV-1 infections. PNEUMABORT-K + 1b also helps prevent respiratory infections caused by equine herpesvirus (EHV)-1p and EHV-1b.

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Vaccinating your mare against leptospirosis may help prevent abortion, as well. Leptospires, the bacteria that cause leptospirosis, can lead to late-term abortion in mares. Aborting mares have been reported to shed leptospires in their urine for periods up to three months and can transmit Leptospira to exposed animals.6Additionally, an aborted fetus is a source of exposure to other horses on the property.

LEPTO EQ INNOVATOR® from Zoetis is the first and only equine vaccine to help prevent leptospiremia caused by Leptospira interrogans serovar Pomona (L. pomona) which could, but has not been demonstrated to, help reduce the potential risk of equine recurrent uveitis infections, abortions or acute renal failure caused by L. pomona.* Field safety studies, which examined LEPTO EQ INNOVATOR® when used in the first, second and third trimesters of pregnancy, showed no systemic or local reactions related to vaccine administration.7,8Previously unvaccinated healthy mares should receive two doses of LEPTO EQ INNOVATOR® approximately three to four weeks apart. Annual revaccination with a single dose is then recommended. 

Be sure to talk with your veterinarian about additional vaccinations to help minimize the threat of other equine diseases for your broodmare, such as strangles and rotavirus. Your veterinarian can advise which vaccinations are likely to be beneficial in your situation and when to administer them.

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Track your mare’s and foal’s vaccinations and health care with the EQStable™ app from Zoetis. The free app allows you to easily manage your horses’ health care, exercise and more from the palm of your hand.

AAEP BROODMARE VACCINATION RECOMMENDATIONS9

Core Broodmare Vaccinations

Disease

Previously Vaccinated

Unvaccinated or Unknown History

Zoetis Vaccine Solutions

Tetanus

Annual revaccination,

4-6 weeks prepartum

2 doses – 2nd dose 4-6 weeks after 1st dose

TETANUS TOXOID

FLUVAC INNOVATOR® 4, 5 or 6

WEST NILE-INNOVATOR® + EWT

WEST NILE-INNOVATOR® + VEWT

Eastern equine encephalomyelitis

and

Western equine

Encephalomyelitis

Annual revaccination,

4-6 weeks prepartum

2 doses – 2nd dose 4-6 weeks after 1st dose

FLUVAC INNOVATOR® 4, 5 or 6

WEST NILE-INNOVATOR® + EWT

West Nile

Annual revaccination,

4-6 weeks prepartum

2 doses – 2nd dose 4-6 weeks after 1st dose. It is preferable to vaccinate naïve mares when open.

WEST NILE-INNOVATOR® + EW

WEST NILE-INNOVATOR® + EWT

WEST NILE-INNOVATOR® + VEWT

Rabies

Annual revaccination,

4-6 weeks prepartum or prior to breeding

Single dose

 

Risk-based Broodmare Vaccinations

Disease

Previously Vaccinated

Unvaccinated or Unknown History

Zoetis Vaccine Solutions

Leptospirosis

Annual revaccination

2 doses – 2nd dose 3-4 weeks after 1st dose

LEPTO EQ INNOVATOR®

Equine Viral Arteritis

Annual revaccination,

after foaling

Discuss your mare’s risk with your veterinarian prior to vaccinating.

ARVAC®

Equine Influenza

Annual or semiannual revaccination,

4-6 weeks prepartum

3-dose series – 2nd dose 4-6 weeks after 1st dose, 3rd dose 3-6 months after 2nd dose

FLUVAC INNOVATOR®

FLUVAC INNOVATOR® EHV-4/1

FLUVAC INNOVATOR® 4, 5 or 6

Equine Herpesvirus — respiratory

Annual revaccination,

4-6 weeks prepartum

3-dose series – 2nd dose 4-6 weeks after 1st dose, 3rd dose 4-6 weeks after 2nd dose

FLUVAC INNOVATOR® EHV-4/1

FLUVAC INNOVATOR® 5 or 6

Equine Herpesvirus — abortion

3-dose series with product labeled for protection against EHV abortion – give at

5th, 7th and 9th month of pregnancy

PNEUMABORT-K® + 1b

1 American Association of Equine Practitioners. Expectant Mare: Assuring Health and Well-being of the Pregnant Mare. http://www.aaep.org/info/horse-health?publication=900. Accessed Sept. 29, 2016.

2 Bryans JT, Allen GP. Application of a chemically inactivated, adjuvanted vaccine to control abortigenic infection of mares by equine Herpesvirus 1. Dev Biol Stand. 1982;52:493-498.

3 Tengelsen LA, Yamini B, Mullaney TP, et al. A 12-year retrospective study of equine abortion in Michigan. J Vet Diagn Invest. 1997;9:303-306.

4 Giles RC, Donahue JM, Hong CB, et al. Causes of abortion, stillbirth, and perinatal death in horses: 3,527 cases. 1986-1991. J Am Vet Med Assoc. 1993;203(8):1170-1175.

5 Hong CB, Donahue JM, Giles RC, et al. Equine abortion and stillbirth in central Kentucky during 1988 and 1989 foaling seasons. J Vet Diagn Invest. 1993;5(4):560-566.

6 Divers TJ, Chang Y-F. Leptospirosis. In: Robinson NE, Sprayberry KA, eds. Current Therapy in Equine Medicine. Vol 6. 6th ed. St. Louis, MO: Saunders Elsevier, 2009:145-147.

7Data on file, Study Report No. B951R-US-15-092, Zoetis LLC.

8 Data on file, Study Report No. B951R-US-13-046, Zoetis LLC.

9 American Association of Equine Practitioners. Vaccination Guidelines. http://www.aaep.org/info/vaccination-guidelines. Accessed Sept. 29, 2016.

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