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My mare miscarried. Is lethargy and discharge normal or infection?

Updated On September 23rd, 2025

Pet's info: Farm Animal | Horse | Female | unspayed | 3 years and 10 months old | 700 lbs

My 4 year old mare miscarried her foal at 5 months along. We didn't see it happen but hours later the sac was still hanging out of the mare. The next day the sac was not visible but the horse was lethargic and what looked like puss was coming out. Same condition 2 days later. The horse is eating and drinking fine just seems less energetic. I'm wondering if these symptoms are normal when a horse miscarries or if she is experiencing an infection because not everything came out? Thank you so much!!

1 Answer

Most Helpful Answer

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Answered By Dr. Paula Simons

Veterinarian

Published on May 12th, 2017

Horses need to pass the afterbirth within 1 hour or the placenta is considered retained. This can lead to serious infections of the uterus or reproductive tissues. Please call your vet right away because it is important that she have an examination. They can be sure that she passed the complete placenta or they will flush her out and administer antibiotics.

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