The effect of postpartum uterine lavage on foal heat pregnancy rate

P M McCue, J P Hughes


Mares (n = 37) were treated on Days 2 and 4 post partum with a uterine lavage of 10 l of warm, sterile NaCl (0.9%) solution. Endometrial cytology and culture were performed on Day 7. Mares were bred on the first postpartum estrus by artificial insemination. Pregnancy rates were determined by ultrasound examination at Day 16 post ovulation. No differences were noted in degree of uterine inflammation or presence of uterine bacteria at Day 7 post partum between treated (n = 18) and control (n = 19) mares. Pregnancy rates at the first postpartum estrus for treated mares (55.5%) was not statistically different from that of control mares (68.4%). No advantage was noted in the use of intrauterine lavage with 10 l of warm sterile NaCl (0.9%) at Days 2 and 4 post partum as a means of improving foal heat pregnancy rate.


May 1, 1987·Equine Veterinary Journal·E D Watson
Dec 1, 1967·Australian Veterinary Journal·R G MatthewsR M Butterfield

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