RECOVERY AND EVALUATION OF EMBRYOS FROM NORMAL AND INFERTILE MARES

  • 1 October 1986
    • journal article
    • research article
    • Vol. 76  (4) , 386-394
Abstract
To evaluate embryo transfer as a possible method to circumvent infertility in mares, embryos from 14 normal and 14 infertile mares were collected three times and examined. Fewer flushes (p < 0.05) from normal than infertile mares (1/42 vs 9/42) contained only abnormal embryos whereas more flushes (p < 0.05) from normal than infertile mares contained one or more normal embryos (28/42 vs 8/42). More flushes (p < 0.05) from normal than infertile mares contained embryos (29/42 vs 17/42). The embryo diameters (mm) at either day-7 or day-8 post ovulation were greater (p < 0.01) for normal than infertile mares (day 7:0.7 .+-. 0.08 vs 0.3 .+-. 0.07; day 8:1.1 .+-. 0.18 vs 0.7 .+-. 0.23). Six of the 10 (60%) flushes that contained only abnormal embryos were recovered from mares with positive uterine cultures or moderate to severe endometritis. The embryos recovered from normal mares were greater in quantity and better in quality.

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