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Theriogenology Question of the Month

Julie M. Harbo DVM1, Roy D. Mausling DVM2, Donald H. Schlafer DVM, PhD, DACT, DACVM, DACVP3, and Dirk K. Vanderwall DVM, PhD, DACT4
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  • 1 River Ridge Veterinary Hospital, 10300 S Miller Rd, Litchfield Park, AZ 85340
  • | 2 River Ridge Veterinary Hospital, 10300 S Miller Rd, Litchfield Park, AZ 85340
  • | 3 Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853
  • | 4 Northwest Equine Reproduction Laboratory, Department of Animal and Veterinary Science and Center for Reproductive Biology, College of Agricultural and Life Sciences, University of Idaho, Moscow, ID 83844
History

A 6-year-old Arabian mare was bred by a stallion 2 times with an interval of 2 days between breedings. Transrectal ultrasonography performed 21 days after the second breeding revealed a single embryonic vesicle (30 mm in diameter) at the base of the left uterine horn. The mare subsequently gave birth to a healthy male foal 351 days after the second breeding.

Fetal membranes were expelled approximately 1 hour after parturition. The fetal membranes were examined the following day to ensure they were complete (ie, all membranes had been expelled) and for evidence of abnormalities. During evaluation of the fetal

History

A 6-year-old Arabian mare was bred by a stallion 2 times with an interval of 2 days between breedings. Transrectal ultrasonography performed 21 days after the second breeding revealed a single embryonic vesicle (30 mm in diameter) at the base of the left uterine horn. The mare subsequently gave birth to a healthy male foal 351 days after the second breeding.

Fetal membranes were expelled approximately 1 hour after parturition. The fetal membranes were examined the following day to ensure they were complete (ie, all membranes had been expelled) and for evidence of abnormalities. During evaluation of the fetal

Contributor Notes

Address correspondence to Dr. Vanderwall.