Equine theriogenology and genetics continue to advance breeding efficiency, foal health, and performance outcomes. This hub covers the latest developments in reproductive physiology, assisted reproduction, and genetic selection. Explore topics such as embryo transfer, ICSI, vitrification, and the management of fertility challenges including uterine torsion and early pregnancy loss. Articles also examine stallion genetics, heritability factors, and the identification of performance-linked biomarkers such as those for myopathy and developmental traits. You’ll find discussions of gene doping concerns, reproductive immunology, and the use of genomic data to improve breeding decisions. This section serves as a central resource for veterinarians, breeders, and researchers dedicated to responsible genetic stewardship and the advancement of equine reproduction. A simple preliminary 8-point assessment can accurately identify mares in pain in the days after foaling, potentially improving post-partum care, new research… Researchers recently found information about the Y chromosome in horses, which could identify optimal lineages for breeding and preserving breed diversity. When a mare loses a fetus, it can take months to get her back into cycle, thanks to the enduring nature of… Uterine infections, suboptimal ovulation timing, hormonal imbalance, and uterine cysts commonly reduce conception rates. Thorough reproductive exams and cycle management improve success. Embryo transfer, ICSI, and vitrification enable better genetic selection and fertility management for valuable mares and stallions. ART expands options when natural breeding is limited. Variants affecting muscle fiber composition, aerobic capacity, and metabolic efficiency are under study. Responsible use of genomics can inform selection without narrowing genetic diversity. Serial ultrasonography, hormone assays, and emerging biomarkers help identify risk before clinical signs. Prompt intervention and biosecurity reduce subsequent losses. Gene doping involves illicit genetic modification to enhance performance, raising serious welfare and integrity concerns. Governing bodies prohibit it and are developing detection tools. Appropriate immunization lowers systemic disease burden that can impair reproduction. Vaccination plans should be coordinated with breeding schedules to protect mare and foal. Ongoing research aims to map heritable traits, improve disease prediction, and integrate genomics into everyday veterinary decisions—strengthening breeding programs and foal outcomes.Reproduction
Is that mare in pain?
New Research Allows Geneticists to Trace Paternal Lines of Horses
UC Davis First to Produce Equine Embryos By In Vitro Fertilization With Frozen Sperm
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Heritability of SCD Low Among Thoroughbreds, But Still a Risk for Some Stallions
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A New Way to ‘Re-Cycle’ Your Mare
Frequently Asked Equine Theriogenology & Genetics Questions
What are common causes of infertility in mares?
How do assisted reproductive technologies improve breeding?
Which genetic markers influence equine performance?
How is early pregnancy loss detected and managed?
What is gene doping and why does it matter?
How do vaccines and immunity affect fertility?
What is the outlook for equine genomics?
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March 2026
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December 2023