Can Exercise Reduce Mare Fertility?

Mad About Horses

In this episode, Dr. Chris Mortensen, discusses the early stages of horse pregnancy and the effects of exercise and heat stress on equine fertility. He explains how critical the initial stages of embryo development are and how stressors can lead to the failure of pregnancy.

Dr. Mortenson recounts his dissertation work and subsequent studies on the topic, highlighting the physiological mechanisms behind these stressors and their impact on the reproductive cycle. He also delves into the ethics and challenges of conducting such research while ensuring animal welfare. The episode concludes with a look at male fertility under similar conditions and a touching story of the Dutch cohort study, emphasizing the importance of proper maternal care during pregnancy.

Podcast Timeline

00:00 The Beginning of a Horse's Life

01:27 Critical Early Stages of Pregnancy

04:02 Exercise and Stress Impact on Reproduction

05:41 Genesis of the Research

06:58 Heat Stress and Embryo Transfer

10:08 Research Methodology and Findings

24:34 Impact on Estrous Cycle and Embryo Quality

28:47 Follow-Up Studies and Broader Implications

34:03 Male Reproductive Health

36:13 Pregnancy and Nutritional Needs

42:22 Conclusion and Final Thoughts

Visit https://madbarn.com/mad-about-horses/ to learn more about the Mad About Horses podcast.

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