Christa Lesté-Lasserre, MA

Passionate about horses and science from the time she was riding her first Shetland Pony in Texas, Christa Lesté-Lasserre writes about scientific research that contributes to a better understanding of all equids. After undergrad studies in science, journalism, and literature, she received a master’s degree in creative writing. Now based in France, she aims to present the most fascinating aspect of equine science: the story it creates. Follow Lesté-Lasserre on Twitter @christalestelas.

Articles by: Christa Lesté-Lasserre, MA

Cooled Shipped Semen Quality Impacted by Collection Centers

When it comes to the quality of cooled shipped semen for artificial insemination (AI), all semen collection centers are not equal. They’re far from it, in fact, according to a new study by Austrian researchers. The huge variation in the quality of the sperm processed by the collection center has an impact on the probability of the broodmare becoming pregnant.

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10 Steps for Successful Artificial Insemination for Horses

Artificial insemination (AI) is today’s breeding standard for many types of horses. To find out how to make our readers’ artificial insemination programs more successful, The Horse went to two recognized experts in equine artificial insemination–both of them pioneers in their field.

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Researchers Study Early Postpartum Breeding in Horses

10 Steps for Successful Live Cover

Live cover breeding of horses remains a popular choice. Whatever your reason for choosing this method, these 10 tips will be useful as you plan a mating. Attention to safety and behavior go a long way in making the experience positive and successful.

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Prehistoric Horse Skeleton Unearthed in France

The full skeleton of a horse that lived in France 100,000 years ago has been discovered in the volcanic region of Auvergne, according to several French news sources including the French Press Agency (AFP).

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FEI General Assembly: NSAID Use Definitively Prohibited

The use of non-steroidal anti-inflammatory drugs (NSAIDs) in international equestrian competition is definitively prohibited, following a unanimous vote by the members of the Federation Equestre Internationale (FEI), the governing body for international equestrian sports, during their General Assembly meeting Nov. 1-5 in Chinese Taipei.

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Study: Horses Prefer Less Rein Tension

According to a new study by European equitation scientists, horses might prefer to avoid rein tension rather than just get used to it. And beyond a certain force threshold, rein tension can cause conflict behavior. To make the most of training and to keep the horse’s mouth sensitive, riders need to know when to apply less rein tension, generally when the horse displays conflict behavior.

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When do Broodmares at Pasture Need Supplemental Feed?

Endometritis in Horses Explained

Often, the only clinical sign of endometritis is not what you do see but what you don’t see: a pregnancy. Endometritis is a major cause of female infertility, affecting up to 15% of broodmares. But because it frequently lacks clear clinical signs, it often goes undiagnosed.

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Horses Reconcile, Support Each Other after Conflict

After a squabble in the field, horses might “kiss and make up”–at least in their own equine way. But even more often, post-conflict horses are visited by a “peacemaker,” probably to preserve the unity of the group, according to a new study by European researchers. Long-term pasturemates sometimes show reconciliatory behavior after a moment of conflict, and a t

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Study: Horse’s Stress Levels Increase During Events

Horses might experience increased stress during equestrian events and competitions, but that stress appears relatively mild and might even be beneficial according to new research by Austrian, German, and French equitation scientists.

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