Breeding Stock

Zesterra® Helps Thrive Through Every Season

Whether you're managing a barn full of broodmares, a busy stallion station, or a small-scale breeding operation, keeping horses healthy, calm, and reproductively sound is key to a successful season. The stress of breeding season, travel, heat cycles, and environmental changes can negatively impact fertility and overall wellness. Zesterra® offers targeted gut and immune support to help horses stay in peak condition throughout the breeding season.
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Stress & Fertility: The Hidden Link

Stress triggers the release of cortisol, a hormone that suppresses the immune system and reproductive function. During breeding season, horses face multiple stressors:

  • Long-distance transport to and from breeding facilities
  • Stall confinement or exposure to unfamiliar environments
  • Live cover interactions with unfamiliar horses
  • Shifts in weather and temperature

For mares, stress can disrupt heat cycles and lower conception rates. For stallions, cortisol spikes can reduce semen quality and sperm count. Zesterra® helps mitigate the impact of stress by buffering excess acid in the stomach and supporting a balanced pH, protecting the gut lining and promoting overall health.
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Feeding & Digestive Support During Breeding Season

Stress and disrupted feeding schedules can lead to reduced forage intake, ulcers, and poor nutrient absorption. Zesterra® supports the digestive system in key ways:

  • Neutralizes excess gastric acid
  • Supports healthy gut flora and nutrient absorption
  • Helps prevent Leaky Gut Syndrome, colic, and digestive upset

By maintaining gut health, horses are better able to utilize nutrients critical to reproduction, energy, and immunity.
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Fertility Support for Mares & Stallions

Mares:

  • Maintain a healthy body condition (BCS 5-7) to support fertility and pregnancy
  • Monitor for regular heat cycles and test for uterine infections before breeding
  • Reduce stress from confinement with turnout, enrichment, and consistent forage access

Stallions:

  • Support sperm quality with proper nutrition and consistent management
  • Minimize stress through gentle handling and reduced isolation
  • Zesterra® aids nutrient absorption and immune support during demanding breeding periods

Seasonal stallions may only get a few months of downtime each year. Ensuring optimal digestive and immune health before, during, and after breeding season helps protect fertility and energy reserves.
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Immune Resilience for Breeding Facilities

Breeding barns are high-traffic environments where infectious diseases can spread quickly. Zesterra® supports:

  • A healthy gut barrier that contributes to stronger immune function
  • Appetite and hydration during times of transition or stress
  • Recovery from travel, vaccination, and exposure to new horses

Vaccination, deworming, and dental care should all be scheduled several weeks prior to breeding to avoid stress-related complications.
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Optimize Every Stage of the Breeding Cycle

From the pre-breeding evaluation through gestation and foaling, Zesterra® helps keep breeding stock balanced, resilient, and ready. Whether used daily or during high-stress periods, it provides the natural gut and immune support horses need to thrive.

  • Buffers stomach acid and supports pH balance
  • Promotes better digestion and nutrient uptake
  • Helps reduce the impact of stress on behavior and fertility
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Set Your Breeding Program Up For Success.
Healthy horses breed more consistently and reliably. Let Zesterra® be part of your program's success story.

📞 Have questions about incorporating Zesterra® into your breeding program? Reach out to speak with a Zesterra® Specialist today and create a plan tailored to your mares, stallions, and young stock.

💬 Or fill out the quick form below and we’ll get back to you within 1 business day.