Optim Equine

19/06/2026

𝙋𝙧𝙚𝙥𝙖𝙧𝙞𝙣𝙜 𝙮𝙤𝙪𝙧 𝙛𝙤𝙖𝙡’𝙨 𝙞𝙢𝙢𝙪𝙣𝙚 𝙨𝙮𝙨𝙩𝙚𝙢 𝙨𝙩𝙖𝙧𝙩𝙨 𝙗𝙚𝙛𝙤𝙧𝙚 𝙛𝙤𝙖𝙡𝙞𝙣𝙜…

When breeders think about preparing for foaling, they often focus on things such as nutrition, vaccinations, foaling facilities and monitoring the mare as her due date approaches.

But have you ever considered how the environment your mare is exposed to before foaling may influence the immune protection she passes to her foal?

Unlike humans, foals are born without circulating antibodies and are entirely dependent on the colostrum provided by their dam to help protect them against infection during those critical early weeks of life.

What’s particularly interesting is that the antibodies contained within that colostrum are influenced by the microorganisms present in the mare’s environment, as well as the pathogens she has encountered or been vaccinated against throughout her life.

This is one of the reasons mares are ideally relocated to their foaling property well before their due date.

Moving a mare at the last minute doesn’t simply increase the risk of travel-related stress. It may also reduce the opportunity for her immune system to recognise and respond to the microorganisms present in her new environment before colostrum production is complete.

In simple terms, the foal benefits when the mare has had time to become familiar with the environment in which she will foal.

This is a fascinating example of how a mare’s management before foaling can influence the health of her offspring long before the foal takes is even born.

In today’s video, I discuss the often overlooked relationship between a broodmare’s environment, colostral immunity and foal health, and importantly, when the best time to relocate a pregnant mare is.

Follow along throughout June as we continue exploring the many factors that influence fertility, pregnancy and foal development.

18/06/2026

𝙄𝙨 𝙮𝙤𝙪𝙧 𝙨𝙩𝙖𝙡𝙡𝙞𝙤𝙣 𝙛𝙞𝙩 𝙛𝙤𝙧 𝙗𝙧𝙚𝙚𝙙𝙞𝙣𝙜 𝙨𝙚𝙖𝙨𝙤𝙣? 𝙊𝙧 𝙟𝙪𝙨𝙩 𝙬𝙚𝙡𝙡 𝙧𝙚𝙨𝙩𝙚𝙙?

Many stallions spend months enjoying a relatively quiet lifestyle before being expected to suddenly cover multiple mares each day once the breeding season begins.

A recent conversation with a stallion manager made me laugh. He pointed out that we sometimes leave our stallions in the paddock during the off-season, doing very little structured exercise, and then expect them to perform at their peak throughout the breeding season, often covering three or four mares each day.

As he put it, it’s a bit like expecting someone to spend months sitting on the couch and then suddenly perform at their best when it matters most.

When we look at it that way, it’s not surprising that some stallions struggle with the physical and mental demands of the breeding season.

Breeding is physically demanding. As stallions fatigue, coverings can become more challenging, sometimes physically uncomfortable, and libido may begin to decline.

Yet fitness is often overlooked when discussing fertility and reproductive performance.

Appropriate conditioning doesn’t simply help prepare a stallion for the physical demands of covering mares.

Exercise also influences metabolic health, inflammation, testosterone production and reproductive function. It is closely linked to body composition as well—something we discussed earlier in this series and a factor that can significantly influence fertility.

Research has demonstrated relationships between exercise, testosterone production and semen quality, making fitness an important consideration for any breeding stallion.

This is why I encourage breeders and stallion managers to think about preparing stallions for the breeding season well before the first mare is covered, rather than trying to build fitness once the season has started.

Breeding season is approaching.

Now is the ideal time to ask whether your stallion is truly prepared for the demands of the season ahead.

We often spend considerable time preparing mares for the

18/06/2026

17/06/2026

𝗪𝗵𝗲𝗻 𝘄𝗲 𝘁𝗿𝗲𝗮𝘁 𝘁𝗵𝗲 𝗺𝗮𝗿𝗲, 𝗵𝗼𝘄 𝗮𝗿𝗲 𝘄𝗲 𝗶𝗺𝗽𝗮𝗰𝘁𝗶𝗻𝗴 𝘁𝗵𝗲 𝗵𝗲𝗮𝗹𝘁𝗵 𝗼𝗳 𝗵𝗲𝗿 𝗳𝗼𝗮𝗹?…

When a broodmare is at risk of placentitis or another condition requiring antimicrobial treatment, our immediate focus is understandably on protecting the pregnancy and supporting the health of both the mare and foal in utero.

But have you ever stopped to consider the potential implications these treatments may have beyond the pregnancy itself?

A foal’s microbiome is not developed in isolation from its mother.

The mare plays a significant role in establishing the microbial populations (either healthy or unhealthy) that will colonise her foal during and after birth, helping to shape the foundation of gastrointestinal health, immune development and function and overall wellbeing.

This is why the use of antibiotics and other antimicrobial therapies during pregnancy presents an important consideration.

While these treatments may be indicated, they can also influence microbial populations within the mare. As our understanding of the equine microbiome continues to evolve, so too does our appreciation for the potential long-term significance of these changes.

When antibiotic intervention is required, it is important to consider how we can best support both mare and foal throughout the process.

In today’s video, I discuss the relationship between antimicrobial use, the maternal microbiome and the developing foal, and why this is something every breeder and stud manager should seriously consider before foaling season arrives.

As breeders, our focus is often on achieving and maintaining pregnancy. But we should also focus on promoting and supporting the healthiest foal with the best potential athletic future ahead of it.

The foundations of a foal’s future health are being established long before it is even born.

If your mare is receiving, or is likely to require, antimicrobial therapy during pregnancy, now is an excellent time to consider the broader picture and the strategies available to support both mare and foal.

Follow al

16/06/2026

𝗪𝗵𝗲𝗻 𝗮 𝗺𝗮𝗿𝗲 𝘀𝗰𝗮𝗻𝘀 𝗲𝗺𝗽𝘁𝘆, 𝗮𝗿𝗲 𝘆𝗼𝘂 𝗹𝗼𝗼𝗸𝗶𝗻𝗴 𝗶𝗻 𝘁𝗵𝗲 𝗿𝗶𝗴𝗵𝘁 𝘁𝗶𝗺𝗲𝗳𝗿𝗮𝗺𝗲?

One of the most common mistakes I see when investigating disappointing pregnancy rates is focusing only on what was happening around the time a mare was covered.

For example, if a mare returns a negative 14-day pregnancy scan, it’s natural for our reaction to consider: “What was happening with the stallion 14 days ago?”

Yet, this may be completely overlooking contributing factors to that patch of poor fertility...

As we’ve discussed in previous videos, s***matogenesis (the process of s***m production and maturation) takes approximately 57 days.

This means the s***m responsible for that negative pregnancy scan were actually being developed many weeks before the mare was bred.

By the time a mare is scanned empty, the events that influenced s***m quality may have occurred two months earlier.

Changes in health, nutrition, inflammation, illness, medication use, management practices, stress and numerous other factors during this period may all influence the quality of the s***m eventually used to breed mares.

This is why thorough fertility investigations should consider a horse’s past health history: not just what has occurred recently.

To truly understand reproductive performance, we often need to look back and examine what was happening during the weeks and months leading up to conception.

In today’s video, I explain why timing matters when assessing stallion fertility and why understanding the timeline of s***matogenesis can completely change how we approach fertility challenges.

The most successful breeding programs are those that support stallion health and fertility long before pregnancy scans begin to reveal the consequences.

Follow along throughout June as we continue exploring the many factors that influence equine fertility and reproductive success.

15/06/2026

𝐖𝐡𝐚𝐭 𝐝𝐨𝐞𝐬 𝐭𝐡𝐞 𝐠𝐮𝐭 𝐡𝐚𝐯𝐞 𝐭𝐨 𝐝𝐨 𝐰𝐢𝐭𝐡 𝐭𝐞𝐬𝐭𝐨𝐬𝐭𝐞𝐫𝐨𝐧𝐞 𝐚𝐧𝐝 𝐟𝐞𝐫𝐭𝐢𝐥𝐢𝐭𝐲?…

When breeders think about testosterone in their stallions, they typically think about the te**es.

And while the te**es are responsible for producing testosterone, they are not the only factor influencing hormone balance and reproductive function.

Emerging research continues to highlight the important relationship between the gut microbiome and hormone metabolism.

The microbial populations residing within the gastrointestinal tract don’t simply influence digestion.

They interact with the immune system, inflammatory pathways, nutrient metabolism and numerous physiological processes throughout the body, including those involved in reproductive health.

This is one of the reasons I place such a strong emphasis on gastrointestinal health when working with breeding stallions.

Too often, fertility is viewed solely through the lens of semen quality, libido or hormone levels, without considering the underlying factors that may be influencing those outcomes.

In clinical practice, some of the most significant improvements in health and reproductive performance often occur when we stop looking at individual apsects of their health or reproductive performance in isolation and instead assess the stallion as a whole.

In today’s video, I discuss the fascinating relationship between gut microbial health and testosterone metabolism, and why the gastrointestinal tract deserves far more attention in conversations about stallion fertility from this aspect alone.

Breeding season is approaching.

Now is the ideal time to investigate the factors that may be influencing your stallion’s health and reproductive performance, rather than waiting until fertility challenges emerge during the season itself.

Sometimes the aspects having the greatest influence on fertility are not the ones we immediately think of.

14/06/2026

𝐃𝐨𝐞𝐬 𝐚𝐠𝐞 𝐡𝐚𝐯𝐞 𝐭𝐨 𝐦𝐞𝐚𝐧 𝐝𝐞𝐜𝐥𝐢𝐧𝐢𝐧𝐠 𝐟𝐞𝐫𝐭𝐢𝐥𝐢𝐭𝐲?…

As stallions age, it is normal to see changes in reproductive physiology and performance.

Testosterone levels may decline, s***m quality can be affected, and fertility may not always be as good as it was during a stallion’s younger years.

For many breeders and stallion managers, these changes are simply accepted as an inevitable consequence of aging.

Not all stallions age the same way reproductively. Too often, declining fertility in older stallions is accepted as inevitable, when there may be opportunities to significantly support reproductive function and overall health.

Factors such as nutrition, inflammation, metabolic health, body composition, oxidative stress, gastrointestinal health and function and overall management can all influence how well a stallion ages and how successfully he maintains reproductive performance.

In clinical practice, I’ve found that older stallions often respond exceptionally well when their nutrition, health and reproductive management are approached strategically and proactively.

In today’s video, I discuss the natural effects of aging on fertility, testosterone production and s***m quality, and why a proactive approach to health and reproductive management can be particularly important for older breeding stallions.

Breeding season is quickly approaching.

For owners and managers of aging stallions, the greatest advantage lies in being proactive. Identifying and addressing potential barriers to fertility now is far easier than trying to recover lost ground once the breeding season has begun.

13/06/2026

𝙒𝙝𝙚𝙣 𝙛𝙚𝙚𝙙𝙞𝙣𝙜 𝙗𝙖𝙨𝙚𝙙 𝙤𝙣 𝙗𝙤𝙙𝙮 𝙬𝙚𝙞𝙜𝙝𝙩 𝙖𝙡𝙤𝙣𝙚 𝙝𝙪𝙧𝙩𝙨 𝙧𝙚𝙥𝙧𝙤𝙙𝙪𝙘𝙩𝙞𝙫𝙚 𝙤𝙪𝙩𝙘𝙤𝙢𝙚𝙨…

One of the most common feeding mistakes I see in both broodmares and stallions is feeding solely to achieve or maintain a desired body condition.

Body condition absolutely matters. As we have already discussed in earlier videos, overweight mares and stallions can experience negative reproductive consequences- which also affect their offspring.

However, achieving the “right” body condition does not necessarily mean a horse’s nutritional requirements are being met.

A stallion may look healthy, carry appropriate condition and still have nutritional deficiencies that influence testosterone levels, s***m health and reproductive performance.

Likewise, a broodmare may maintain ideal body weight while falling short of the nutrients required to support her own health, pregnancy and the healthy development of her foal.

Nutrition is about far more than calories.

Adequate dry matter fibre, protein quality, vitamins, minerals and essential fatty acids all play important roles in reproductive function, fertility and foetal development.

This is why feeding breeding horses should never be based on body weight or appearance alone.

When we decide what we will feed our horses, we shouldn’t just ask ourselves: “Does my horse look good?” But rather, “Are my horse’s nutritional requirements actually being met in ways that support optimal health and fertility, whilst keeping them in appropriate body condition?”

In today’s video, I discuss why feeding for body condition and feeding for nutrient requirements are not necessarily the same thing, and why understanding the difference can be so important for fertility and reproductive success.

Breeding season is approaching.

Now is the ideal time to evaluate feeding programs and identify potential nutritional gaps to help promote the best fertility and reproductive outcomes in our stallions and mares.

12/06/2026

𝗖𝗼𝘂𝗹𝗱 𝘆𝗼𝘂𝗿 𝗵𝗼𝗿𝘀𝗲’𝘀 𝗱𝗲𝗻𝘁𝗮𝗹 𝗵𝗲𝗮𝗹𝘁𝗵 𝗯𝗲 𝗮𝗳𝗳𝗲𝗰𝘁𝗶𝗻𝗴 𝗳𝗲𝗿𝘁𝗶𝗹𝗶𝘁𝘆?

When most people think about dental health, they think about chewing, maintaining body condition and getting the most from a feed ration.

And while these are certainly important, the implications of poor dental health may extend far beyond the mouth.

The mouth is not isolated from the rest of the body. Chronic dental disease and oral inflammation can contribute to systemic inflammation, placing ongoing demands on the immune system and influencing physiological processes throughout the horse.

Poor oral health may also influence gastrointestinal health. The oral microbiome forms the beginning of the digestive tract, and disturbances in oral health may affect microbial balance further down the gastrointestinal system. Given the important relationship between gut health, inflammation, immune function and reproduction, this is another reason oral health deserves consideration when preparing breeding horses for the season ahead.

For stallions, inflammation and oxidative stress may negatively influence s***m quality and reproductive performance. For broodmares, systemic inflammation may influence ovarian function, egg quality and the ability to establish and maintain a healthy pregnancy.

This is why I encourage breeders to think beyond the reproductive tract when preparing mares and stallions for the breeding season.

In today’s video, I discuss the often-overlooked relationship between dental health, inflammation and fertility, and why regular dental assessments should form part of every breeding horse’s health program.

Breeding season is approaching.

Now is the ideal time to identify and address issues that may be quietly influencing reproductive performance before mares are being bred and stallions are covering or collecting.

Sometimes the factors that influence fertility are found in the places we least expect.

Follow along throughout June as we continue exploring the many factors that influence equine fertility and reproductive success.

11/06/2026

𝘼𝙧𝙚 𝙮𝙤𝙪 𝙛𝙚𝙚𝙙𝙞𝙣𝙜 𝙮𝙤𝙪𝙧 𝙥𝙧𝙚𝙜𝙣𝙖𝙣𝙩 𝙢𝙖𝙧𝙚 𝙖𝙥𝙥𝙧𝙤𝙥𝙧𝙞𝙖𝙩𝙚𝙡𝙮 𝙛𝙤𝙧 𝙝𝙚𝙧 𝙨𝙩𝙖𝙜𝙚 𝙤𝙛 𝙥𝙧𝙚𝙜𝙣𝙖𝙣𝙘𝙮...

One of the most common misconceptions I encounter is the belief that a mare’s nutritional requirements remain relatively unchanged throughout pregnancy.

In reality, the nutritional demands of pregnancy are dynamic and change significantly as gestation progresses.

As the developing foal grows, so too do its requirements for energy, protein, amino acids, vitamins, minerals and other nutrients essential for healthy growth and development.

This is particularly important when we consider the developing musculoskeletal system.

The foundations of skeletal health are established long before a foal takes its first steps, and the nutritional environment experienced during pregnancy can influence growth, development and long-term orthopaedic outcomes.

Yet many mares are fed the same ration throughout gestation, without consideration for how their requirements change over time.

Optimal broodmare nutrition is not simply about maintaining body condition.

It’s about ensuring the mare receives the right nutrients, in the most appropriate amounts, at the correct stages of pregnancy to support both her health and the healthy development of her foal.

In today’s video, I discuss why a mare’s nutritional requirements change throughout pregnancy and why feeding appropriately for each stage of gestation is such an important part of breeding management.

Follow along throughout June as we continue exploring the factors that influence equine fertility, pregnancy and foal development.