This week, I explore ways to help horses that find it hard to gain weight.

Many horses struggle to gain weight, which is a significant concern for their owners, particularly during winter. Despite being well-fed, those horses often remain thin, unable to build and maintain muscle mass. It is a common issue, particularly among thoroughbred breeds with high metabolisms. As those horses age, keeping weight on them becomes even more challenging.

So, today, I share various dietary strategies to help hard keepers gain weight and improve their overall health.

Before deciding to increase the food intake to address weight loss in your horse, you need to rule out other potential health issues that may impact their ability to maintain weight.

Healthy teeth are crucial for a horse to chew and digest its food. Misalignment, sharp edges, missing teeth, abscesses, or sore gums can make eating uncomfortable, leading to weight loss. Symptoms like dropping food (quidding) could indicate dental issues. I recommend regular checks by an equine dentist to maintain oral health and efficient digestion.

Ulcers, particularly in performance horses, can significantly impact appetite and weight. Up to 80% of horses may have ulcers or related lesions. Symptoms include decreased appetite and rapid weight loss. Stress and medication can exacerbate ulcers, leading to a pot-bellied appearance and hollow flanks. Treatment often involves medication and dietary adjustments to support digestive health.

Leaky gut, caused by the over-fermentation of starches and sugars in the hindgut, leads to intestinal gas, heat, toxins, and systemic toxicity, causing weight loss, diarrhea, and laminitis. It is essential to support the hindgut and digestive health to manage and prevent those symptoms.

Active parasite infections interfere with nutrient absorption and can cause significant weight loss. Chemical dewormers are essential, as natural remedies are often ineffective against active infestations. Parasites can cause anemia and deplete vitamins and minerals, further impacting the health and weight of a horse.

Stress affects the ability of a horse to maintain weight. High stress can lead to muscle wasting, particularly in horses with conditions like Cushing's disease (PPID), so it is essential to manage stress through proper nutrition, environmental enrichment, and sometimes hormonal regulation.

Conditions like COPD or heaves can prevent proper blood oxygenation, making it difficult for horses to build mass and tissue. Addressing respiratory health and ensuring efficient gas exchange in the lungs is crucial for those horses to maintain or gain weight.

Fiber is essential for horses as it ferments into energy in the form of volatile fatty acids, fueling their cells. Ideal fiber levels in hay are crucial for energy and digestive health. However, too much fiber can be counterproductive if it is not digestible, requiring horses to eat more to meet their nutritional needs.

Providing hay 24/7 is essential, especially for hard keepers. Slow feeders can help to manage intake, but for horses that need to gain weight, loose hay or feeders with larger holes may be necessary to ensure they get enough calories. Owners should tailor the quality and type of hay to meet the needs of each horse.

Using different types of hay can help manage the dietary needs of a herd, especially when perfect hay is hard to find. It is beneficial to introduce variety and ensure the hay is