When managing the good doer, much of the focus is often placed on reducing calorie intake. While this is important, it’s only part of the picture. Maintaining and, where appropriate, developing muscle is a key component of both effective weight management and long-term health.
For the working good doer, the goal is not simply weight loss, but improving body composition; reducing excess fat while supporting lean muscle mass.
Why Muscle Matters
Muscle plays an important role in:
- Energy utilisation – muscle is metabolically active tissue
- Calorie expenditure – more muscle can support increased energy use at rest and during exercise
- Injury prevention – improved strength supports joints and soft tissues
- Performance and recovery
For horses prone to weight gain or metabolic concerns, improving muscle mass can support insulin sensitivity and overall metabolic health, making it a valuable tool alongside dietary management.
Weight Loss vs Body Composition
Not all weight loss is equal.
A horse may lose weight, but if this includes a loss of muscle rather than fat, this can negatively impact performance, posture, and resilience. In some cases, particularly in horses with metabolic conditions, muscle loss is already a concern due to altered protein metabolism and reduced muscle function.
The aim should be to:
- Reduce fat while preserving, or building, muscle
Start with Assessment
Before making changes, it’s important to assess both:
- Body condition (fat)
- Muscle development (topline)
Tools such as body condition scoring and muscle scoring systems, such as topline evaluation, can help provide a baseline and track progress over time.
Nutrition – Providing the Building Blocks
Muscle development relies on providing:
- Adequate energy (calories)
- Quality protein (amino acids)
Horses have a requirement for amino acids rather than crude protein, meaning quality is more important than quantity. A lack of key amino acids, rather than insufficient total protein, is often the limiting factor in muscle development.
Forage will contribute to protein intake, but some of this is less accessible, particularly in more mature or fibrous forage. As a result, the bucket feed often plays a role in balancing the ration.
Supporting the Good Doer
For good doers, this presents a challenge: how do we support muscle without adding unnecessary calories?
Practical strategies include:
- Ensuring the ration is balanced for vitamins, minerals, and amino acids
- Avoiding excessive restriction that may compromise protein intake
- Using low-calorie balancers or supplements to support nutrient provision
Where feeding below recommended levels of compound feed, a vitamin and mineral supplement, such as a balancer-type product, can help ensure requirements are still met without increasing calorie intake.
Where additional support for muscle development is required, products providing targeted amino acids may be useful. For example, supplements such as Muscle Maker or Optima BCAA Powder can help provide key amino acids to support muscle maintenance and development, particularly where forage or base rations may be lacking.
The Role of Exercise
Nutrition alone will not build muscle.
Appropriate, progressive exercise is essential to stimulate muscle development. This should be tailored to the individual horse, taking into account:
- Current fitness level
- Workload
- Any underlying conditions
For good doers, increasing exercise not only supports muscle development but also contributes to energy expenditure, supporting weight management.
Avoiding Common Pitfalls
- Over-restricting the diet – can limit protein and nutrient intake
- Focusing on weight alone rather than body composition
- Feeding excess protein without considering quality
- Expecting rapid change – muscle development takes time, often 6+ weeks depending on workload
Bringing It All Together
Supporting muscle in the working good doer is about balance. By combining:
- A well-balanced, forage-based ration
- Appropriate amino acid provision
- Consistent, progressive exercise
…you can improve body composition, support metabolic health, and reduce the risk of injury, all while working towards sustainable weight management.
Take-Home Points
- Muscle is key to both performance and metabolic health
- Focus on body composition, not just weight loss
- Provide quality protein (amino acids), not just crude protein
- Avoid over-restriction that compromises nutrient intake
- Combine nutrition with appropriate exercise
