Your horse tested positive for the P3 variant -- now what?
 
This 5-page starter diet template was created by Stephanie Carter, FNTP, IHP, author of Managing Muscle Mayhem and Equine Functional Nutrition, to help you take the first step toward supporting your P3 horse through species-appropriate, functional nutrition.
 
The P3 variant affects Filamin C, a structural protein that distributes mechanical forces evenly throughout each muscle fiber during movement. P3 has a dominant negative effect, meaning even one defective copy of the gene actively interferes with normal proteins, often causing unpredictable and severe symptoms. This template addresses those root causes through targeted nutritional support designed specifically for the P3 variant.
 
What's included:
Plain-language explanation of what the P3 variant does, including its dominant negative effect
Key dietary principles specific to P3
Twice-daily feeding chart with serving ranges based on an 1,100 lb horse (scalable by body weight)
Region-specific product recommendations for the US, Canada, UK/Ireland, EU, and Australia/NZ
4-week transition schedule for safe diet changeover
Label-reading quick reference to identify ingredients to avoid
Important transition notes including detox expectations and why consistency is critical for P3
 
This template is designed for single-variant P3 horses. If your horse carries multiple variants, has metabolic challenges, or is not responding after 8-12 weeks, a personalized nutrition consultation is recommended at stephaniecarterntp.com.
 
This is a digital download (PDF). No refunds on digital products.
 
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