Guide 8: Inherited Health Ratings 🧬🏥

Published: Dec 2025 | Category: Health & Breeding 🌟

Health ratings are genetic traits that are critical for a horse's long-term value, affecting lifespan and breeding success. They dictate how prone a horse is to future illness, though most disease effects are not yet implemented in the game. Stable Tracker tracks these 6 crucial metrics.

The 6 Critical Health Stats 🩺:

Unlocking Health Stats 🔑:

All health stats are hidden upon a foal's birth. To reveal them:

• The 5 illness traits (Colic, Hoof, Back, Respiratory, Lameness) are revealed by a Health Check at the Veterinary 💉.
• The Fertility stat requires a separate Fertility Test on an adult horse (3 years or older).

Fertility: The Immediate Impact 📉:

Fertility is the only stat that currently has a tangible effect on gameplay.

• A Stallion's fertility determines his semen quality, which directly influences the chance of a failed pregnancy.
• A stallion with Excellent fertility has only a 5% chance of a failed covering, while a Poor stallion can have up to a 40% chance of failure!
• A Mare's fertility does not affect her current pregnancy success, but it is a hereditary trait that dictates her foal's future breeding value.

Breeding for Genetic Health 💖:

Health ratings (Excellent, Very Good, Good, Average, Poor) are inherited semi-randomly, but tend to regress towards the average of the sire and dam.

The best strategy is to ensure both parents have "Very Good" or "Excellent" ratings across all 6 stats. You can use a high-rated stallion to offset a specific weakness in your mare (e.g., breeding a mare with Average Colic Resistance to a stallion with Excellent Colic Resistance).

Long-Term Value Tip: Horses with excellent health ratings sell for a premium 💎 and require less maintenance, making them essential for a profitable and high-performing stable.