1. What is the Inbreeding Coefficient (COI)?

The Coefficient of Inbreeding (COI) measures the probability that two alleles at any locus in an individual are identical by descent from a common ancestor. It's a crucial metric in dog breeding to manage genetic diversity and reduce the risk of inherited disorders.

2. How Does the Calculator Work?

The calculator uses the COI formula:

Where:

• \( n1 \) — Number of generations from the sire to the common ancestor
• \( n2 \) — Number of generations from the dam to the common ancestor

Explanation: The formula calculates the probability that two alleles are identical by descent based on the number of generations separating the parents from their common ancestors.

3. Importance of COI Calculation

Details: Monitoring COI helps breeders maintain genetic diversity, reduce the risk of inherited diseases, and make informed breeding decisions for healthier litters.

4. Using the Calculator

Tips: Enter the number of generations from both sire and dam to the common ancestor. Values must be non-negative integers.

5. Frequently Asked Questions (FAQ)

Q1: What is considered a safe COI percentage?
A: Generally, COI below 6.25% is considered low risk, but breed-specific guidelines may vary. Always consult breed-specific recommendations.

Q2: How does COI affect dog health?
A: Higher COI increases the risk of inherited disorders and reduces genetic diversity, which can impact overall health and vitality.

Q3: Should COI be the only factor in breeding decisions?
A: No, COI should be considered alongside health testing, temperament evaluation, and conformation standards.

Q4: How often should COI be calculated?
A: COI should be calculated for every potential mating to make informed breeding decisions.

Q5: Can COI be reduced in a breeding program?
A: Yes, by introducing unrelated bloodlines and avoiding close relative matings, COI can be managed over generations.