What is one of the indexes used to measure the breeding performance in genetic monitoring?

• A. Breeding Index
• B. Performance Index
• C. Reproductive Index
• D. Therapeutic Index

Answer: (A)

The Breeding Index is the measure used to assess breeding performance in genetic monitoring because it combines multiple heritable traits into a single score that reflects overall genetic merit for breeding. By weighting traits that matter for future generations—such as litter size, survival, growth, and health—according to their importance and heritability, the index provides a clear, comparable metric to rank animals for breeding decisions. This helps track genetic progress over time and guides selection to improve the colony's genetics while managing inbreeding.

Therapeutic Index is a pharmacology term related to drug safety, not genetic breeding. Reproductive Index would focus on fertility-related metrics but is not the standard composite index used for overall breeding merit. Performance Index is more about general performance and not specifically the integrated breeding merit used in genetic monitoring.