ICC™ Index for Jerseys
The ICC$™ index - meant for choosing Jersey sires that create ideal commercial cows - utilizes multiple data sources, is economic-based, is real-time and flexible and is the summation of three easy-to-use sub-indexes.
The sub-index makeup enables you to narrow genetic emphasis to a specific area of farm management. The sub-indexes and their weightings in the overall index are: 43% Cheese Maximizer (ChMAX$), 35% Sustainability (SUST$) and 23% Fertility (FERT$).
The combination of trait weightings, each individual trait's heritability, and trait correlations and relationships enable the ICC$™ index to accomplish the goals you - our members and customers - requested in the development of this commercial cow index.
The Cheese Maximizer (ChMAX$) sub-index focuses on component yields and provides equal weightings on fboth Fat and Protein. Unique among Jersey indexes, the ICC$™ index is neutral on milk - instead of focusing on the total Combined Fat and Protein yield.
The Sustainability (SUST$) sub-index is made up of traits for improved, sustainable health and longevity. Among the traits is a new proprietary trait, Calf Survivability (CSRV). Also included are udder traits that have an impact on culling rate (Udder Depth, Udder Cleft, Fore Udder and Teat Length). Selection for the SUST$ sub-index emphasizes udder health, longevity, functional udder traits and calf survivability. These are all critical to keeping animals healthy and in production.
- » 35% Productive Life
- » 15% Udder
- » 14% Livability
- » 12% Calf Survivability
- » 12% Mastitis Resistance
- » 12% Somatic Cell Score
The Fertility (FERT$) sub-index contains five measures of cow and heifer fertility. This sub-index includes the proprietary trait Age at First Calving (AAFC) to meet the needs of producers looking to emphasize reproductive efficiency. Selection of bulls with high FERT$ rankings results in optimal age at first calving, reduced days open and shorter calving intervals.
- » 50% Daughter Pregnancy Rate
- » 25% Heifer Conception Rate
- » 15% Cow Conception Rate
- » 5% Age at First Calving
- » 5% Fertility Haplotypes