CDCB-AJCA Genetic Evaluations

Tuesday, February 2: Monthly release of genomic evaluations. Reports posted in PDF and Excel formats.

December CDCB-AJCA Official Genetic Evaluations 

All reports and documents have been posted for this evaluation release. For a table of averages and standard deviations for 103 Active A.I. (code A), 27 foreign bulls marketed in the U.S. (code F) and genomic evaluated young sires without daughters (code G), click here.

For reports from previous evaluations, see Archives tab.


Website Sections

For your convenience, this website has three tabs for Bull reports:

  • A, F & G Bulls (A.I. Marketed Bulls), with separate sections for the Herd Register and Genetic Recovery / Jersey Expansion lists, then a section titled Reference / Locator Lists that includes the Expanded Type Tables, Top 10 Bulls Ranked by Category, Sire Conception Rate and reference lists (A.I. marketed bulls listed in NAAB code order and also in short name order).
  • Monthly Genomic Bulls, with separate sections for Herd Register and Genetic Recovery / Jersey Expansion reports, and a third section with young sire locator lists. Note: Genomic Evaluated Young Sires reports are updated the first Tuesday of each month.
  • All Bulls, where you will find the All Summarized Bulls report, plus the two historical reports released the first day of each official run.

Most genetic evaluation reports have been split by animal registry status into two lists: (1) Herd Register status (HR, no prefix), and (2) eligible animals recorded through the Genetic Recovery and Jersey Expansion programs. The cutoff for the female Genetic Recovery-Jersey Expansion lists is determined by the lowest qualifying Jersey Performance Index™ (JPI) on the HR list.


Identification Program Changes Coming Early 2016

Since its organization in 1868, the American Jersey Cattle Association has provided the owners of Jersey cattle with simple, accurate records of identification as the basis for making the best possible genetic, management and marketing decisions.

From the original Herd Register documenting only animals whose pedigrees traced to the “mother country” of Jersey, the association has over time enlarged its recording programs to identify animals with degrees of Jersey ancestry through Genetic Recovery—a four-generation process to registration for Jerseys originating from unrecorded Jersey ancestors—and Jersey Expansion, a seven-generation process for recording animals originating from non-Jersey ancestors.

At its meeting last March, the AJCA Board of Directors closely examined both Genetic Recovery and Jersey Expansion. After lengthy discussion, the Board revised entry requirements for Genetic Recovery and restructured Jersey Expansion, continuing to define a clear pathway to registration for producers using the programs. The purpose of these actions was to increase accuracy of genetic evaluations and provide more transparent information about ancestry for all Jersey breeders.

Rather than being the endpoint in work to update AJCA identification programs to better serve the needs of Jersey owners, the March Board decisions were only the beginning.

At the 2015 Interbull scientific conference this past July, geneticists from the USDA Animal Genomics and Improvement Laboratory (AGIL) presented a paper on new research to evaluate the degree to which a breed is represented in an animal’s genetic makeup by comparing its genotype to that of the pure breed’s reference group. Detailed presentation of this research was made to the Board of Directors at a special meeting held September 10 and 11 in Columbus.

At that meeting, the Board voted to publish the genomic Breed Base Representation (BBR) of genotyped animals, defined as the animal’s genetic relationship to the purebred Jersey reference group, when the information is officially released by the Council on Dairy Cattle Breeding. A calculated BBR based on genotyped ancestors will be published for animals that are not genotyped.

Then at its meeting in November, after continued study, the Board of Directors voted to replace prefixes used in the Genetic Recovery and Jersey Expansion programs with a generation count suffix in the animal name that describes the depth of AJCA-recorded ancestry.

This concept provides a much simpler approach to recording animals than the four-generation process of Genetic Recovery and the Jersey Expansion seven-generation process.

The suffix will indicate the number of generations of AJCA-recorded ancestry in an animal’s pedigree from 1 to 6. The name of the first AJCA-recorded animal will include the generation count suffix of 1. The numerical designation for offspring will increase by one (1) from the lowest numerical generation designation of the sire or dam. No suffix will be used when animals have seven or more generations of AJCA-recorded ancestry.

These actions will simplify AJCA recording programs, contribute to greater accuracy in pedigrees and genetic evaluations, and improve transparency of information for breeders and A.I. organizations. The generational count designates depth of recorded ancestry, and Breed Base Representation provides a genomic assessment of an animal’s breed origin.

Implementation will occur simultaneously after official CDCB release of BBR information, expected in early 2016. Watch for more information in Jersey Journal and on the USJersey website.


Put the Power of Genomics To Work for You

Visit the infoJersey Genomic Testing Center for all your genotyping needs and get 24/7 access to evaluation reports:

  • Jersey LD test:  $37 per animal (male or female) in REAP herds, or $47 per animal for non-REAP herds, plus CDCB female fee or initial male fee (table below).
  • Jersey HD test:  $100 each animal, REAP herds, or $115 for all others, plus applicable CDCB fee.

 

Council on Dairy Cattle Breeding Fees