Generation Count and Publication of Breed Base Representation
On Tuesday, June 7, the AJCA received official BBR values for all genotyped Jerseys, male and female, from the Council on Dairy Cattle Breeding.
BBR values in conjunction with Generation Count now provide the complete picture intended by the Board’s actions dating from the fall of 2015. Together, Generation Count and Breed Base Representation:
Generation Count is how you assess, at a glance, the depth of known Jersey ancestry in the pedigree of an animal recorded by the AJCA.
Breed Base Representation uses genomic data to estimate the extent to which alleles of breed reference groups appear to be represented in an animal’s genetic makeup.
PUBLICATION ON AJCA DOCUMENTS: Update (July 11, 2016)
CDCB policy is to report a value of 100 for animals that have a BBR of 94 and greater. BBR values of 93 and lower are reported as calculated.
The monthly genomic evaluations are posted in the Green Book Online, as follows:
Our staff is completing revisions to the many different reports and documents you use, from pedigrees and performance reports to JMS sale catalogs. BBR values are also included in our powerful search-sort-select application, BullsEye.
by reading AJCA Pedigree Recording and Registry Status. A NEW fact sheet for using Generation Count and BBR has been added to the website.
The decisions of the Board of Directors simplify and modernize AJCA animal identification services. We are confident that when you see how Generation Count and BBR work in tandem, you will agree.
Neal Smith, Executive Secretary & Chief Executive Officer