Official genetic evaluations from the Council on Dairy Cattle Breeding and the American Jersey Cattle Association are continuously published online. Reports for genomic evaluations of young bulls and females are updated the first Tuesday of each month.
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Updates to Jersey Performance IndexTM (JPI) and Jersey Udder IndexTM (JUI) as authorized by the American Jersey Cattle Association (AJCA) Board of Directors was implemented with the December 2023 official Council on Dairy Cattle Breeding (CDCB)-AJCA genetic evaluations.
"JPI 2023 is a strategy to identify high-performing, healthy, and long-lived Jersey cows, while driving the breed to higher protein production," AJCA Executive Secretary Neal Smith said. "The new JUI index follows the same strategy as the performance-based JPI 2023" index as it rewards high-performing, long-lived cows with durable udders. These two indexes are a positive step for the breed." Jersey Performance IndexTM is a breed-specific selection tool that has been continually reviewed and updated based on sound science and relative to current economic conditions since 1998. "The updates to JPI reiterates the importance of the index to continuing breed improvement," said John Metzger. "It is a management tool that will assist the dairy breeder in making high-producing, long-lived, and trouble-free cows in their herd." To learn more please read 2023 JPI Editorial
More than 2,400 Jersey owners have used the genomic services available through the American Jersey Cattle Association. The process is as simple as collecting the DNA sample, sending it to the lab, then applying the results of the evaluations. AJCA genomic testing adds power and precision to measure true genetic merit of Registered Jerseys. Genotypes for 30 traits and indexes including the breed specific Jersey Performance Index (JPI) and Jersey Udder Index (JUI), parentag verification and genomic inbreeding measures.
When the DNA component is included, genetic evaluations achieve from 60% to 80% reliability earlier in life and without waiting for her own production and type information. Because time is money, genomic testing is a tremendous investment in your herd's profit potential and genetic marketing opportunities.
New undesirable genetic factor identified in Jersey breed, known as Jersey Neuropathy with Splayed Forelimbs (JNS), has been identified in the Jersey breed. Calves affected with JNS are unable to stand on splayed forelimbs that exhibit significant extensor rigidity and/or excessive lateral abduction at birth. Affected calves are generally bright at birth but exhibit neurologic symptoms including spasticity of head and neck and convulsive behavior.
To learn more please read the press release