Jerseys have strengthened their place in the Australian dairy market with solid results in the December Australian Breeding Value release.
Jersey Australia general manager Glen Barrett said it was another positive release for Jerseys with overall strengthening of bulls, herds and cows.
"It's very positive to see bulls moving from genomic to proven list and maintaining proofs," Mr Barrett said.
On the critical Balanced Performance Index (BPI), Jerseys continued to press ahead, maintaining a strong average 385 BPI for the top 10 bulls.
"The BPI is quite stable and the positive is that as we have new daughters coming into proofs from winter and spring calving, we're continuing to see genomic bulls adding daughters and maintaining their proof, and the daughters are performing to expectations" Mr Barrett said.
Key bull movements included Douggan increasing 30 BPI with improved overall type, mastitis resistance and fertility, and Dobson up 31 BPI with improved fertility, overall type up six points and mammary up four points.
The BPI for the top 50 bulls increased from 340 BPI on average in August to 352 BPI, while overall type remained steady at 105.
Herd lists also improved on their BPI, with Robert and Sandra Bacon's Brookbora Jerseys at Tennyson in northern Victoria maintaining its top ranking with 204 BPI, up from 190 in August, followed by Con and Michelle Glennen's White Star Jerseys at Noorat in western Victoria with 202 BPI, up from 175 in August.
Warrain, Kings Ville and Kaarmona Jerseys rounded out the top five.
Heifers and cows were stable and in line with December reports.
There are now only 24 cows in the top 100 in milk cows not genomic tested, with Jersey Australia's test project starting to have an impact.
The top young cow with a BPI of 389 is owned by Matthew Hoffman, Timboon, Vic, the top genomic-tested cow with a BPI of 471 is Cairnbrae Valentino Daisy 11EX 94 recently bought at the record breaking Cairnbrae dispersal sale by DHGRS Singh from Collins Creek NSW and the top not genomic-tested cow with a BPI of 495 is owned by Cameron Green, Casino, NSW.
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