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Proof Run

  • 3 New No 1 Red & White Sires!

    Mastergen provides breeders with the best selection of R&W sires!

  • Semex Genomic Sires Dominate UK Type Charts

    The latest proof run with a revised Type Merit (TM) calculation sees continued domination by Semex of the genomic sire rankings, with one in five of the top 50 ranked on TM having been bred or acquired by the company, including the top two bulls, and four of the top ten.

  • Cogent remains No.1 choice for Genomic Bulls

    Maintaining his position as the world’s highest PLI genomic sire available in the UK, Mr Rubi-Agronaut is now the only bull over the £800 PLI barrier at an impressive £812. Sired by Rubicon, one of Cogent’s proven highlights, Agronaut offers many of the traits desired on farm, offering positive Fat (+0.22%) and Protein (+0.09%) and is a breed leader in terms of Fertility index at a massive +13.1.

  • Cogent leads the proven bull rankings

    There was plenty of cause for celebration this week at Cogent when Mr Moviestar Mardi Gras propelled himself to the top of the Type Merit rankings boasting the highest score of any proven or genomic bull at +3.64 TM.

  • New Graduates Set To Deliver Profit From Genetic Progress

    ​Genus ABS reaffirm their status as the leaders in delivering Profit from Genetic Progress with the addition of seven new genomic sires averaging over £717 PLI to their line up following the December proofs.

  • 05 Dec 2017

    Top milk quality bull continues to lead young Holstein ranking

    One of the top milk quality improvers of the Holstein breed, Mr Rubi-Agronaut, leads the way amongst genomic, young sires in the new AHDB Dairy indexes, with a December 2017 Profitable Lifetime Index (PLI) of £812. Retaining the position he has held throughout the year, Agronaut transmits fat and protein percentages at +0.22% and +0.09% respectively, and also has the highest Type Merit of the top 20 sires at +3.12. This type score reflects the new emphasis on bulls with smaller stature in Holstein UK’s newly revised Type Merit formula.

  • 07 Dec 2017

    Mogul Sons and Grandsons Rise to the Top

    New type merit sees Mogul sons and grandsons rise to the top in December 2017 Holstein ranking lists

  • 05 Dec 2017

    Three young sires makes their debut amonst proven top 10

    The number one position in the new Profitable Lifetime Index (£PLI) rankings for daughter-proven Holstein bulls is held by long-term leader, Gen-I-Beq Lavaman. This bull has almost 100 more UK daughters contributing to his figures since they were published by AHDB Dairy last August, now clocking up more than 1,000 milking in the UK. He earns a PLI of £690, reflecting his balanced breeding profile, with a very high Predicted Transmitting Ability (PTA) for protein percent (+0.18%) and low daughter maintenance costs (-9).

  • New stars expand the quality line-up at Cogent

    Following the August proof run published by AHDB Dairy, Cogent Breeding has some fantastic new release sires to bolster an already abundant line up. With many bulls going up on PLI, Cogent have had an exceptional proof run.

  • World Wide Sires Genetics Deliver

    Holstein sire Seagull-Bay Supersire-ET tops the rankings this August 2017 proof run as the new UK number one daughter proven sire for milk, fat, and protein. Delivering 1290kg milk, 45.9kg fat and 37.1 protein, the bull ranks highly for PLI at £571 and offers a semen conception rate (SCR) of +1.6.