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Genetic base cow updated to reflect progress

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The genetic base cow – the genetic reference point for all dairy cattle in New Zealand – has been updated this month to become younger, moving from a 2000 to a 2005 born base cow.

The genetic base is updated every five years by New Zealand Animal Evaluation Limited (NZAEL).

In a media release, NZAEL manager Jeremy Bryant said the base cow update reflected genetic progress and prevented the gap between today’s animals and the genetic base becoming too large, thereby keeping the scale of genetic predictions relevant.

“Every year, there is genetic improvement in …

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CRV Ambreed genomic evaluation systems explained

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gNZMI, gBW are quoted for  bulls whose breeding values are calculated using CRV Ambreed genomic evaluation systems combining parentage, progeny, genomic and Interbull information. gNZMI uses the same weightings for the traits that are used for NZMI. gBW uses the same Economic Values for traits as BW. Based on the latest data, genomic biases have been adjusted for, but additional, non-quantifiable biases are present that make direct comparison with BW or LIC’s gBW estimates invalid.

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