Dairy breeding: bull selection is critical : vimarsana.com

Dairy breeding: bull selection is critical


The changes in 2020 were to reduce the weighting of genomics in the proof.
Much like the dog that didn’t bark in the Sherlock Holmes story, the letters to the editor in last week’s paper were notable for what they didn’t mention.
The dairy article (17 April 2021) to which the letters from Bernard Eivers of NCBC and Andrew Cromie of ICBF refer, has four key points:
That some AI companies are pushing high-milk-volume bulls in their bull panels.
That high-milk-volume bulls require more feed than lower-milk-volume bulls even at the same milk solids.
That 11 of the 18 bulls on one bull panel are from just three sires, each of which has suffered a substantial drop in their EBI.

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