Evaluations

The first NAV routine evaluation for dairy and for beef x dairy for this year took place as scheduled. NAV Bull Search and NAV Beef Search have been updated with new breeding values.

There were no changes in the dairy evaluation but in the beef x dairy evaluation two changes were introduced.

The definition of the genetic base was slightly modified to include only crossbred animals (born 2-5 years ago) born after beef sire breed that can be used in all three counties. The exclusion of crossbreds after Belgian Blue sires implies no change in ranking of the sires but a change in the average level of the breeding values. For example, for Carcass conformation score all bulls got an increase of about 8 units due to the change in base definition.

Further, a fee system was introduced which implies that for all bulls that should get published EBVs for the first time after 1^st of January 2020 two criteria should be fulfilled:

• A required level of reliability of the EBVs
• A one-time fee for the AI bull payed by the bull owner/importer of semen

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The latest NAV routine genomic evaluation took place as scheduled. NAV carried out genomic prediction for Holstein, RDC and Jersey.

Genomic breeding values of bulls are updated to NAV Bull Search after each evaluation.

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The latest NAV routine genomic evaluation took place as scheduled. NAV carried out genomic prediction for Holstein, RDC and Jersey.

Genomic breeding values of bulls are updated to NAV Bull Search after each evaluation.

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NAV Interbull Search has been also updated with new Interbull breeding values.

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NAV has launched a new NAV Beef Search for beef bulls. With NAV Beef Search it is possible to search for beef bulls that have either pure beef progeny or crossbred progeny. In the beginning NAV Beef Search will only include beefxdairy search which includes the results of NAV beefxdairy evaluation.

NAV Beef Search has many of the same features as NAV Bull Search and NAV Interbull Search and it is very easy to use.  The search page contains all publishable breeding values and other relevant information for the AI beef bulls included in the evaluation. The user have to select the appropriate rearing period (short or long) to get the result. Bulls can be found according to the breed, birth country, birth year or by name. It is possible to sort bulls by different breeding values. More information is found on the bull’s own page.

NAV beefxdairy breeding values are published four times a year in connection to NAV evaluations for dairy (February, May, August and November).

The results of Interbeef and NAV Beef evaluations will be implemented to NAV Beef Search later.

NAV Beef Search can also be reached directly from NAV start page.

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The fourth NAV routine evaluation for this year took place as scheduled. The NAV Bull Search has been updated with new EBV’s and GEBV’s.

In this evaluation NAV published GEBV’s for the first time for saved feed, persistency, carcass conformation score and daily carcass gain.

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