Cattle breeding is full of myths and the question is are they true or fake. In MythBuster NAV will test with facts if the myths are just myths or if they actually are true.
The first myth is about older cows and if their progeny really is better.
Find out if the myth is true or fake from the paper Older cows with proven potential, give better heifers .
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.
Read more from the NAV newsletter.
NAV Interbull Search has been also updated with new Interbull breeding values.
Saved feed was included in the Nordic Total Merit (NTM) in 2020 for all breeds. With the introduction of new saved feed index in February 2025, its weighting in the NTM for Holstein has been adjusted. The new weight for saved feed is 0.18, more than double the previous value of 0.08. For NTM, 10 index units in saved feed will change NTM by one unit. A bull with 110 in saved feed will increase NTM by one unit according to the changed weight for saved feed.
The introduction of the new saved feed index has also changed the correlation between NTM and saved feed, not only for Holstein but for all breeds. The updated NTM correlations can be found on NAV homepage.
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.
Read more from the NAV newsletter.
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.
Read more from the NAV newsletter.