The latest NAV routine evaluation for yield, fertility, type, udder health, other diseases, calving traits, milk ability, temperament, growth and NTM took place as scheduled. NAV carried out three evaluations per trait group.
Holstein evaluation, including data from: Danish Holstein, Danish Red Holstein, Swedish Holstein, Finnish Holstein, Finnish Ayrshire and Finn Cattle.
Red Dairy Cattle evaluation, including data from: Danish Red, Swedish Red, Finnish Ayrshire, Finnish Holstein and Finn Cattle.
Jersey evaluation, including data from: Danish Jersey and Swedish Jersey (only yield and type).
Extraction dates
Dates for extraction of data from national databases are given in table 1.
Table 1. Dates for extraction of data from the national databases
|
Trait |
Denmark |
Finland |
Sweden |
|
Yield |
28.10.2009 |
25.10.2009 |
22.10.2009 |
|
Type, milk ability and temperament |
06.11.2009 |
25.10.2009 |
23.10.2009 |
|
Fertility |
28.10.2009 |
25.10.2009 |
23.10.2009 |
|
Udder health and other disease |
06.11.2009 |
25.10.2009 |
23.10.2009 |
|
Calving |
06.11.2009 |
25.10.2009 |
23.10.2009 |
|
Growth |
28.10.2009 |
25.10.2009 |
01.09.2009 |
News in relation to NAV genetic evaluation
Growth
We have corrected an error in the weights used in the calculation of the EBV for growth for Jersey. The Swedish growth data is the same as in the October run.
Other traits
No changes
Genetic base
EBVs for bulls and females are expressed on the same cow base. This genetic evaluation included cows born from 01.12.2004 to 01.12.2006 in the genetic base (average 100).
For functional traits, sire models are used and EBVs for cows are not estimated. For functional traits, the genetic base includes bulls, which are sires of present cows – see table 2.
Table 2. Definition of genetic base for cows and bulls
|
Trait |
Genetic base |
|
Yield, type, milk ability and temperament |
Cows born 01.12.2004 - 01.12.2006 |
|
Fertility, calving, mastitis resistance and
resistance against other diseases |
Bulls born 01.12.2000 - 01.12.2002 |
Publication of NTM
A bull gets an official NTM, when the bull has official EBVs for yield, type and mastitis.
NAV – frequency and timing of routine runs
NAV performs 6 evaluations per year for all traits. The NAV evaluations are timed in a way that NAV can deliver updated EBVs to all the international evaluations. In Table 3, the NAV and Interbull release dates are shown. Interbull change the timing of international evaluations in the autumn 2010. NAV will discuss changes in timing and frequencies during the winter 2009/10
Table 3. NAV and Interbull release dates in 2010. EBVs released at NAV dates in bold will be delivered to international genetic evaluation.
|
|
2010 |
|
Month |
NAV |
Interbull |
|
January |
12 |
12 |
|
February |
|
|
|
March |
15 |
|
|
April |
|
6 |
|
May |
17 |
|
|
June |
|
|
|
July |
|
|
|
August |
17 |
17 |
|
September |
|
|
|
October |
15 |
|
|
November |
|
|
|
December |
7 |
7 |
You can get more information about the joint Nordic evaluation:
General about Nordic Cattle Genetic Evaluation: www.nordicebv.info
Contact person: Gert Pedersen Aamand, Ph.: +45 87405288 gap@landscentret.dk,
Denmark: www.landscentret.dk/nav
Contact person: Ulrik Sander Nielsen, Danish Cattle, Ph. +45 87405289, usn@landscentret.dk
Sweden: www.svenskmjolk.se
Contact person: Jan-Åke Eriksson, Swedish Dairy Association, Ph. +46 08-790 58 67
jan-ake.eriksson@svenskmjolk.se
Finland: www.faba.fi
Contact person: Jukka Pösö, Faba Service, Ph +358-(0)207472071 jukka.poso@faba.fi