NEW CODES FOR GENETIC RECESSIVES
The World Holstein Friesian Federation (WHFF) has reviewed the
recording of genetic recessives prevalent in the Holstein breed today
with a view of harmonization and exchange.
Since there is an increasing concentration of breeding within blood-
lines and widespread use of a limited number of sires, it is fundamental
to the advancement of the breed that all available information, both
desirable and undesirable, be made known to breeders, to potential
purchasers of animals or to purchasers of artificial service from sires.
2009 NATIONAL
It is to be expected that due to improved data collection and progress
HOLSTEIN SHOW DVD
in genetic investigation of traits, an increasing number of genetic reces-
sives will be detected and/or published.
If you weren’t able to make it to
Harmonization of codes and nomenclature is imperative for overall
the show, you might like to see
accuracy, assignment and a perquisite for electronic data exchange.
what happened on the official DVD made by
With each breed association maintaining its own file instead of having
Steve Dennie of IA Service. The price is the same one central master file, the exchange process as proposed is viewed as
as two years ago - £10 including VAT and UK post- more practical and less vulnerable to misinterpretation or error.
age – and also includes footage of the Centenary
Master list of WHFF-approved recessives
Elite Sale.
It is imperative that Holstein UK adopt these new codes as each par-
To order a copy, log on to http://www.iaservice.
ticipating herd book is expected to comply with the WHFF gene codes
co.uk/shop.php or telephone Yvonne on
and expressions for the purposes of international data exchange of
01782 791441.
recessives.
The gene and corresponding expression codes have been modified and
expanded in keeping with WHFF General Assembly 2004’s encourage-
ment of a coding system for exchange that was simple, expandable and

easy to use, interpret and understand.
Expression Code: F = tested and non-carrier, C = carrier
MAY 2009
Name of gene Description Gene Gene and Expression codes
13-15 Balmoral Show, Belfast
Code
JUNE 2009
BLAD Bovine Leucocyte BL BLC = Tested Carrier of
Adhesion Deficiency BLAD
17-28 German National Holstein
BLF= Tested non-carrier of
BLAD
Show, Oldenburg, DE MULEFOOT Mule-Foot MF MFC = Tested Carrier of
Mulefoot

EVENTS
24 British Friesian Breeders Club
MFF = Tested non-carrier
of Mulefoot
Centenary Celebration, Cheltenham
DUMPS Deficiency of Uridine DP DPC = Carrier of Dumps
25-28 Royal Highland Show,
Monophosphate DPF = Tested non-carrier
Synthase of Dumps
Ingleston
CVM Complex Vertebral CV CVC = Tested Carrier of
JULY 2009
Malformation CVM
CVF = Tested non-carrier
AR OF
2-4 Danish National Show, Herning, DK
of CVM
FACTOR XI Factor XI XI XIC = Tested Carrier of
7-10 Royal Show, Stoneleigh
FACTOR XI
XIF = Tested non-carrier of
14-16 Great Yorkshire Show
FACTOR XI
AUGUST 2009 CITRULLINAEMIA Citrullinaemia CN CNC = Tested Carrier of
Citruillinaemia
24-30 Expo Quebec, Quebec, CA CNF = Tested non-carrier
of citruillinaemia
SEPTEMBER 2009
6-8 Centenary Celebration, Chester
Additional or new recessives/traits not currently provided for on the
CALEND
master list or pending approval by WHFF Council should not be expres-
15-18 Space Show, Rennes, FR
sion coded nor exchanged prior to the recognition/consensus of WHFF
16-17 Dairy Event & Livestock Show,
Council. This includes Brachyspina, which has not been approved by the
WHFF Council and as such, will not be used by Holstein UK at this time
Stoneleigh until the Council approve the use.
This change was introduced for all newly registered animals from 1
29-3 Oct World Dairy Expo,
April 2009. A link to the full WHFF document, outlining these changes,
Madison, US
can be found on the Holstein UK website under the ‘Animal Info’
section.
2 THE JOURNAL APRIL 2009
e2-09 From HUK.indd 2 03/04/2009 09:44:59
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