NEWS UPDATE
WHFF Standardise Labelling of Genetic Trait Coding 2016
Discovery of the Genetic Cause of Calf Mortality
Haplotypes Extract from Holstein Journal 2011
Haplotypes Impacting Fertility Tom Lawlor
Brachyspina Testing Procedures.
Brachyspina Testing Information
Extract from Holstein USA March 2011 Press Release
Genetic Recessives_Harmonisation.pdf
Genetic Traits and Carrier Codes Recognised by World Holstein-Friesian Federation
C = carrier F = tested free or non-carrier
The Use of WHFF Direct Test Codes for Coat Colour is detailed here
| Gene Name | Description | Gene and Expression Code |
| BLAD | Bovine Leukocyte Adhesion Deficiency (deficiency of a normally occurring protein needed for white blood cells or leukocytes, which are body’s infection fighters) | BLC = tested carrier of BLAD BLF = tested non-carrier of BLAD |
| Mule foot | Mule-Foot (toes of foot are joined, giving animal a single hoof, instead of cloven ones) | MFC = tested carrier of Mule foot MFF = tested non-carrier of Mule foot |
| DUMPS | Deficiency of Uridine Monophosphate Synthase (one of many enzymes contributing to normal metabolic processes) | DPC = tested carrier of DUMPS DPF = tested non-carrier of DUMPS |
| CVM | Complex Vertebral Malformation (causes still-born calves, abortions, and early embryonic losses) | CVC = tested carrier of CVM CVF = tested non-carrier of CVM |
| Factor X1 | Factor X1 (blood clotting disorder) | XIC = tested carrier of Factor X1 XIF = tested non-carrier of Factor X1 |
| CIT | Citrullinemia (accumulation of ammonia and other toxics in blood in baby calves) | CNC = tested carrier of Citrullinemia CNF = tested non-carrier of Citrullinemia |
| Brachyspina | Brachyspina (causes abortion and stillborn, shortened spinal cord, long legs and abnormal organs) | BYC = tested carrier of Brachyspina BYF – tested non-carrier of Brachyspina |
| Polled | Animals without horns | PO = code POS = tested true polled (homozygous PP) POC = tested carrier of polled (heterozygous Pp) POF = tested free of polled |
| Cholesterol Deficiency | Cholesterol Deficiency | CDF = tested non-carrier / free of cholestrol deficiency CDC = tested carrier of cholestrol deficiency (heterozygous) CDS = tested true carrier of cholestrol deficiency (homozygous) |