F-KER (Feather keratin gene)
About F-KER
A recently discovered quality indicator is a variation in the feather keratin gene (F-KER). This specific mutation in the keratin gene results in a change of the amino acid cysteine to glycine at the 83rd position of the protein (Cys83Gly). In this case, this genetic change or mutation (FKER(G) allele) leads to an abnormality in the keratin protein and is associated with reduced performance in racing pigeons during long-distance flights. Remarkably, the F-KER(TT) version, the original type or wild type, is much more common in pigeons that excel in long-distance flights (over 500 km) than the F-KER(GG) variant.
The fact that some prominent pigeons have the G allele, even though it generally has a negative effect on performance, shows that relying on only this genetic indicator is not enough to breed an excellent pigeon. At the same time, it suggests that there is still room for genetic optimisation using genetic markers, especially in the very best pigeons.
Suitable samples
Feathers
- One set of 4-5 freshly plucked breast feathers or 2-3 tail or wing feathers
- Fallen moulting feathers, down feathers and blood feathers should be avoided. These sometimes contain insufficient DNA or can cause damage to the feather follicle when pulled out.
- Blood feathers are the new feathers that can be recognised by the blue sleeve at the base of the plume.
- To avoid contamination, the shaft (the end of the feather that comes out of the bird's skin) must not be touched with the hands
Blood sample
- Small amounts (capillary tube) are sufficient for accurate analysis
Cheek swab of a nestling
- A gentle way to collect DNA from young birds
- Caution: avoid mixing with food or food waste
Results
- Processing time 2-3 working days
- You will receive an email when your results and certificate are available on your personal portal