Since 2009, the HornPolled-test has been available in Europe. This test was based on a HornPolled-test which was developed in the USA. In 2012, European geneticists have described the genetic test for HornPolled in much more detail. Scientific literature now describes two mutations that both cause the Polledness in cattle. Consequently, the genetic test for HornPolled is herewith almost completely finished.
These two variants are indicated as follows:
- Polledness Pc, this represents a mutation of Celtic origin.
- Polledness Pf, this represents a mutation of Friesian origin.
Test specific information
The genetic factor is continuously present, and will always be visible.
The Turnaround Time (TAT) depends on various factors, such as the shipment time of your sample to the test location, the test method(s) and whether the tests are performed completely or partially by a Partner Lab or Patent owner.
The TAT of tests performed at our facilities is normally 10 working days after receipt of the sample at the testing laboratory (VHL, VHP or Certagen). For tests performed by a Partner Laboratory (so-called "partner lab test") or patent owner, the TAT is at least 20 working days after receipt of your sample. Because the shipment time to our Partner Labs or patent owner may vary due to factors we cannot influence, the mentioned 20 working days are therefore an estimate.
Sometimes it is necessary to re-run your sample. We call this a retest. In that case, the TAT will of course be extended.
Location of disease or trait
This genetic factor is linked to the presence of horns in cattle.
For this test samples from all breeds are accepted.
For this DNA test we accept the following materials: Hair, Semen, Blood EDTA, Blood Heparin, Tissue. Please contact Dr. Van Haeringen Laboratorium if you wish to submit other material as listed.
An animal can be free and has in that situation two healthy alleles. When used in breeding this animal will be horned. It cannot spread the polled mutation in the population.
An animal can be carrier and has in that situation one horned and one polled allele. When used in breeding 50 percent of the offspring will receive the polled allele. Carriers are also polled.
An animal can be affected and has in that situation two polled alleles. When used in breeding all offspring will also receive the polled allele. These animals are also polled.
This genetic factor is inherited in an autosomal, dominant, mode. This means, that the individual can be free of the mutation (homozygote normal), affected (homozygous affected) or carrier (heterozygous affected). Both carriers and affected individuals will show symptoms of the mutation.
Severity of Disease
Genetic characteristics are not a disease.