Maedi-Visna Virus (also known as Visna-Maedi Virus, Ovine lentivirus and Ovine Progressive Pneumonia) is an infectious disease that can cause both chronic pneumonia and encephalitis in sheep and goats. The virus has a long incubation time and high mortality rate, and no effective vaccine or treatment against it currently exists. However, some sheep have been found to have genetic resistance against the disease, which can dramatically improve survival rates. The test offered here is for a variant of the gene TMEM154. Sheep homozygous for this variant, which can found among all breeds, have been demonstrated to be less susceptible to infection.
Test specific information
Resistance to Maedi-Visna Virus.
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
For this test samples from all breeds are accepted.
For this DNA test we accept the following materials: Blood EDTA, Blood Heparin, Genotek Swab. Please contact Dr. Van Haeringen Laboratorium if you wish to submit other material as listed.
Severity of Disease