DNA sexing is nowaday the best method to determine the sex of the birds. Therefore, Genimal Biotechnologies gives the opportunity to bird breeder to determine the sex of their birds with accuracy and short delay.
We can do DNA sexing on all bird species. However we cannot sexed ratites (Ostrich, Rhea, Emu) and some glossy starling.
Order a pack of DNA sexing now and then send your samples at different times within the limit of 2 years. For example, you can send 2 samples tomorrow, 3 other in two months etc.
As in humans and most animals, the sex of birds is determined by two chromosomes called “sex chromosomes”. In birds, males have two identical sex chromosomes named ZZ. However, in females, these two chromosomes are different and named ZW. Indeed, the Z chromosome is therefore present in both sexes while the W chromosome is only present in females. The method of DNA sexing realized at the laboratory Genimal Biotechnologies consists of detecting a particular gene that, although found on both chromosomes, is smaller in size on the W chromosome than on the Z.
DNA findes i kønskromosomer er isoleret fra det sample cells (feather cells, blood cells, etc.).
Et stykke DNA anvendes til DNA kønsbestemmelse er ganget millioner af gange for at det kan påvises.
Påvisning af gen
DNA is now detectable with a specific machine because it is present in billions of copy. In females (ZW), two bands of DNA are observed. The first band corresponds to versionen af den store gen på Z-kromosom og den anden band svarer til the version of the small gene on the W chromosome. In males (ZZ), only one band is observed because both chromosomes are on the same size (Z).
- Tørre blod på papiret
Eksempel på certifikat for testen: DNA kønsbestemmelse
Klik på eksempel certifikatet nedenfor for at åbne det.
- DNA sexing article in Wikipedia. Read the article
- A DNA test to sex most birds. Griffiths R, Double MC, Orr K, Dawson RJ. Mol Ecol. 1998 Aug;7(8):1071-5. Read the article
- A simple and universal method for molecular sexing of non-ratite birds. Fridolfsson, AK, Ellegren, H. J Avian Biol 1999;30:116–121. Read the article
- Sex identification in birds using two CHD genes. Griffiths, R. Proc Biol Sci 1996;263:1251–1256. Read the article