Sv: Przewalski eller fjording?!
Här har du massa information om Przewalskhästen!
http://www.treemail.nl/takh/
Hoppas det hjälper dig en del.
Lite frågor du kanske inte hittar på hemsidan, som jag ställde när jag själv studerade rasen:
1) Do they have more then 3 gates?
2) I did read that a Przewalski has 66 chromosomes while a "regular" horse has 64. And that a offspring between a Przewalski and a regulare horse get 65 chromosomes.
If this offspring is breeded with a regulare horse, their offspring will get 64, but how many chromosomes will the offspring get if an horse 50% Przewalski 50 % regulare horse is breeded with an Przewalski?
3) Since the Przewalski has 2 more chromosomes, does this mean that they are not an regulare horsebreed? And are to the horses as the zebras for example. A close relative?
Or is the Przewalski counted as an horsebreed?
Deras svar:
1. Yes they do. They sometimes show the ‘tölt’
2. First generation hybrids between Przewalski horses are always identifiable by their chromosome number of 65. After back crossing a hybrid with a pure Przewalski the chance of having 65 chromosomes is 0.5. In the next generations this chance is reduced to 0.25, 0.125, 0.0625, etc.
3. The Przewalski horses are not a “man-bred-species”, but instead a genuine wildlife species, like the zebras are. The Przewalski horses are the only living remnants of the multitudes of wild horses that in prae-historic times roamed the vast plains or steppe, which stretched from France and Spain into Central Asia as far as the Sea of Japan. The rise of civilisation (city-building, agricultural activities etc) caused a diminishing of the wild horses’s living space: In the end the only safe haven were some barren patches of desert unfit for man to live. Through the above and excessive hunting the unique Przewalski horses diappeared from the wild. The last sighting of Przewalski horses in the wild was in the Gobi desert in 1968.
