Sabino Overo
As Sabino Horse or just as Sabino refers to horses with a typical Scheckungsmuster .
Appearance
Horses that are genetically Sabinos usually have a very wide blaze or other large markings on their faces. The other Sabino characteristics do not appear on every Sabino. Gene carriers do not have to have any noticeable markings themselves. Often the only thing that catches the eye is stylus hairiness or even only a few white hairs at the base of the tail. In the next generation, if the gene has been passed on, a conspicuous mark may be visible again.
Additional Sabino features, which are not found in all Sabinos:
- White spots on the chin, lower or upper lip, up to completely white lips or a flour mouth. If the white expands further here, a lantern can arise that is expanded below. It can look exactly like the Splashed White Overo
- White badges on the legs. They usually reach at least to the knees and ankles. They often end in a point or sometimes dissolve into small white dots.
- Lots of small, round white spots on the belly, which usually converge to larger spots and then form a larger, frayed-looking spot
- White spots on the throat or on the gaiters (jaws)
- White burin hair, especially on the borders of white spots ("shaded" markings) and in the lower abdomen, often all over the body. The tail roof and mane are also particularly affected. Sometimes Sabino foxes can be confused with foxes with flaxes . Sometimes they look almost like spiked-haired horses , except that the head and legs are not darker than the body, but have just as many spiked hairs and also have strongly pronounced white markings.
In the homozygous form the horses are almost completely white and only the middle of the back and around the ears can still be seen color.
Swell:
genetics
There is a genetic test for Sabino that proves that the inheritance is intermediate. There are a number of different Sabino genes, most of which are not yet known, as there are piebald horses (e.g. Arabs, warm-blooded animals) that are phenotypically Sabinos but do not respond to the test. A sabinogen has so far been clearly identified. It's called Sabino 1 and is on the kit locus. So it is a form of leucism . The inheritance is intermediate. Heterozygous animals have the typical Sabino markings. Homozygous animals are almost white.
health
Some sabinos are deaf.
Races
Sabinos come in many breeds, including Paint Horses , Tennessee Walking Horse, and Thoroughbreds. If piebald foals are born in breeds in which this is not desired, it is often Sabinos.
Clydesdales are usually Sabinos, in whom the gene is expressed by pronounced markings on the face and legs. Even at Shires you can see a typical Sabino check again and again.
In the Clydesdale breed, large white markings on the face and legs are desirable, but no white spots on the body and no white burin hair. By mating horses with four white legs with horses with one dark leg, it is usually possible to achieve that the resulting foals meet this breeding goal.
See also
Web links
swell
- ↑ a b English: Morgancolors: Sabino
- ↑ a b c American Paint Horse Association's Guide to Coat Color Genetics; Status 12/2006; http://www.apha.com/
- ↑ a b Mustangs 4 us: SABINO is part of the OVERO Paint / Pinto complex, but it is not always expressed as a "pinto" pattern. ( Memento of the original from September 29, 2007 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ a b c American Paint Horse Association: Genetic Equation, Sabino spotting ( Memento from June 16, 2012 in the Internet Archive )
- ↑ a b SA Brooks, E. Bailey: Exon skipping in the KIT gene causes a Sabino spotting pattern in horses. In: Mamm Genome. 16 (11), 2005 Nov, pp. 893-902. PMID 16284805
- ↑ a b Samantha Ann Brooks: STUDIES OF GENETIC VARIATION AT THE KIT LOCUS AND WHITE SPOTTING PATTERNS IN THE HORSE. Dissertation . University of Kentucky, 2007.
