Equine color genetics, fourth edition presents a detailed examination of the color variation in horses and donkeys and the genetic mechanisms that produce. Lesson 1 equine coat color genetics horse courses online. Black is the recessive coat color, meaning it is always homozygous and expressed as eaa. Joseph camp, parasitologist, purdue department of comparative pathobiology and stacy h. Each body cell contains a certain number of pairs of chromos omes eg. By nikki kisling, dvm student class of 20 edited by drs. The american paint horse association has some great information on their website in the form of pdf files and can provide you with some great brochure information as well. Heres a quick outline of a horse s basic color genetics. Home pdf files study material articles videos images links contact educational. For gray sire or dams, you must enter what the color of the horse was before it went gray, as well as check the box labeled gray to the right of your color selection. The basic coat color of a horse is determined by the following genes. I remember learning about dna for the first time in college. Color atlas of veterinary anatomy volume 2 the horse, 2nd edition. To determine the possible offspring colors that the gray horse can produce.
This will enable you to view, print and save the article in an acceptable layout. A guide to equine color genetics and coat color expert how. Chestnut consists of a red or brownish coat, with a mane and tail the same or lighter in color than the coat. Genotyping of coat color genes mc1r, asip, pmel17 and matp. Apr 14, 2003 equine color genetics 2e is a complete discussion of horse and donkey colors, including details of their genetic control and their identification. Offering information on how to tailor breeding programs to maximize desired color outcomes, the text bridges the gap between the scientific and lay communities without. This list is not meant to be comprehensive nor meant as an endorsement of any of the labs listed. Pdf, as well as being available as a regular web page.
Aqha anatomy aqha ai fact sheet aqha colors and markings aqha color coat genetics aqha hypp brochure arthropod pests of equines deworming in horses digestive system of a horse eia in arkansas horse conformation analysis horse health, diseases, and. Horse cannot have red foals regardless of the color of mate. Perhaps it is because of our human preferences that coat color genetics is one of the few areas of equine genetics that scientists have been able to develop sophisticated theories on how specific genes determine the. Sometimes a horse can carry a spotting pattern gene, but not express it in a way thats consistent with how we think that gene should look phenotypically. Equine color genetics has been created with the express purpose of giving all equestrians a place to receive and share their knowledge about equine color genetics. Equine coat color genetics determine a horse s coat color. Your horses ability to reproduce these pigments is an inherited trait. Uneven distribution of genotypes between the investigated groups was observed. Horses that are homozygous for cream cremello, perlino, and smoky cream or are cream and champagne are occasionally seen with green or greenishblue eyes. The understanding of many genetic mechanisms at work in horses and donkeys has greatly increased since the third edition. Vetgen currently offers dna testing for black, chestnut, cream dilution and silver dilution.
Studies, deb bennett, phd horse color articles by lesli kathman recommended books. However, minimal expression of sabino genetics may be indicated by as little as a small body spot, a jagged leg marking, or a white facial marking extending onto the lower lip. Introduction to horse color genetics while the old saying is true that a good horse is never a bad color, the colors of horses have been important to human beings as far back as when prehistoric people painted polka. To view our other free printable forms and other topics in the record keeping category, visit the record keeping archive page where you can find all kinds of horse forms. Equine colors and genetics this slideshow covers basic equine colors and genetics with information and graphics. An understandingofthismechanism allowsbreederstopredictthecoat colorsoffoalsbasedupontheir. The genetics of horse colours and feeding for a healthy.
Equine color genetics, 4th edition request pdf researchgate. Following are seven diseases for which researchers are working to understand the genetics involved. Phillip sponenberg, rebecca bellone may 2017 equine color genetics, fourth edition presents a detailed examination of the color variation in horses. Introduction to horse color genetics while the old saying is true that a good horse is never a bad color, the colors of horses have been important to human beings as far back as when prehistoric people painted polkadotted horses on their cave walls. All other equine coat colors and patterns stem from these base coat colors.
Horse coat color uc davis veterinary genetics laboratory. Equine color genetics, third edition, presents the most recent advances in color genetics for breeders of horses, donkeys, and mules. This passion for color genetics has allowed her to identify the genetic cause for leopard complex spotting and the associated disorder congenital stationary night blindness csnb. Equine coat color genetics determine a horses coat color. The dominant g causes the horse to turn grey, and the recessive g has no effect, causing the horse to be notgrey. This chart is kept very simple and helps you to identify your horses color even if you see yourself confronted with genetics for the first time. Differences at the agouti gene determine whether a horse is bay or black, and a change to the extension gene can make a. The only mutation in horses that reliably produces a brindle coat color is now known to be associated with skin and other health problems and to be lethal in male foals. Coat color inheritance chart veterinary genetic services. Color testing labsthe following labs provide dna color testing.
Simply put, black and red are the two basic equine color pigments. Flashy white stockings on delicate legs, pretty white faces, pale manes and tails bobbing in the breeze, rich orange coats gleaming in the dappled autumn sunlight. The creme gene works in an additive effect, making a horse carrying two copies of the gene more. Breeding values were estimated for all horses in the pedigree file. As a first year member in this equine reproduction and genetics project the following books will be necessary to complete the project and will then be used for all of the levels listed above. Polysaccharide storage myopathy pssm causes tyingup in quarter horses, paints, and appaloosas. A paint horse owners guide to demystifying the genetics. For example, if your results show that your dogs genotype is a type bbee, your dog is cream, white, apricot or red and has a black nose, the dog is carrying the hidden genes for black and brown. Extension and agouti are particularly wellknown genes with dramatic effects. This chart is kept very simple and helps you to identify your horse s color even if you see yourself confronted with genetics for the first time. Careful application of genetics to coat color definition can gloss over any inconsistencies due to regional or breed definition, age or season. Table 1 systems of nomenclature developed to explain the genetics of coat colour in sheepusing just the systems used to explain the difference between dominant black and brown tan in the karakul as examples different systems symbols and genes comments russian system ddblack the russian system was based on the work of vasin 1928. A good horse is a good horse regardless of his color.
Basic color is black, bay or brown in the absence of other modifying genes. There are quite a few more colors than the ones shown in this coat color chart. Most sabino horses are registered by their solid base coat color with their sabino traits recorded as white markings. The book provides valuable information that enables breeders to tailor their breeding programs to maximize desired color outcomes and minimize undesired color. Many colors are possible, but all variations are produced by changes in only a few genes. Introduction to horse color genetics it is fairly common to hear comments in the horse industry like why should you care about colors.
With simple dominants, it does not matter whether the horse has one copy of the dominant allele is heterozygous. Equine color testing form equine dna import permit 20202021 equine. Heres a quick outline of a horses basic color genetics. Oct 04, 2017 weve also given you a broad example of sire and dam color, in the form of a sample genetic recipe, that could produce such offspring. A guide to equine color genetics and coat color expert. For every color there is a group of people who feel that their color is the most beautiful expression of the body of the horse. Some retain color only on the ears and others are white all over. Horse ancestry animal genetics laboratory juras lab. Selected breeds are more probable to be the ancestors of current horses in north america and it would be unreasonable for us to use rare or endangered breeds like waler australia, timor pony timor island, cheju horse a southern island of korea, namib horse africa, tushuri horse georgia or pindos greece and etc. Basic color is sorrel or chestnut in the absence of other modifying genes. Red factor extension, agouti, appaloosa spotting, appaloosa pattern1, camarillo white, cream dilution, dominant white, dun zygosity, pearl dilution, champagne dilution, silver dilution, gray, sabino 1, splashed white, tobiano, and lethal white overo. Details the genetic basis of the colors built from the basic coat color, including dilutions and white patterning.
Chromosomes are paired threadlike structures which carry the genes. Coat color genetics elizabeth share, lorain county 4h educator masa williams, state extension associate. For more information on color genetics, see genetics 101, below. A simple presentation on the genetics of horse coat color. Equine coat color vetgen veterinary genetic services. Horse coat color guide with pictures bay horse color genetics.
We stopped, as we often do, to watch the foals tripping skittishly after the little welsh pony mares. Some of the articles are downloadable in adobe acrobat format. Several genes have been indicated as putative to coat color modification, altering the basic. In the future, diagnostic tests may be available for all the major coat color genes. Yes, scientifically color has nothing to do with the heart of a race horse or whether a horse can cow, jump fences, run barrels or do any other specific job. Equine coat colors and genetics painted bar stables. Animal genetics provides genetic testing services for animals including avian dna sexing and diseases and inherited canine and equine characteristics and disorders. One of the whiter ranges of expression includes color on the ears, chest and tail base. Genetics inside the cells of all animals are found chromosomes and genes.
Equine coat colors and genetics by erika eckstrom creme genetics the cream gene is an incomplete dominant. References for equine color genetics information websites. Equine color genetics, fourth edition presents a detailed examination of the color variation in horses and donkeys and the genetic mechanisms that produce color variations thoroughly covers the basic colors in horses, including bay, chestnut, black, and brown. Genetic analysis of white facial and leg markings in the swiss. The gray gene causes the progressive loss of pigment throughout the horses coat and will affect any color horse. The color atlas of veterinary anatomy volume 2 presents a unique photographic record of dissections showing the topographical anatomy of the horse. Apr 15 2020 horse genetics pdf drive search and download pdf files for free. They are most commonly found in pearl or cream and pearl horses but even then are uncommon. But i also wanted to work on horses and that dna stuff didnt seem relevant to horses. Providing the horse with plenty of roughage and a balanced diet along with an effective parasite control regime, sufficient exercise, and grooming is imperative when striving for a healthy coat. Bay is the dominant phenotype the physical expression of a genetic trait between the two, and its genotype is expressed by either eaa or eaa. Pdf files study material articles videos images links contact interactive quizzes. Equine reproduction and genetics project book 4h 185.
Equine color genetics, 4th edition books pics download. Equine color genetics and deoxyribonucleic acid testing. Quantitative aspects of coat color in old kladruber black horses. Jun 20, 2018 equine color genetics 4th edition pdf. These are the medicine hat paints that were prized 2 apha coat color genetics guide frame overo splashed white sabino 07coatcolorgenetics 121407 6. This breeding by color may have brought together some of the recessive genes, eventually resulting in different colored horses. While breeding thosecolored parents wont necessarily guarantee youll get your chosen color, theyll help you to hedge your bets. Offering information on how to tailor breeding programs to maximize desired color outcomes, the text bridges the gap between the scientific and lay communities without ignoring the intricate. For a gray sire or dam, you must enter what color the horse was before. Equine color genetics, fourth edition presents a detailed examination of the color variation in horses and donkeys and the genetic mechanisms that produce color variations.
Color atlas of veterinary anatomy volume 2 the horse, 2nd. Beginners guide to horse genetics it was a crisp but serene morning in early autumn. The brindle color pattern does not often occur in horses. The book explains how to accurately identify horses and donkeys by using colors. Aqha color coat genetics aqha hypp brochure arthropod pests of equines deworming in horses digestive system of a horse eia in arkansas horse conformation analysis horse health, diseases, and vaccinations internal parasites of the horse managing fescue for horses master horseman project manual reproductive physiology and anatomy of the mare. Ernie bailey coordinator, horse genome project professor, mh gluck equine research center, university of kentucky. The genetics of horse colours and feeding for a healthy coat horse journals. In order to define the color of a horse in a systematic way, one must learn to assign genetic symbols to the horse to be identified. Horse genetics book horse genetics when people should go to the ebook stores, search introduction by shop, shelf by shelf, it is in point of fact problematic.
All other known brindles in horses are the result of chimerism or other mechanisms that do not reliably reproduce. The first two genes, w and g are dominant need only one copy to produce the white or gray color. Equine color genetics, fourth edition presents a detailed examination of the color variation in horses. Details the genetic basis of the colors built from the basic coat color, including dilutions and white. Currently, genetic tests for specific mutations are available for. Equine color genetics, 4th edition wiley online books. As more research is done on coat color and coat pattern genetics, i am sure things will get much more complicated. Equine coat color calculator this calculator will give you the possible offspring coat colors and their probabilities when given the parents coat color and pattern information. Researchers at the veterinary genetics laboratory and other institutions are working towards the identification of the specific genes and mutations responsible for coat color traits in the horse. Each section is explained in depth in the stepbystep guide, but you can skip ahead to any particular section by clicking on it below. Coat color genetics international museum of the horse.
Chestnut is one of the most common horse coat colors, seen in almost every breed. Even though the horse is gray, it still has all the genetics of the color it was before going gray. A paint horse owners guide to demystifying the genetics of spotting. Papers that are open access are noted, those links direct to pdf files. Horse shows a diluted body color to pinkishred, yellowred, yellow or mouse gray. This is the fourth edition of a guide to equine color identi. Pdf epub a dog lovers guide to canine massage full pdf. Coat color chart this coat color chart is for people who are not yet familiar with all those colors a horse can have. Agouti gene, which restricts the black to the mane, tail and legs. Rebecca became interested in the genetics of coat color in horses during an undergraduate course at the university of florida.