Genetics

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Early Embryonic Loss and Genetics

April 22, 2009

Chromosomes are large segments of DNA wound around special proteins within each cell's nucleus. They contain nearly all of the body's genetic material. Horses have 64 chromosomes (or 32 pairs) including the two sex chromosomes (XY in males and X... Read More

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Big Horse? Small Horse? Help Scientists Study Size Genes

April 02, 2009

What makes your horse different from the horse in the next stall? Why doesn't a Kentucky Derby contender walk like a Budweiser Clydesdale? Why don't either of them look like Read More

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Polysaccharide Storage Myopathy (PSSM): A Genetic Diagnosis, AAEP 2008

March 13, 2009

Polysaccharide storage myopathy (PSSM) is a metabolic muscle problem found in at least 20 breeds, including Quarter Horses, Paints, Appaloosas, and drafts. An affected horse suffers bouts of exertional rhabdomyolysis (tying-up), muscle tremors... Read More

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DNA Testing for Twins (AAEP 2008)

March 03, 2009

Tissues from both the recipient and donor mare, as well as from the two stillborn foals, were submitted for microsatellite analysis. The analysis verified that the foals had identical genotypes and resulted from the transferred embryo.... Read More

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Lavender Foal Study Needs Participants

March 02, 2009

Researchers at Cornell University announced plans to conduct a new study focused on Lavender Foal Syndrome/Coat Color Dilution Lethal (LFS/CCDL). The project, led by Samantha Brooks, PhD, and in collaboration with Doug Antczak, VMD, PhD, and Don... Read More

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Arabian Horse Association Establishes Task Force On Genetic Diseases

February 28, 2009

The Arabian Horse Association (AHA) of Aurora, Colo., has established an Arabian Horse Association task force on genetic diseases. The task force was created under the direction of and announced by AHA President Lance Walters.

"The... Read More

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Equine Researchers Close to Identifying Genetic Mutations

February 12, 2009

The international Equine Consortium for Genetic Research (ECGR), established by Morris Animal Foundation (MAF), is making major inroads into determining the locations of genes that cause specific disease traits in horses. The ECGR is a worldwide... Read More

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AQHA Welfare Group Releases Plans for Racing, Breeding, Shows

January 19, 2009

The American Quarter Horse Association's Executive Committee has approved recommendations from the Animal Welfare Assurance Task Force, and the association is moving forward to implement the suggestions.

The association's main objectives ar... Read More

Article

$60,000 White Colt Will Be Resold

January 17, 2009

Florida-based pinhooker Christy Whitman bought what she thought was a unique yearling during the fifth session of the Keeneland January horses of all ages auction, and she's hoping that shoppers at a future sale will be attracted by his white... Read More

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Dam Wins Battle of the Sexes to Protect Foal

December 29, 2008

After witnessing a rare (and unsuccessful) infanticide attack by a stallion on a one-hour-old foal, behavior researcher Meeghan Gray, PhD, from the University of Nevada, Reno, reported findings from the macabre event.

"In this first report... Read More

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Test Reveals Arabian Sire as Carrier of Neurologic Disorder

December 15, 2008

An Arabian horse breeding operation announced a stallion is a carrier of cerebellar abiotrophy. ... Read More

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Equine Guelph Offers Genetics Course

November 25, 2008

Equine Guelph is offering a new online course in equine genetics. The 12-week course will provide the tools, techniques, and knowledge necessary to develop an understanding of the important role that genetics plays in the equine industry.... Read More

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Scamper Clone Offered for Commercial Breeding

November 15, 2008

A carbon copy of one of the world's most successful barrel horses has become the first clone to be offered at stud in the United States.

"Clayton" is the clone of the AQHA gelding Gills Bay Boy, or Scamper, as he is better known. Scamper an... Read More

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Silver Dapple Color and Eye Abnormalities Connection Found

November 13, 2008

For many years, veterinarians and horse owners have described the collection of eye anomalies associated with silver dapple color as anterior segment dysgenesis (ASD), because of the apparent similarities to anterior segment lesions ... Read More

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Equine Genome Horse Course Available for Viewing

October 09, 2008

The latest Horse Course from the University's of Kentucky's Livestock Disease Diagnostic Center and Gluck Equine Research Center and presented by Fort Dodge Animal Health is now available for viewin... Read More

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Polysaccharide Storage Myopathy (PSSM): Search for Underlying Causes Continues

October 06, 2008

Despite having recently identified a genetic defect that results in polysaccharide storage myopathy (PSSM) in many horses, the underlying cause of PSSM remains to be determined in others.... Read More

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Genetics of Contracted Foal Syndrome

October 05, 2008

When a foal is born with limb contractures preventing it from standing or walking normally, it is said to have contractures, or contracted foal syndrome (CFS). ... Read More

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Test Allows Arabian Breeders to Scan for Inherited Neurologic Disorder

September 23, 2008

Equine cerebellar abiotrophy is a debilitating neurologic disorder that affects Arabian horses.... Read More

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Genetic Mutation for Polysaccharide Storage Myopathy Widespread

September 20, 2008

Veterinary researchers from the University of Minnesota have identified a gene potentially responsible for polysaccharide storage myopathy (PSSM) in Quarter Horses and, in doing so, they uncovered a number of research leads to pursue. In a... Read More

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Clone of Show Jumper Gem Twist Born

September 16, 2008

A clone of champion show jumper Gem Twist is the newest addition to the stable of horses cloned by Cryozootech, a French company that banks equine genetic material. The company announced the clone's birth Sept. 15.

Gem Twist, a grey... Read More

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Shedding Light on Night Blindness in Appaloosas

August 31, 2008

Congenital stationary night blindness (CSNB) in Appaloosas has been linked to the leopard complex spotting in these horses. But how are these two apparently independent genetic... Read More

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AAEP's Walking Horse Directives Labeled Costly, Unrealistic

August 09, 2008

The American Association of Equine Practitioners' (AAEP) Tennessee Walking Horse Task (TWH) Force recommendations to eradicate the practice of soring drew strong reaction from Walking Horse industry members who label the directives costly and... Read More

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Focus on Equine Genetics: the Ol' Gray Mare

August 08, 2008

For more than 100 years, equine researchers have been examining why gray horses that are losing hair pigmentation are often concurrently affected by melanomas—tumors characterized by a massive production of the pigment melanin.

According... Read More

Article

Special Report: Racehorse Durability

July 24, 2008

In this exclusive report, The Blood-Horse investigates whether the Thoroughbred racehorse is as tough today as it was 30 to 40 years ago. Editors of The Blood-Horse recently sought the answer to this question by producing a... Read More

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AQHA Donates $50,000 to Genetic Research Fund

July 09, 2008

The American Quarter Horse Foundation recently donated $50,000 to Morris Animal Foundation (MAF) to advance equine health through MAF's Equine Consortium for Genetic Research (ECGR) project. The consortium includes 18 equine research institutes... Read More