Recent News for Genetic Problems

Article

Fatty Acid Triheptanoin Comes Up Short for Horses with PSSM

April 03, 2010

Triheptanoin does not appear to be a good fat supplement for polysaccharide storage myopathy (PSSM) horses.... Read More

Article

HERDA: Skin Characteristics

March 08, 2010

Horses with the hereditary skin disease known as hereditary equine regional dermal asthenia (HERDA) or hyperelastosis cutis (HC) have been recognized since the 1970s, but only recently have researchers defined just how much weaker their skin is... Read More

Article

Neonatal Isoerythrolysis: Foal Jaundice

January 06, 2010

Neonatal isoerythrolysis (NI) is caused by an incompatibility of blood types between a mare and her foal. If a foal inherits from its sire a red cell factor (antigen) that the mare lacks, the mare may develop antibodies to that antigen. There i... Read More

Article

Emerging Neurologic Syndromes Discussed at World Equine Vet Meeting

November 27, 2009

"The more we look for neurologic signs, the more we discover new syndromes," said I.G. Joe Mayhew, BVSc, FRCVS, PhD, Dipl ACVIM, ECVN, head of Equine Massey and professor of Equine Studies at Massey University in New Zealand, at the... Read More

Article

Genetic Diseases in Horses Reviewed for World Equine Vets

October 31, 2009

While genetic diseases exist in a number of horse breeds, many researchers have focused expressly on issues occurring in the Quarter Horse breed. Thanks to their efforts, genetic tests for several disorders specific to this breed are now... Read More

Article

Coat Color Studies Aid Health Research, Breeding Choices

September 21, 2009

Certain horse coat colors or patterns are associated with health or medical problems.... Read More

Article

Common Variable Immunodeficiency in Horses, ACVIM 2009

August 27, 2009

Common variable immunodeficiency is a rare, but serious disease in adult horses that often leads to hospitalization, said Maria Julia Bevilaqua Felippe Flaminio, DVM, MS, PhD, Dipl. ACVIM, who presented research on the topic at the American... Read More

Article

Equine Veterinary Group Releases Statement on Genetic Defects in Horses

August 04, 2009

This is the 2009 Statement on Genetic Defects released by the American Association of Equine Practitioners. It was approved in July 2009.
 
Congenital Defects

Congenital defects include all... Read More

Article

PSSM Genetic Mutation Reported in Some UK Horse Breeds

June 18, 2009

Collaborative efforts between researchers on both sides of the Atlantic have identified that a genetic mutation in enzyme glycogen synthase 1 (GYS1) is an important cause of polysaccharide storage myopathy (PSSM, a form of... Read More

Article

Effects of Hay Carbs on PSSM Horses Examined

June 08, 2009

The study group's objectives were to determine if there is a difference in blood glucose and insulin response to feeding hay types with varying water soluble sugar and starch (NSC) content between horses with PSSM and control horses.... Read More

Article

UK Incidence of Polysaccharide Storage Myopathy Reported

May 21, 2009

Not only is polysaccharide storage myopathy (PSSM) a common and important muscular disorder in various horse breeds in the United States, but according to a recent research report, it is also a common diagnosis in horses in the Unite... Read More

Article

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

Article

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

Article

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

Article

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

Article

A Better Way?

July 01, 2008

Breeders willing to risk disease or injury for the traits they desire are at the heart of the problems we face today.

We've had bad news following bad news lately with the loss of some of the top horses in equestrian... Read More

Article

Diagnosing Muscle Soreness

June 01, 2008

Last year my 18-year-old Quarter Horse mare became very sensitive to touch on her back and hindquarters. ... Read More

Article

Muscle Disorders in Warmbloods Easily Diagnosed through Biopsy

April 16, 2008

Owners of Warmbloods with debilitating--or sometimes just plain baffling--muscle disorders can get useful and reliable answers about their horses' conditions through a relatively simple muscle biopsy. So say University of Minnesota researchers,... Read More

Article

Polysaccharide Storage Myopathy: Blame It on the Genes

April 11, 2008

A genetic mutation in an enzyme called muscle glycogen synthase might be responsible for polysaccharide storage myopathy (PSSM)--a debilitating and life-threatening disease in horses characterized by abnormally high glycogen (the storage form of... Read More

Article

Service Pony Recovers from Health Crisis

April 10, 2008

Thanks to the skill and kindness of several Texas veterinarians, a blind woman's assistive guide pony is recuperating from serious illness.

Trixie is a nearly 14-year-old Pony of the Americas mare, and she has been Tabitha Darling's service... Read More

Article

2007 Morris Animal Foundation Equine Research Wrap-Up

December 14, 2007

The results of equine research funded by the Morris Animal Foundation (MAF) in 2007 added to scientists' understanding of foal pneumonia, hereditary muscle disorders, laminitis, and pharmacology.

Read More

Article

Researchers Pinpoint Link Between Appaloosa Coloring and Night Blindness

November 21, 2007

Congenital stationary night blindness causes vision deficits in Appaloosas with certain coat patterns.... Read More

Article

New Research on PSSM Prevalence, Heritability in Progress

October 04, 2007

Researchers with the University of Minnesota have identified polysaccharide storage myopathy (PSSM) in 6-12% of overtly healthy Quarter Horses on six farms involved in a new study. They also said the disease could be more common within certain... Read More

Article

Morris Animal Foundation Funding 11 Equine Studies in 2008

September 25, 2007

In 2008, the Morris Animal Foundation (MAF) will fund about 120 animal health studies, including 11 new and continuing studies for horses. Equine enthusiasts are invited to sponsor or co-sponsor one of these studies with a total gift of $3,000 o... Read More

Article

Managing Hyperkalemic Periodic Paralysis

August 08, 2007

At the 2006 American Association of Equine Practitioners Convention, Dr. Sharon Spier spoke about HYPP.... Read More