Glycogen Branching Enzyme Deficiency (GBED) is a genetic disorder that causes muscle weakness in Quarter Horses. Symptoms include late term abortion / stillbirth (at least 3% of abortions in Quarter Horses may be due to GBED) or weak foals that require warming and assistance to nurse. Some foals may appear healthy for a time but eventually develop seizures, become too weak to stand or die suddenly. GBED foals are less active than other foals. In spite of aggressive treatment, all known cases of GBED have been euthanized or died by 18 weeks of age. GBED is a recessive genetic defect of the Glycogen Branching Enzyme Gene that is responsible for forming the sugar (glycogen) that provides energy for numerous tissues in the body. If a horse carries this gene, they can pass it to their offspring. If both parents carry the gene, 25% of the resulting foals will die due to inheriting two copies of the gene. Please make sure at least one of the parents, from every breeding you make, have been tested N/N for GBED.

Hereditary Equine Regional Dermal Asthenia (HERDA), also known as Hyperelastosis Cutis (HC), is a genetic skin disease of the American Quarter Horse tracing to the foundation stallion Poco Bueno. When a horse has this disease there is a collagen defect that results in the layers of skin not being held firmly together so that when the horse is ridden under saddle, or suffers trauma to the skin, the outer layer often splits or separates from the deeper layer or tears off completely. In dramatic cases, the skin can split along the back and even roll down the sides, with the horse literally being skinned alive. Most horses with HERDA are euthanized for humane reasons between the age of two and four years as HERDA is always fatal and cannot be controlled.  Based on the testing done by Cornell University approximately 14 to 15 percent of our performance bred horses may be carriers. If a horse carries this gene, they can pass it to their offspring. If both parents carry the gene, 25% of the resulting foals will die due to inheriting two copies of the gene. Please make sure at least one of the parents, from every breeding you make, have been tested N/N for HERDA.

Zan Parr Nic has been tested Negative / Negative (N/N) for HERDA

EVA

Equine Viral Arteritis (EVA) is a contagious upper respiratory disease of horses caused by the Equine Arteritis Virus (EAV). Horses exposed to EAV can exhibit mild clinical signs of an upper respiratory illness, or no apparent symptoms. The virus causes abortion in pregnant mares, illness / death in young foals and establishment of a carrier state in stallions. Carrier stallions shed the virus in their semen and it is transmitted to the mare during breeding with fresh, cooled or frozen semen. Secondary spread occurs by the respiratory route from the mare inseminated with the infective semen to other susceptible horses, causing an abortion outbreak. If a mare is bred to a carrier stallion she will probably be fine, but all of the pregnant mares exposed to her after she is bred will most likely abort. If your mare is not currently vaccinated for EVA please make sure the stallion you are breeding to has been Tested Negative and Vaccinated Annually for this disease.

Zan Parr Nic has been tested Negative, and Vaccinated every January, for EVA

Cox Ranch - Reiners & Russells - Dale & Chris Cox

Main Email: cox@coxranch.com - Horse Page / Nic  / Dog Page / Whip

Please send large Email Files (pictures) to: mnjrt@yahoo.com

Phone: 580-276-3112 home or 612-270-8964 cell

Snail Mail: Cox Ranch - Rt 2 Box 121 - Marietta, OK 73448

Page last updated on 06/08/08

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