Your horse did not inherit the HERDA mutation and is considered normal for this trait. Your horse will not be affected by symptoms of HERDA and cannot pass the mutation to offspring themselves.

• Skin that feels to be more elastic than the average horse.
• Wrinkly skin.
• Large open wounds when pressure is applied.
• Slow healing wounds.
• Severe scarring.
• Osteoarthritis at a young age.

A horse who is affected by HERDA will not be able to live in a herd environment due to the possibility of injury which would be slow to heal. UV rays from sunlight can further degrade the quality of collagen in the skin and most are kept indoors. Quality of life is generally not acceptable, and most owners opt to euthanize.

A heterozygous horse (N/HRD) is not known to show any signs or symptoms of this disorder.

There is no cure for HERDA. Subsequently, the majority of HERDA affected horses are euthanized between ages of 2-4 years due to poor quality of life.

When breeding any horse, probability of offspring inheriting disease causing genetic mutations should always be a factor to consider. This is especially important for diseases like HERDA, where the prognosis of affected horses is extremely poor.

Your horse did not inherit the HERDA mutation and is considered normal for this disorder. They cannot pass on the mutation to offspring themselves.

Expected breeding outcomes are shown below. A normal HERDA gene is indicated by "N". A mutated HERDA gene is indicated by "HRD".

100% chance of a foal who does not carry a copy and is considered normal. They cannot pass on the mutation to offspring themselves.

50% chance of a foal who does not carry a copy and is considered normal. They cannot pass on the mutation to offspring themselves.

50% chance of a foal who inherits one copy and will appear normal. This horse will not experience symptoms but can pass on the mutation to offspring.

100% chance of a foal who inherits one copy but will appear normal. They can pass on the HERDA mutation to offspring.

• UMN-HERDA
• https://youtu.be/ZlWuSOauz98
• UCDAVIS-HERDA
• VGL-HERDA

Your horse inherited one copy of HERDA.

Since two copies of HERDA are required for a horse to be affected, your horse will not experience any symptoms of HERDA. Your horse has one copy and they are known as a carrier and can pass on the HERDA mutation to offspring. Therefore, care should be taken when selecting a horse to breed to.

• Skin that feels to be more elastic than the average horse.
• Wrinkly skin.
• Large open wounds when pressure is applied.
• Slow healing wounds.
• Severe scarring.
• Osteoarthritis at a young age.

A horse who is affected by HERDA will not be able to live in a herd environment due to the possibility of injury which would be slow to heal. UV rays from sunlight can further degrade the quality of collagen in the skin and most are kept indoors. Quality of life is generally not acceptable, and most owners opt to euthanize.

A heterozygous horse (N/HRD) is not known to show any signs or symptoms of this disorder.

There is no cure for HERDA. Subsequently, the majority of HERDA affected horses are euthanized between ages of 2-4 years due to poor quality of life.

When breeding any horse, probability of offspring inheriting disease causing genetic mutations should always be a factor to consider. This is especially important for diseases like HERDA, where the prognosis of affected horses is extremely poor.

Your horse is a carrier for HERDA that can potentially pass it on to offspring. Your horse will however, appear normal. They will not experience symptoms of HERDA.

Expected breeding outcomes are shown below. A normal HERDA gene is indicated by "N". A mutated HERDA gene is indicated by "HRD".

50% chance of a foal who does not carry a copy and is considered normal. They cannot pass on the mutation to offspring themselves.

50% chance of a foal who inherits one copy and will appear normal. This horse will not experience symptoms but can pass on the mutation to offspring.

25% chance of a foal who does not carry a copy and is considered normal. They cannot pass on the mutation to offspring themselves.

50% chance of a foal who inherits one copy but will appear normal. This horse will not experience symptoms. They can pass on the HERDA mutation to offspring.

25% chance of a foal who inherits two copies of HERDA and will experience symptoms. This horse will pass on HERDA to offspring.

50% chance a foal will inherit one copy of HERDA and will appear normal. This horse will not experience symptoms. However, they may pass on HERDA to offspring.

50% chance of a foal who is homozygous (HRD/HRD) and will be affected by HERDA. This horse will pass on HERDA to offspring.

• UMN-HERDA
• https://youtu.be/ZlWuSOauz98
• UCDAVIS-HERDA
• VGL-HERDA

Your horse inherited two copies of HERDA and is considered homozygous for the mutation.

You may notice that your horse seems to have skin that is more elastic than a normal horse. They may have slow healing injuries, scar easier, and have permanent wrinkle like patches. Most homozygous horses are euthanized due to these slow-healing injuries.

• Skin that feels to be more elastic than the average horse.
• Wrinkly skin.
• Large open wounds when pressure is applied.
• Slow healing wounds.
• Severe scarring.
• Osteoarthritis at a young age.

A horse who is affected by HERDA will not be able to live in a herd environment due to the possibility of injury which would be slow to heal. UV rays from sunlight can further degrade the quality of collagen in the skin and most are kept indoors. Quality of life is generally not acceptable, and most owners opt to euthanize.

A heterozygous horse (N/HRD) is not known to show any signs or symptoms of this disorder.

There is no cure for HERDA. Subsequently, the majority of HERDA affected horses are euthanized between ages of 2-4 years due to poor quality of life.

When breeding any horse, probability of offspring inheriting disease causing genetic mutations should always be a factor to consider. This is especially important for diseases like HERDA, where the prognosis of affected horses is extremely poor.

Your horse is homozygous for HERDA. This means they have inherited two copies of the mutation and will pass it on 100% of the time regardless of the other parent’s HERDA status. They will experience symptoms of HERDA, and precautions should be taken to minimize bodily injuries. Since there is no treatment for HERDA, most HRD/HRD horses are euthanized at an early age due to poor quality of life and therefore should not make it into the breeding population.

Expected breeding outcomes are shown below. A normal HERDA gene is indicated by "N". A mutated HERDA gene is indicated by "HRD".

100% chance of a foal who inherits one copy and will appear normal. They can pass on HERDA mutation to offspring.

50% chance a foal will inherit one copy and will appear normal. This horse will not experience symptoms. However, they may pass on HERDA to offspring.

50% chance of a foal who is homozygous (HRD/HRD) and will be affected by HERDA. This horse will pass on HERDA to offspring.

100% chance of a foal who is homozygous (HRD/HRD) and will be affected by HERDA. This horse will pass on HERDA to offspring.

• UMN-HERDA
• https://youtu.be/ZlWuSOauz98
• UCDAVIS-HERDA
• VGL-HERDA