Breeding Merle Gene

Before purchasing A Merle English Bulldog or a Merle Exotic Bully puppy or adult there are a few things you should 1st know. Merle to Merle breedings is a big NO NO and breeding a Merle dog to a dog that doesn’t show any visible signs of being Merle but has a Merle parent should not be bred together. You should do extensive genetic DNA research to prevent a possible health disaster.

If you are like so many breeders that are new to breeding Merles there are few things you must do before you breed your female and as a stud owner I do this every time.

First I require confirmation from that your female is not a carrier of the Merle trait nor is a cryptic merle meaning that your dog is technically a merle dog you jus cant visually see the merle markings.

Once we establish that your female is neither we may proceed to complete the breeding To Klauz. Once puppies are born I normally wait till around 4 weeks before I run a complete color DNA panel & Genetic test with Animal Genetics on each puppy to ensure my customers are getting healthy dogs.

First I test for DM (Degenerative Myelopathy) which is a progressive disorder that affects the spinal cord of dogs.

SecondlyPrince Klauz I test for CR1 (Canine Multifocal Retinopathy) which means autosomal recessive eye disorder. This mutation causes raised lesions to form around the retina (doesn’t affect site).

Thirdly I genetic test every puppy in the litter for HUU (Hyperuricosuria) which means a dog has uric acid in their urine in which hard stones forms in the bladder making it very painful for dogs to urinate.

Once I get a n/n on the the return of all the genetic test meaning clear of disease. I proceed to put the puppies up for sale. All test can be done at the same time and can take 4-6 days for results to come back. The cost of these genetic testing from Animal Genetics along with full color DNA panel will be $240 per puppy.

Breeding Merle to Merle is frowned upon and highly NOT RECOMMENDED. Results could end up very dissatisfying. A double merle is created when two merle dogs are bred together. It doesn’t matter what color merle or what breed they are. If two merle dogs are bred together, each puppy in the litter has a 25% chance of being born a double merle. A double merle inherits the merle gene twice. One copy of the merle gene causes a marbling effect on the coat and creates lighter spots throughout the solid color coat. In a double merle, the marbling/lightening effect is doubled and the coat becomes predominantly white. Double merles also have a very high chance of being deaf, blind, or both along with possibly missing or added body parts because they lack pigment where it would normally be.

Please understand that merle of any breed bred to another merle of the same breed or crossbreed can get double merle puppies.

I have not done any Merle to Merle breeding and never will. The odds are extremely high for failure. I believe in controlled breeding where the outcome is more in the favor of all the puppies being healthy.

I encourage you to please do more research on the the Merle gene and as always please continue to breed responsible.