Common Genetic Problems of the Labrador Retriever All breeds of dogs, including the Labrador Retriever have some disorders that can be inherited. The common disorders include Hip Dysplasia, Elbow Dysplasia, Retinal Dysplasia, and Progessive Retinal Atrophy (PRA). Less Common disorders include Epilepsy, inherited heart defects, and bleeding disorders. These are seen less often in the Labrador. The selection process of breeding stock should include many factors such as researching the pedigree, general health, soundness, appearance, and temperament of the dogs being considered. Health screening and testing done on breeding stock is a very important tool used to reduce the transmission of inherited disorders. Unfortunetly the risk has not yet been eliminated, but well bred breeding stock with health clearances increase the chance of producing healthy puppies. Hip and Elbow dysplasia affect many breeds. Factors other than genetics may be associated with joint dysplasia such as nutrition, or, excessive joint stress and weight at an early age. Dysplasia of joints is associated with deterioration of the affected joint with the dog experiencing pain and progressive lameness. The severity of the conditon ranges from slight to severe. The use of OFA (Orthopedic Foundation of Animal) to examine x-rays of breeding candidates and using only those that are rated Good or Exellent to produce puppies could greatly reduce the incidence of joint dysplasia in the offspring. A reputable breeder will be able to provide OFA or optional Penn-HIP scores for the parents of puppies they produce. Surgical repair may be an option for dogs affected with joint dysplasia. Eye disorders associated with Labradors commonly affect the eye lids and can be easily corrected with minor surgery. The affected eye may appear to be red and tear excessively, giving it a moist look around the eye. Excessive squinting or blinking may also be noticed. Entropion - eyelashes are turned inward and may scratch and scar the eye Ectropion - the lower lid droops and eyelashes turn outward creating a pocket to trap debris that could cause an infection or scratch the eye. Distichiasis - the abnormal growth of eyelashes from the meibomian glands along the eye lid margin. The abnormal eyelashes are usually surgectly removed More serious inherited eye disorders in Labradors include cateracts, Retinal Dysplasia, and Progressive Retinal Atrophy (PRA). Some, but no all eye disases may progress to blindness, others may possibily be corrected by surgery. Annual eye examination by veterinary Ophthalmologist and CERF (Canine Eye Registration Foundation) clearances on breeding stock can greatly reduce, but not eliminate the occurance of eye disordes in the offspring they produce. Some seizures in Labradors can be due to a inherited form of Epilepsy. In some cases seizures are linked to various non genetic factors such as infections, trauma, low blood sugar, or exposure to toxins and pesticides. Seizures are very dificult for dog owners to deal with and the cause can sometimes be very difficult to pinpoint. Fortunately, seizures are not common and many dogs respond well to medication. Tricuspid Valve Dysplasia (TVD) is a heart defect that is not widely seen in Labradors. It appears to be inherited. There have been cases noted in offspring of a stud dog on the west coast that was later diagnosed with a mild form of the disorder. Von Willebrand's Disease is a bleeding disorder that is not commonly seen in Labradors A recessive gene that codes for an abnormal protein is responsible for the disorder. The severity varies. There is a screening test available for Von Wilebrand's Disease. |