A new study conducted by researchers at the University of California, Davis (UC Davis), has found that spaying or neutering German shepherds before the age of 1 triples the risk of one or more joint disorders, particularly for cranial cruciate ligament tears, according to a university release.
"Debilitating joint disorders of hip dysplasia, CCL and elbow dysplasia can shorten a dog's useful working life and impact its role as a family member," says lead investigator Benjamin Hart, DVM, PhD, DACVB, a distinguished professor emeritus in the UC Davis School of Veterinary Medicine, in the release. "Simply delaying the spay/neuter until the dog is a year old can markedly reduce the chance of a joint disorder."
In the UC Davis study, researchers looked at veterinary hospital records for a 14.5-year period for 1,170 intact and neutered (including spayed) German shepherds for joint disorders and cancers previously associated with neutering. The diseases were followed through 8 years of age, with the exception of mammary cancer in females, which was followed through 11 years of age. Dogs were classified as intact, neutered before 6 months, neutered between 6 and 11 months, or neutered between 12 and 23 months. Joint disorders and cancers were of particular interest to the researchers because neutering removes male and female sex hormones that play key roles in processes such as closure of bone growth plates, the release states.
The findings show that 7% of intact males were diagnosed with one or more joint disorders, as contrasted with 21% of males that were neutered prior to 1 year of age. Five percent of intact females were diagnosed with one or more joint disorders, while in females neutered before the age of 1 the percentage diagnosed rose to 16%. Mammary cancer was diagnosed in 4% of intact females, as compared to less than 1% of females neutered before 1 year. In intact females, urinary incontinence was not diagnosed at all; however, in females neutered before 1 year of age, it was diagnosed in 7% of cases.
contributed by dvm360.
Wednesday, July 6, 2016
Study shows early neutering poses health risks for German shepherds.
A new study conducted by researchers at the University of California, Davis (UC Davis), has found that spaying or neutering German shepherds before the age of 1 triples the risk of one or more joint disorders, particularly for cranial cruciate ligament tears, according to a university release.
"Debilitating joint disorders of hip dysplasia, CCL and elbow dysplasia can shorten a dog's useful working life and impact its role as a family member," says lead investigator Benjamin Hart, DVM, PhD, DACVB, a distinguished professor emeritus in the UC Davis School of Veterinary Medicine, in the release. "Simply delaying the spay/neuter until the dog is a year old can markedly reduce the chance of a joint disorder."
In the UC Davis study, researchers looked at veterinary hospital records for a 14.5-year period for 1,170 intact and neutered (including spayed) German shepherds for joint disorders and cancers previously associated with neutering. The diseases were followed through 8 years of age, with the exception of mammary cancer in females, which was followed through 11 years of age. Dogs were classified as intact, neutered before 6 months, neutered between 6 and 11 months, or neutered between 12 and 23 months. Joint disorders and cancers were of particular interest to the researchers because neutering removes male and female sex hormones that play key roles in processes such as closure of bone growth plates, the release states.
The findings show that 7% of intact males were diagnosed with one or more joint disorders, as contrasted with 21% of males that were neutered prior to 1 year of age. Five percent of intact females were diagnosed with one or more joint disorders, while in females neutered before the age of 1 the percentage diagnosed rose to 16%. Mammary cancer was diagnosed in 4% of intact females, as compared to less than 1% of females neutered before 1 year. In intact females, urinary incontinence was not diagnosed at all; however, in females neutered before 1 year of age, it was diagnosed in 7% of cases.
contributed by dvm360.
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