
.jpg)
HEALTH ISSUES
IN THE STAFFORDSHIRE BULL TERRIER
The Staffordshire Bull Terrier is by nature a robust
and healthy breed. However there are a couple of hereditary health issues
which you need to be aware of if you are considering buying a new puppy
or planning to breed from your bitch.
Report from
1.
L-2-HGA Hydroxyglutaric Aciduria In the past few
years a small number of Staffords have been diagnosed with a metabolic
disorder, its clinical name is L2 hydroxyglutaric aciduria or L-2-HGA.
This condition manifests itself in varied ways with affected dogs displaying
behavioural changes and dementia, anxiety attacks, having full blown
seizures, as well as exercise intolerance and ataxia (unsteady gait),
tremors and muscular stiffness. Dogs from totally different bloodlines
have been found to be sufferers and the number of affected dogs diagnosed
has risen. The disorder (and a similar linked disorder D-2 HGA) is found
in humans, again very rare, but nevertheless devastating for those families
affected by it. The disorder has an autosomal recessive method of inheritance,
which means that both parents must be carriers of the affected gene
to produce affected offspring. Through excessive
hard work not only on behalf of the Animal Health Trust at Newmarket
and by people submitting blood and urine samples from the families of
affected animals a genetic test has been determined to identify the
carriers of the gene which causes L-2-HGA. IT IS THEREFORE
ADVISABLE THAT ALL BREEDING STOCK BE SCREENED IN ORDER TO ERADICATE
THIS CONDITION IN THE FUTURE. It is known that
HC is inherited by and automal recessive path (i.e. both parents must
be carriers of the defective gene to produce and affected offspring).
HC is a progressive condition and this means that although a puppy is
not born with cataracts they will start to develop at a juvenile age.
(maybe from 8 months onwards), and will progress until the dog is totally
blind. This condition is bilateral which means is affects both eyes
equally. Thanks to the tireless research by the Animal Health Trust
in Newmarket there is a now a DNA Test for Hereditary Cataracts. The mode of inheritance
of PHPV is not so clear, but it is known that it is a congenital condition
(present at birth) and that it is not progressive. This means that if
a puppy is born with PHPV it can be detected by ophthalmic screening
from 6 weeks of age and if it is affected, whatever the condition of
the problem at that stage it will not change throughout the dogs life.
Either of the above
conditions can be operated on, but it is a serious operation and can
be traumatic and very expensive. It is not always covered by insurance
due to the hereditary nature. Even though the
genetic test is now available for Hereditary Cataracts it is still important
to screen for PHPV. This type of cataracts
is found in other breeds, particularly the Labrador and Golden Retriever. Here are some of The Kennel Club rules on breeding Before thinking about breeding from your bitch, you should acquaint yourself with the Kennel Club Regulations on registering litters and the registration system in general. A Guide to Litter Registration can be obtained from the Kennel Club, but you will need to remember that the Kennel Club will not accept an application to register a litter when: a) The bitch has already whelped six litters, or b) The bitch was under a year old at the date of mating, or c) The bitch has already reached the age of eight years at the date of whelping. N.B. Relief from the last restriction may be considered provided the dam has previously whelped at least one other registered litter, and a written application is made prior to mating and supported by veterinary evidence confirming the suitability of the bitch involved in the proposed whelping. You will also need to ensure that your bitch's Kennel Club registration does not carry a breeding restriction (endorsement). If there are any, you will need to discuss this further with the person from whom you obtained the bitch, as any breeding endorsement will need to be removed before registration of a litter can take place. In most cases it will be the breeder who has placed the endorsement, and who will therefore be the person empowered to remove it.
This can be done by submitting a blood sample to the AHT at Newmarket.
For instructions on sample collection please download request for DNA
testing form HERE
TESTING
CAN TAKE UP TO 6 WEEKS FOR RESULTS SO PLEASE MAKE SURE YOU HAVE THIS
DONE IN PLENTY OF TIME BEFORE YOUR PLANNED MATING.
2. HC
– HEREDITARY CATARACTS.
For instructions on sample collection please download request for DNA
testing form HERE
3. PHPV
– PERSITENT HYPERPLASTIC PRIMARY VITREOUS
4. PPSC
– POSTERIOR POLAR SUBCAPSULAR CATARACT.
It usually remains as a small, punctuate cataract and doesn’t
usually lead to sight problems in these two breeds. It has been placed
on schedule 3 of the BVA/KC/ISDS Eye Scheme because a number of Staffords
that have been through the Scheme have been found to have this type
of cataract. This type of cataract cannot be detected through litter
screening. The mode of inheritance is unknown and has a variable age
of onset. BREEDING STOCK SHOULD BE TESTED ANNUALLY TO DETERMINE
THAT THE DOG IS CERTIFIED CLEAR AT THE TIME OF MATING.
Eye
Testing Clinics
The other test required is phpv eye testing,
This needs to be done by an eye specialist
We found it hard to find out where to get this testing done
(here is the contact details of the people we used They will be able to put you incontact with a specialist in your area )
MR Mason
Seadown Veterinary Group
Frost Lane
Hythe
Southampton
Hampshire
SO45 3NG
023 8084 2237