The cavalier breed at a cross road
Quote:
Originally Posted by
LovesJellyBeans
I don't want to get slammed for this opinion, but I think at least as start to help the breed there needs to be new genes added to the breed. And try as hard as you possibly can, I'm not sure you are going to find them in Cavaliers. Sure breeding two 'A' clear dogs should result in healthy litters, but that doesn't exclude the possibility of the traits being carried and somehow emerging later. Or worse, this could lead to selectively breeding a new negative trait into the dogs. Would it be so bad to introduce new genes from a different breed of dog? I realize that a lot of the close breeds of dogs and even the founding breeds of dogs also suffer from SM and MVD, but with some exceptionally selective breeding, it would help get a few healthy lines going strong that could be bred into the population, with hopefully new genes that don't lead to these devastating diseases/conditions. Although, I am not an expert at genetics, I do have a fairly strong background in Molecular Biology, and have had the occasion to work with in-bred strains of mice (which have various useful genetic defects that we as scientists manipulate), so the concepts are familiar to me. Maybe it isn't that revolting to most people looking to rebuild the Cavaliers to out-breed with different breeds, but I've gotten the impression that it is a bit taboo, and it probably would never go over with the majority show breeders (who probably only care about the looks not necessarily the health).
As for the DNA testing... I imagine that they may be able to associate one to five genes, which lead to the smaller skull and CM, which in turn leads to SM, but I doubt they'd ever be able to make a simple enough test that will completely identify dogs that carry these genes and which mixes lead to consequences or not. It doesn't seem to be a simple one hit wonder that could lead to a quick fix.
THE CAVALIER BREED AT A CROSS ROAD
Thanks Jellybeans for getting to the Nitty Gritty about this problem in our Cavaliers.
OK let us who really Love our Cavalier Breed and don't want to let it go, suggest to the Kennel Club because of CM/SM which will finish off the Cavalier Breed,
No more Breeding of Cavaliers for at least 3-5 years from any Cavalier Breeder,Show Breeder, Puppy Farmer , BYB,
Let the Researchers tackle these Horrendous Problems to try and over-come the Saving of our Cavalier Breed
Remember these Health Problems are also Welfare Problems for our Cavaliers.
This is now a Desperate Time for Cavaliers
If Cavaliers are continued to be Bred what good is that doing for the Breed,those CM/SM Genes will continue to Multiply,so for goodness sake Bite the Bullet,and let the Breeding of Cavaliers stop for a few years ,however Unpalatable this might be to some.
Bet
The cavalier breed at a cross road
Quote:
Originally Posted by
Margaret C
SM was undoubtedly around back in the 1960s, some breeders have recalled having cavaliers that they could not walk on a lead. Obviously a lot of mildly affected dogs would have remained undetected.
Cavaliers all over the world, whether show lines or puppy farm stock descend from the founding dogs, but they will not have all developed in the same way.
Some countries were hard hit by SM a good few years before the UK, probably because particular imported UK dogs were used extensively at stud on the small population of resident cavaliers.
Other countries seem to have little SM in their home-bred stock although the use of unscanned UK imports will probably soon change that.
Puppy farm stock would be descended from the original founding dogs, but if they remained as a separate sub-population and the stud dogs used on them were not so line bred then they could offer different cavalier genes, and some of them may have less severe CM.
It is obviously wrong to draw conclusions from just one dog, and as I said this is just speculation on my part, but this thought was prompted by the fact that at the London Pet Show I was given the pedigree of a scanned ( at 4 years ) grade A dog where the the few names with affixes in the pedigree were well known PF names ( there were a couple of show champions in the fifth generation)
The owner had him scanned because her other dog had severe SM and she wanted to know whether he was also affected. He was KC registered and his COI was 1.3%
You are right Sins, it is a mess, one we got into unknowingly and no one is to blame for what happened originally, but that cannot still be said now.
This is not the researchers responsibility, or the KC or the BVA , it is the cavalier club members responsibility to bite the bullet,and however inconvenient, do what is necessary to breed away from the inherited problems in the breed and try and establish a nucleus of healthier cavaliers for the future.
There is a simple rule of thumb to indicate who is an irresponsible breeder even if it is not possible to check whether health tests have been done.
These days no responsible breeder should mate a dog or bitch younger than 2.5 years.....................So why is there at least one underage parent in half the litters registered by club members?
THE CAVALIER BREED AT A CROSS ROAD
I think that many Lovers of Cavaliers have realized that the Cavalier Breed is now Over-Whelmed by the CM Problem ,that about 90% of Cavaliers are suffering from this Condition ,which is Chacterized by Brains being Too Big for the Skulls.
To have been given more Worrying Information was the Fact that 85 Whelps Researched for the Foetal Tissue Research All (100% )had CM
As I have mentioned before, this can hinder the Flow of the Cerebro Spinal Fluid ,cause Syrinxes to form and lead to SM.
Because this is now so Prevalent and it is along with SM complex Conditions ,meaning that it is likely that Several /Many Genes are involved,as LovesJellyBeans has just Posted mentioned that even if the Researchers were able to make a Simple enough Test that will completely Identify Dogs that carry those Genes and which Mixes lead to Consequences or not ,because of the Complex Nature of this Problem in Cavaliers as has now been discovered that there are Several Genes or even Many Involved.
This CM Problem now seems to be out of control for our Cavaliers.
I wonder how many of the 555 Cavaliers quoted in the Recent Veterinary Paper just Published ,70% had SM at 6 years of age,also had CM.
I know it was mentioned that 29 Cavaliers MRI Scanned at 6 years and over, 26 had CM.
I think that there are 3 Ways forward for our Cavalier Breed.
STOP BREEDING FOR A FEW YEARS ,let the Researchers be given time to discover if they can find those CM/SM Genes, because by keeping on Breeding Cavalier those CM/SM Genes will just keep on Multiplying.
Get Fresh Genes from Other Sources ,be it Puppy Farms, BYB's or where-ever.
Or Out -Crossing Cavaliers to another Breed.
We cannot stand by any-longer ,the Cavalier Breed just can't Survive much Longer.
We have got to Face Up to this Fact.
Bet