Merle to Merle matings

[Giro 2,648]

heres another one to thrown in the pot...

 

If you have your own "line" of collie crosses And have Line bred Are you Running more risk of defaults????

 

And if they dont show in that litter could they throw it out in the next????

[Guest night time my time]

heres another one to thrown in the pot...

 

If you have your own "line" of collie crosses And have Line bred Are you Running more risk of defaults????

 

And if they dont show in that litter could they throw it out in the next????

depends how your line breeding and what faults may already lie beneath or on top,that you already know are faults,thats why most people breed back to a stright hound at least every 4th generation,to add pure blood and strighten faults out, id have to say the answer is yes you run more risk when line breeding but you are getting to the limet of what i know now so,there are people like 10/22 on here that could loose you with the genetics of it all,pm her if you want to be blown away with siance and gentics,she will happily answer all your questions,bet she looses you along the line mind,,its worth it though if you want to know,

[Paid 935]

I think all the colour (more white ext) eye colour (both blue ext) is all

a bit of bolax, I think you could certainly have not problems crossing

merle to merle, but that in some cases, you certainly could, so is it worth the risk ?

 

As you say, some breeds that are merle, are always crossed, with little problems

and also the hybridisation of lurchers, means a right mixed gene pool, even in 2 merle's

so this should lessen the risks, butstill, you would kick your self if you ended up

with a deaf litter, or with some of the other problems associated with this cross.

 

I myself wouldnt but its a call only you can make.

[Guest night time my time]

I think all the colour (more white ext) eye colour (both blue ext) is all

a bit of bolax, I think you could certainly have not problems crossing

merle to merle, but that in some cases, you certainly could, so is it worth the risk ?

 

As you say, some breeds that are merle, are always crossed, with little problems

and also the hybridisation of lurchers, means a right mixed gene pool, even in 2 merle's

so this should lessen the risks, butstill, you would kick your self if you ended up

with a deaf litter, or with some of the other problems associated with this cross.

 

I myself wouldnt but its a call only you can make.

load of bollocks?? very good!! the white is the weakness, simple,

[Paid 935]

But the same gene can be in a dog not showing much white, you can have

other dominant genes, hiding less dominant, but still dominant genes.

Its a risk which ever way you look at it, was my point.

[undisputed 1,664]

My understanding of it is this, its the actual mating of two merle dogs that is the problem. Personally I wouldn't do it.

[doga 50]

dont think id want to run that risk whats the point in chancing it,you wouldnt know if deaf or blind pups were in a litter for weeks,why put your dog and your self through that,just take the hole merle to merle thing as gospal choose a solid colourd animal in the mating.

 

 

you will know they have faults before there ready to go..

 

And i bred my bitch to a solid coloured dog.. but with so many collies in any line that merle gene is everywhere..

 

My pups have been vet checked no health problem at all...

obviously yes but as said not for weeks from berth they dont open eyes for a few week and ears have to develope also then you have three four week old pups we trouble.

[Guest night time my time]

true but risks are minimised if its not a dominate gene thats already showing,i gota go to beach, beautifull day and im missing it, will come back to this later

[Paid 935]

Yep, you are right, its a fairly tricky subject, but does interessed me, as it seems it does you too.

[socks 32,253]

if a litter of pups inherits two alleles for merling which can only happen when a merle is bred to a merle the puppies are often predominantly white ... deaf and/or blind ... and often develop other less immediately noticeable problems including organ failure and auto-immune disorders .....

 

in short even if you cant see any noticable ailments in the pups they may well have an underlying problem wityh one or more of their organs .......

 

in my opinion it isnt worth the risk breeding merle to merle at any cost ...........

[Paid 935]

I agree its not worth the risk.

 

Not questioning you on your post, I'm certain you are right, but just wondering if you know how breeds like the australian shepard get around this ?

[socks 32,253]

without going into genotypes etc etc and making things really complicated the simple answer is that the australian shepherd carries two alleles for merling .... one allele each is inherited from each parent .... the alleles are represented M for merling ... or m for solid .... so the resulting litter could be ... merle ... double merle ... lethal white ... lethal merle ... etc etc ......

 

once the litter is born there is a heavy cull of any puppys that may well inherit any problems and you will be left with around 20% of the litter .... that litter grows is put to a another 20% survival litter and so on and so on ......

 

of course this can only produce good dogs if ALL breeders carry out this practice ........

[Paid 935]

Thanks, so a long process of hard culling. Doesnt seem worth it too me for just a colouring.

[socks 32,253]

Thanks, so a long process of hard culling. Doesnt seem worth it too me for just a colouring.

 

it certainly isnt ... unfortunately some people dont see that and are prepared to put the coloure of a dog before its health ..........

[jembo 0]

I have a merle pup and would not breed from it with another merle. If it was going to line a another collie x I would want the bitch tested for the merle gene.

I would not want the heartache of sick pups, and nor would the bitch.

There are so many pups around of good breeding, surely it is not worth the risk. This is just my opinion.

 

W.H are you wanting to line Storm with a merle bitch?