what does col:4.2% mean in a pedigree?

[angus1234]

Im not a breeder and have no intention to, however im researching bullmastiff pedigrees and would like to know what it means. Googling hasent helped!

 

[WalnutCrest]

I have no idea.

Maybe you can post a picture or a link to a website so that we can see more precisely what you're talking about.

 

[BlackShadowCaneCorso]

If I am remembering correctly it is co-efficient of inbreeding of a particular pairing.

 

[ruthcatrin]

Its the Coefficient of Inbreeding. The higher the number the more closely related the parents were. By itself it doesn't mean much. A really high CoI would mean the dog has alot of common ancestors, not nessecarily the end of the world, but it means that if there IS any genetic health problems in the line your dog's chances of getting them are greatly increased. However a really LOW CoI doesn't remove the risk either. You also have to look at how its calculated, for example: THIS is my Apollo's mother. At first glance she appears to have a CoI of 0%. Sweet right? Except that since the CoI is calculated by the pedigree software, and some of her ancestors weren't entered properly, that 0 may not mean much. I suspect its pretty close to correct, cause I know her owners were working on imported dogs, but since they didn't get entered right there's no guarantee.

 

[angus1234]

Thank you every one. Especially ruthcatrin. That makes since. The pup I have reserved (providing the breeding takes etc.) Is line bred. The breeder I have is extremly responsible and the pedigree is outstanding, very impressed.thanks againe.

 

[kbuchanan66]

Its the Coefficient of Inbreeding. The higher the number the more closely related the parents were. By itself it doesn't mean much. A really high CoI would mean the dog has alot of common ancestors, not nessecarily the end of the world, but it means that if there IS any genetic health problems in the line your dog's chances of getting them are greatly increased. However a really LOW CoI doesn't remove the risk either. You also have to look at how its calculated, for example: THIS is my Apollo's mother. At first glance she appears to have a CoI of 0%. Sweet right? Except that since the CoI is calculated by the pedigree software, and some of her ancestors weren't entered properly, that 0 may not mean much. I suspect its pretty close to correct, cause I know her owners were working on imported dogs, but since they didn't get entered right there's no guarantee.

You got Apollo out of a B&T Dam with lots of Blacks and B&T's behind her? What color was his father?

 

[ruthcatrin]

Gold lol

LEGEND'S KAILAS HIMALAYAN :: The Tibetan Mastiff Info Pedigree Database

 

[kbuchanan66]

Gold lol

LEGEND'S KAILAS HIMALAYAN :: The Tibetan Mastiff Info Pedigree Database

Man Genetics are Whack a doodle! Out of all the sires and Damn there is maybe 3 reds lol.

 

[thelady_v2010]

Holy crap those are some gorgeous dogs!

 

[ruthcatrin]

Gold (fawn genetically) is dominent over B&T, which in turn is dominent over recessive solid black (there's a dominent solid black too, different gene set though).

 

[kbuchanan66]

Gold (fawn genetically) is dominent over B&T, which in turn is dominent over recessive solid black (there's a dominent solid black too, different gene set though).

Really? The Fawn is Dominant? Well I guess that makes sense. I believe Tosa's are the same which is why the Black is rare..... On a side note the Black TM kind of remind me of a Newfoundlander. Okay I am done Hijacking the thread. I apologise

 

[ruthcatrin]

Really? The Fawn is Dominant? Well I guess that makes sense. I believe Tosa's are the same which is why the Black is rare..... On a side note the Black TM kind of remind me of a Newfoundlander. Okay I am done Hijacking the thread. I apologise

Fawn is dominent. Mind, they don't, yet, understand what causes the shade variations between the differing fawns. So you get Apollo, who appears to be a fairly rich red-gold, and his brother Aslan who's a fairly pale gold, and their sister Anna Sunshine who's REALLY pale gold, but they're all fawn.....

 

[kbuchanan66]

Fawn is dominent. Mind, they don't, yet, understand what causes the shade variations between the differing fawns. So you get Apollo, who appears to be a fairly rich red-gold, and his brother Aslan who's a fairly pale gold, and their sister Anna Sunshine who's REALLY pale gold, but they're all fawn.....

No different than in Labs how there is yellow, red and white but they are all variations within the Yellow coat. Red being Intense, yellow being normal and than White being faded..

 

[ruthcatrin]

No different than in Labs how there is yellow, red and white but they are all variations within the Yellow coat. Red being Intense, yellow being normal and than White being faded..

I believe (but can't swear to it) that with labs and goldens it at least partially has to do with their skin color, but have to admit that I've not looked closely. I do know that both labs and goldens frequently carry brindle and its actually really common for a golden cross litter to produce brindle pups. Which I think is just cool (but don't even come close to understanding the genetics of it).

 

[kbuchanan66]

I believe (but can't swear to it) that with labs and goldens it at least partially has to do with their skin color, but have to admit that I've not looked closely. I do know that both labs and goldens frequently carry brindle and its actually really common for a golden cross litter to produce brindle pups. Which I think is just cool (but don't even come close to understanding the genetics of it).

On another forum I learned that Lab's used to have what is called a Hailstone/Snowflake color which was a base of black or chocolate with White specks through out the coat almost like a reverse Liver tick but less ticking. As well as their is a genetic mutation color that is called mosaic. The dog can have a solid base color of say Yellow and than all of a sudden one body part is solid black. They think it is due to an embryo splitting to make twins but than one dies and the remaining fetus absorbs the dying one which causes a color variation....its confusing but looks really freaking awesome!

 

[ruthcatrin]

Yup, you see it in goldens too occasionally.

Here's one of teh better references for dog coat color: http://homepage.usask.ca/~schmutz/dogcolors.html it gets rather technical, but if you can wade through it, its fun reading

 

[WalnutCrest]

Its the Coefficient of Inbreeding. The higher the number the more closely related the parents were. By itself it doesn't mean much. A really high CoI would mean the dog has alot of common ancestors, not nessecarily the end of the world, but it means that if there IS any genetic health problems in the line your dog's chances of getting them are greatly increased. However a really LOW CoI doesn't remove the risk either. You also have to look at how its calculated, for example: THIS is my Apollo's mother. At first glance she appears to have a CoI of 0%. Sweet right? Except that since the CoI is calculated by the pedigree software, and some of her ancestors weren't entered properly, that 0 may not mean much. I suspect its pretty close to correct, cause I know her owners were working on imported dogs, but since they didn't get entered right there's no guarantee.

Ruthcatrin is correct.

However, I would like to specifically respond to only the part I bolded above ...

A high inbreeding coefficient doesn't necessarily mean that you're more likely to get ailments or maladies ... it really depends on (i) how far back the software goes to consider the relative amount of inbreeding (i.e., a four generation inbreeding coefficient is far different than a 20 generation inbreeding coefficient), (ii) how deep the software considers it's partial relationships (i.e., does it only look at actual dogs, or does it consider other moderately related dogs (cousins, uncles, half-siblings, etc.) who may be back in there somewhere), (iii) how truthful all the pedigrees are (as some people in various breeds have lied on their pedigrees, and as a result, you may not really know much about what you have), and (iv) what sort of decision process was used for selecting the dogs in the lines behind the pup you're considering.

A high inbreeding coefficient is NOT necessarily a reason to avoid a pup. In many cases, it can be a big reason to pick a particular pup!

 

[ruthcatrin]

Yup, I wasn't trying to say it meant the pup WOULD have problems, just that if the line had them your pups chances of getting them was increased.

 

[WalnutCrest]

And, I wasn't thinking you did ... but, wanted to emphasize that part for anyone newer to the ideas behind pure bred dogs.

 

[Marrowshard]

Earlier thread on mismarked dogs ... nothing to do with OP unless you want to draw the line between inbreeding and coat color genetics.

Mismark Mastiff coats

~Marrow