[Blistering Winds]

Inbreeding/Linebreeding is used interchangeable, depending on the "outcome" of the foal! LOL

If you understand genetics and know the genes of what you have, then you can take that LEAP of line breeding! The key to line breeding, it creates a more "HOMOZYGOUS" (same gene both sides) and trys to get rid of recessives and heterozygosity out of the gene pool. BUT, there are other genes involved, that some when in a recessive state, cause problems, other with dominant traits in BOTH succession is bad. So it is russin roulette when you play with line breeding. You get your homozygosity, but you chance that other genes that become homozygous are BAD traits together!!

[bay_blnd jmpr07]

Fiona has Furiousso II on 2 of her Oldenburg lines, but they are spread out a few horses. so thats considered line breeding?

BBJ

[wyldterv]

Annabelle, I am NOT a genetics major BUT I have audited several genetics classes at various colleges across the US to better my understanding on the subject and be able to apply intelligent decisions to my dog breeding and sheep breeding programs.

I had the opportunity to attend a major world class scientific symposium last year courtesy of Roger (my other half who is a scientist) held in Seattle, WA I attended the genetics lectures and one of the most interseting ones I attended was by a woman who is not only a top research scientist in her field (a specific form of genetics I can't remember off the top of my head, will have to look up the lecture outline and notes) who is also a top breeder of AKC registered Basset Hounds and Beagles. One of the things she emhpasized was that MORE breeders needed to understand how inbreeding and linebreeding are actually very beneficial to a breed and setting the most desireable of characteristics within that breed.

It was further emphasized that you must do your homework carefully and be prepared to cull for undesireable traits. I was really impressed with the quality of information at this event and glad to see that my personal theories on linebreeding with occassional forays into true inbreeding have been proven scientifically to be sound breeding practices.

I have a grandmother/Grandson breeding out of already moderately tight linebred pedigrees that produced my "D" litter. To date at 2.5 yrs of age there are no known health issues in this litter of 6 (3 males, 3 *******) and this litter has been the best litter in temperament and breed type I've bred to date. They have show and performance records that are positive to back up that statement. My A litter, (which is where the sire of my D litter came from ) is moderately line bred. My B and C litters were complete outcrosses and that's where undesireable traits have cropped up.

What I Do have working for me is a very well researched background history on my dogs pedigrees and their direct AND indirect ancestors. With that information I have been able to take educated, calculated risks. I like to go in, go in and then go completely out and then come back in again to keep set type, structure and movement and when I do go out, I try to breed like pheynotype to like to keep my dogs 'style' and 'type' consistent.

When it comes to horses I personally look for well bred linebred animals BUT educate myself on what exactly is behind that pedigree so I can make educated decisions about health and temperament possibilities.

[wyldterv]

Originally Posted by bay_blnd jmpr07

Fiona has Furiousso II on 2 of her Oldenburg lines, but they are spread out a few horses. so thats considered line breeding?

BBJ

Yes but depending on where they fall in the pedigree, it really would be light line breeding on that particular horse.

For example I have a dog that has Sam in his pedigree 3 times. Sam is 3 and 4 generations back. This is loose linebreeding on Sam. ANOTHER Dog I have is also a Sam descendent, he has 7 crosses to Sam, this dog is tightly linebred on Sam AND this dog has the look of his great grandsire, Sam as well, which is what I was hoping to pull out as Sam was one of the best Belgians of his time.

[Blistering Winds]

Wyld has that right. "actual" line breeding as my breeding prof explained is where one sire is the sire, grandsire, great grandsire, and on and on and on continuously.

Loose line breeding or skip line (someone told me that term once) is where he pops in every OTHER generation.

Scattered in and out with no actual sense is not actual line breeding. Like if you breed grandson to grand daughter, not line breeding. UNLESS they are FULL brother and sister. You still have heterozygous traits if they have different dams.

[jumpsstumps14]

well i dont beleave in inbreeding i dont care how far down the genaration. And i would think that even if it is far down in genaration that there would be some fault even if it is not visible to the eye and it may not show up in the early days but when it gets older they may start popping up and you may not no were they are coming from.

[SalemWitchChild]

As long as its not close, such as sire/daughter.. Then I don't see a prob. Like second cousins, or great great's.. The genetic difference should be significant enough to not cause problems. Most QH and Paints I see usually are linebreed.

[Top Dun]

Line breeding can be ok but I prefer not to cross anything to closely. I've got a line bred filly her sire and dam were half bother and sister. Both had the same sire but different dams. I've got another mare wo trackes back to the same stallion once on the sire side and once on the dam side, but the stallion is 5 generations back and different breedings inbetween. And my last filly also has the same stallion in her pedigree 3 times, but all 5 or more generations back and different breeding lines closer in.

However my preferences are for a more diverse bloodline, however in Foundation appaloosas that is some times difficult to find WITHOUT cross breeding to other breeds. So I look for a stallion who does NOT have the same lines as my mares. If the stallion is line bred AND a quality stallion I won't turn him down just for that. If I'm going to buy a horse, I will NOT turn one down just because of line breeding or heavy breeding in certain lines. The QUALITY of the horse itself is the reason for purchase not just bloodlines.

[SalemWitchChild]

Originally Posted by Top Dun

If I'm going to buy a horse, I will NOT turn one down just because of line breeding or heavy breeding in certain lines. The QUALITY of the horse itself is the reason for purchase not just bloodlines.

Well said top dun

[HelenTB]

Personaly I cant stand in breeding breeding a mare to her sire...it's wrong and the foals normaly turned out messed up...literaly because of the genes being so close.