[CONTA]

what is everyones thoughts on line breeding?? I am looking at a stud and I noticed that he has the same great (or great great, I can't remember) grand sire, one on the side of his dam and the other on the side of his sire..I will try to get a copy of the paper so I can be sure on that..but I think that is how it is..since this is so far back, how bad is it?

[CONTA]

oh he's a quarter horse

[AnnaBelle02]

Well in general I think the initial idea is laughable - if the foal turns out ok its "line breeding" if its deformed its "inbreeding".

Knowing as much as I know about genetics (Biotechnologist) you are darn lucky if you line breed and you end up with anything half decent - you are taking some major risks. If they are cousins its not such a big issue but to breed siblings, be they half or not is messing with gene distribution.

Anyways - in this case you should be fine, it sounds like it was far enough down the line.

[zorse]

If it's that far back I don't think it makes any difference. Most horses share the same bloodlines anyways (look on any WB and they'll have Ladykiller (TB)..and any QH will have Doc Bar).

[CONTA]

like i said i think its pretty far down, but i'll try to get a copy tonight and post it tomorrow...nobody else that has bred to him seems worried and everyone has turned out fine..but i wouldn't want to take the chance

[Sandra-A1]

I have no problem with it, but you MUST know your bloodlines and stock very well. Linebreeding can fix certain traits into your breeding program and I love to find a intensly linebred stallion to breed to a mare I want to breed when looking for a stallion!

LINEBREEDING, the most conservative form of inbreeding, is usually associated with slower improvement and limited risk of producing undesirable individuals. It can involve matings between closely or distantly related horses, but it does not emphasize continuous sire-daughter, dam-son, or brother-sister matings. The main purpose of linebreeding is to transmit a large percentage of one outstanding ancestor's genes from generation to generation without causing an increase in the frequency of undesirable traits often associated with inbreeding.

Because linebreeding is not based strictly on mating closely related individuals (with very similar gene types), it does not necessarily cause a rapid increase in homozygous gene pairs. Consequently, it will not expose undesirable recessive genes as extensively as closebreeding. For this reason, linebreeding is generally a safer inbreeding program for most breeders.

Intensive inbreeding (and resulting increased homozygosity) is often directly related to an increase in the expression of many undesirable traits. Therefore, the linebreeder should carefully study pedigrees for each prospective mating and determine if, and how closely, the mare and stallion are related. By following certain guidelines, the breeder can limit inbreeding (and, therefore, homozygosity) within their herd. At the same time, they may increase the influence of a common ancestor upon the entire strain or family.

[luvs2ride79]

If it's only one horse on both sides and it's further back than grand-father, it should be fine. IMO, it's not good when you get the same horse close up on both sides (like grandfather on both) or you get the same horse a LOT. We bought a paint breeding stock mare a couple of years ago. I knew she was line bred Skipper W, but Skipper only showed up twice in her 5 generation pedigree. Well, I did some searcher futher back and discovered she was 9 times Skipper W in 7 generations! And we wondered why she was a little "off", lol. However, when bred to stallions that had NO Skipper W, her babies were expectionally smart and pretty! She was a nice looking mare with good conformation, just a little "slow" LOL. We bought her as a riding horse, and that didn't work out for obvious reasons. So now she's a happy broodmare and even produced a Tobiano from a QH stud! The new owners are having her tested for Tobiano and OLW (he sire was a Frame Overo).

~Barb

[Paintlover]

I heard line breeding is inbreeding
Here are the differences:
Linebreeding: when in breeding creates a satisfactory result
Inbreeding: when the breeding creates one silly horse

[Sandra-A1]

Paintluver, I love your post!!!

Okay let me confuse everyone a bit more....just kidding...

By definition......

"inbreeding" is the mating of two closely related individuals. The degree of relationship varies.

"Closebreeding" refers to the mating of very close relatives such as sibling to sibling or parent to offspring matings.

In the Thoroughbred, it is generally accepted that repeating any ancestor within four generations falls under their outer limits of "inbreeding," while any duplications beyond that four generation limit are described as "linebreeding."

[*BaRrEL_BaBE*]

I don't like it much but it all really depends. Halo & Bandit's grandsire is a result of a certain sire's daughter being bred to him(iow, a mare was bred to her sire). I guess it was because that would make the product a double-bred Siemon Reed but I was less than impressed. And Echo is double Sugar Bars bred & also triple Three Bars but I think it's okay because it's like 4 & 5 generations back and with those exceptions, there's a lot of diversity of Quarter Horse blood mixed in.

One thing I will say is that I don't like the million-times-inbred-Impressive blood. I've looked at ads for halter babies with "great bloodlines" only to find that there's no one on their pedigree w/o the word "impress" hidden somewhere. Or when a horse is 100% foundation blood because it's ped only consists of like three horses. That really annoys me.