Aussie Whip 4,180 Posted August 29, 2024 Report Share Posted August 29, 2024 On 29/08/2024 at 11:59, low plains drifter said: Fair dinkum? Expand Ridgy didge old chap. Quote Link to post
Sully. 383 Posted August 29, 2024 Report Share Posted August 29, 2024 I’ve just crossed my bitch 3 weeks ago, half brother half sister 4 Quote Link to post
Backandbeyond 104 Posted August 29, 2024 Report Share Posted August 29, 2024 Half brother and sister is one thing. That's part of a breeding process for line breeding and keeping things tight. But dogs from the same litter is surely amateur stuff imo. Madness. 2 Quote Link to post
Black neck 16,328 Posted August 29, 2024 Report Share Posted August 29, 2024 On 29/08/2024 at 17:53, Backandbeyond said: Half brother and sister is one thing. That's part of a breeding process for line breeding and keeping things tight. But dogs from the same litter is surely amateur stuff imo. Madness. Expand Some of the so called top lines of bull terrier lurchers started out this way Quote Link to post
gnipper 6,571 Posted August 29, 2024 Report Share Posted August 29, 2024 It's line breeding if it works and inbreeding if it don't. Some very good livestock of all species has been produced from line breeding 1 Quote Link to post
Black neck 16,328 Posted August 29, 2024 Report Share Posted August 29, 2024 On 29/08/2024 at 18:14, gnipper said: It's line breeding if it works and inbreeding if it don't. Some very good livestock of all species has been produced from line breeding Expand And people Quote Link to post
Krishna 95 Posted August 29, 2024 Report Share Posted August 29, 2024 On 29/08/2024 at 18:15, Black neck said: And people Expand Works well for the Royals. Quote Link to post
mr moocher 1,001 Posted August 29, 2024 Report Share Posted August 29, 2024 ive done half brother and sister mating,and son over his mother all pups were fine and good examples of there breed then i out crossed 5 Quote Link to post
low plains drifter 10,824 Posted August 29, 2024 Report Share Posted August 29, 2024 On 29/08/2024 at 13:07, Aussie Whip said: Ridgy didge old chap. Expand Do they do Castlemaine? 1 Quote Link to post
Backandbeyond 104 Posted August 29, 2024 Report Share Posted August 29, 2024 On 29/08/2024 at 18:14, gnipper said: It's line breeding if it works and inbreeding if it don't. Some very good livestock of all species has been produced from line breeding Expand Agree with that first sentence. Why would anyone breed two siblings from the same litter? Genuine question. I wouldn't take a free pup from a brother sister mating, no benefits at all. Same exact genetics, no improvement to be gained. 1 Quote Link to post
Aussie Whip 4,180 Posted August 30, 2024 Report Share Posted August 30, 2024 On 29/08/2024 at 21:37, Backandbeyond said: Agree with that first sentence. Why would anyone breed two siblings from the same litter? Genuine question. I wouldn't take a free pup from a brother sister mating, no benefits at all. Same exact genetics, no improvement to be gained. Expand They do it to see what underlying genetic problems exist in their dogs and to cement a line. I wouldn't do it on purpose but I've only bred the odd litter for myself and rather use dogs that were good workers even if they are totally unrelated. Not worth the chance of having underlying problems come out later on. They have a strain of lab mice they only breed brother to sister and are never sick but it's probably hundreds of generations and culling to get to that stage. Quote Link to post
jeemes 4,573 Posted August 30, 2024 Report Share Posted August 30, 2024 On 29/08/2024 at 21:37, Backandbeyond said: Agree with that first sentence. Why would anyone breed two siblings from the same litter? Genuine question. I wouldn't take a free pup from a brother sister mating, no benefits at all. Same exact genetics, no improvement to be gained. Expand So all siblings are twinned? Quote Link to post
jeemes 4,573 Posted August 30, 2024 Report Share Posted August 30, 2024 On 29/08/2024 at 18:58, mr moocher said: ive done half brother and sister mating,and son over his mother all pups were fine and good examples of there breed then i out crossed Expand Why did you outcross ? Quote Link to post
Krishna 95 Posted August 30, 2024 Report Share Posted August 30, 2024 On 30/08/2024 at 07:21, jeemes said: Why did you outcross ? Expand The whole point of inbreeding is to lock in traits, and the only point in outcrossing is to add in traits that you desire. It would make no sense inbreeding and then immediately outcrossing, if that's needed then you shouldn't have been doing the inbreeding to start with. What is key is to cull hard when inbreeding, if done properly then you should be ok. 2 Quote Link to post
jeemes 4,573 Posted August 30, 2024 Report Share Posted August 30, 2024 On 30/08/2024 at 07:27, Krishna said: The whole point of inbreeding is to lock in traits, and the only point in outcrossing is to add in traits that you desire. It would make no sense inbreeding and then immediately outcrossing, if that's needed then you shouldn't have been doing the inbreeding to start with. What is key is to cull hard when inbreeding, if done properly then you should be ok. Expand I mean why didnt you go in more? How can we be sure that the good traits we are wanting to fix are fixed so quickly? Can you rid the strain of all recessives in just 2 matings? When you outcross you are introducing thousands of new genes and the the risk of undoing the good work you have done. The idea is to purify/fix as you say, its a fascinating thing but it takes time in dogs that are bred for work traits, but you have to have an eye on the physical aswell. 2 Quote Link to post
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