is inbreeding bad
- Thread starter doubleA
- Start date
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FishHeadSoup
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would you do it with your sister? LOL
just kidding bro, for the most part it best to increase the gene pool...
just kidding bro, for the most part it best to increase the gene pool...
Man-induced inbreeding of animals has been going on since cave days. The selective in-breeding of animals to promote desired traits is called line-breeding (more milk producing cows, leaner beef, spotted (ocelot) house cats, larger sled dogs, faster race horses, etc). However, stretching the genetic line out too far can have grossly adverse effects. One effect is reduced hybrid vigor which can leave the line open to many genetic defects such as epilepsy, hip displasia, deafness, hemophilia, cancers, and a host of other diseases/defects.
It depends on what you are doing, for guppies I would inbreed three generations for selected traits, culling cripples, etc, ruthlessly, then outbreed for 1 generation. Then I would repeat the cycle.
No Inbreeding is perfectly normal and healthy that's how I ended up with seven fingers on one hand and three and a half on the other. Look how inbreeding has help West Virginia. 
Just fooling limited inbreeding is okay but would not continue after second generation.
Just fooling limited inbreeding is okay but would not continue after second generation.
There was a guy, back n the 70s, that tried line-breeding guppies to giant sizes. TFH ran an article with pics of his 4" females and 3" males. He combined linebreeding with lowered temps. The lower temps supposedly extended the longevity of the guppies so they had more time to grow. I guess the line didn't breed true since I don't see these larger gups available today.
What about those that sell only sbling pairs in betta's? Betta have been bred sister to brother for 100's of yrs. How do you thank we got the long fin vail tail. It was from breding stock with the tail or fin trat we wanted. To each other to again turn around and bred the best tail and fin trat from that fry to agin turn around and bred the best tail and fin trat from that fry. ON and on til we got the vail tail of today. Even the soild reds or blacks of today. from breding sblings togeather.