I agree that it is important to keep the animals genetics healthy. I talked to Ron Tremper at this years Daytona show and he told me that he doesn't really bring in any new "blood" like Christina said. I also asked him about if there are any genetic problems with that he told me that it has taken 15generations to see any ill genetic effects (minor like shorter tails etc.). I am thinking if you start with a diverse, healthy genetic line and with periodic additions off a new animal it should be enough to keep your colony genetically healthy. This is just what I think and many other people have different views when it comes to this.
