really? can you post links or references to any of this information? I have done my research and found almost just the opposite. Sure constant line breeding may have an effect, but any proof of negative effects after a generation or 2?
and as for your big breeders... http://snakebytes.tv/index.php?optio...=151&Itemid=14
will also add my rats are quite a few generations in of being inbreed and have yet to see any negative effects. still producing big healthy litters