More inbreeding facts by Dr. Rif’at Hussain, breeder of Thoroughbreds for several decades. It'll take a while to get through.
have a very inbred christmas | bloodstock in the bluegrass
Inbreeding and its advantages and disadvantages in racehorses may produce certain desirable characteristics such as speed, stamina, soundness, constitution, character, etc.
What one reads today in the trade journals is notable either for a lack of accurate information or an incomplete account of the practice of inbreeding. The analysis usually provides a very limited and overly simplistic view of inbreeding and what it can do for the breeder in fulfilling his aim of producing smashing racehorses.
There is, however, one fundamental fact that must be kept in mind – that inbreeding is the only tool that we can use to manipulate the genetic puzzle to obtain substantial improvement in the racing ability of the modern Thoroughbred provided it is done in a carefully planned and deliberately well thought out manner.
Are you saying inbreeding is the ONLY way to improve racehorses genetically? That's completely illogical and untrue. There are MANY ways geneticists can figure out different genes, genetic issues and ways to fix them.
(Please do correct me if I'm wrong and misunderstanding you!)