These questions relate to the practicality of
improving a breed or developing a bunch of really great animals for human
use. Cloning does work to increase the supply of desirable (from a human
standpoint) plants, but while it increases the supply of say Granny Smith
apples, it does not help the search for an even superior Granny Smith type
apple.
The definitive answer to your other questions will
have to await more data. Apparently, those who cloned Cash feel that the
clone will be reproductively fine, and sire the same type of offspring Cash
would have if he had not had that one vet visit.
As for using the Cash clone for performance first,
I suspect the extremely high cost of his production limits that option.
Why take a chance that he would never prove himself for many reasons, unrelated
to cloning, when his seman will be (hopefully) in great demand?
Ed
Ed & Wendy Hauser 2994 Mittower
Road Victor, MT 59875