If are into breeding and want to import or export your dog to/from USA, the dog has to be registered with AKC.

Most countries outside USA are associated with FCI and that means they only recognise AKC pedigrees, not CKC pedigrees.
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See the ad at the bottom of the page :-)

http://futurepet.com/dogclass.htm

If the first litter is only 5 months old, isn't that a bit too early to evaluate them and say this bitch should be bred again at all?

Before you even consider a second litter, you need to evaluate the first litter.

Very few do...

If I am importing a dog from another country it can be years of planning ahead.

I see maybe a certain breeders dogs and follows them for years, try to find out everything about their and their relatives health etc.

And I would...

The Silken Windhounds have had this requirement for several years.
All dogs need to be DNA-profiled before you can register offspring from them.

This way almost the entire breed is profiled, I DNA profile all dogs I breed, regardles...