Since I don't know how old it is, I cannot guess whether it is a normal or a late bloomer. To determine whether a tom will be a good representative as a breeder has to wait until the tom is fully developed so that conformation, temperament, etc. can be determined.
It is not the normal development pattern. I won't use them as breeders because they tend to pass the undesirable trait on to their offspring.
More specifically, what's bad about slow-developing? Does it have to do with meat qualities? Laying qualities? Or is it just one of those things, like a short nose on a dachshund, that's not preferred because then it wouldn't look like a dachshund?
More specifically it is not the normal development cycle. When selling turkeys, people want to know the sex of the poults as early as possible. A late bloomer does not help when you can tell them the sex of all except that one particular one.
