things to consider:
1) is your dog really worthy of being a stud? remember if ma-stud siya, meaning the possibility of passing on to his offsprings the stud's traits - physical and temperament.
2) the more frequent you use him in sessions, the more rin gadeteriorate ang quality sa iya semilya, meaning pups may not be as healthy as one wishes. dam owners should be wary of how "mal-mal" the stud dog he is intending to use on his dam. the quality of the semen depends on how healthy the male is.
3) if nasobrahan? i would imagine to be weak and lethargic. bisag sa tawo pa, if pirme ug jugjug, kapoy kaayog lawas ug luspad db?
the above are just my opinion... i may be wrong but thats how i see it