I'd rather have good genetics and less nutrition. Than visa versa. If it aint in the blood to start with nutrition and age is only gonna get you so far. Same with any other animal really whether your talking bout hunting dogs or race horses you pay for the bloodline. Thats where it all starts.
I have heard from deer farmers, gamedog breeders, and game chicken breeders that the female throws better genetics than the male. But having good genes on both sides is even better.