It doesn't matter, a doe is a doe
I agree. On our lease we usually see a family group with an older mature doe, a 1 & 1/2 year old from that nanny's previous year's birthing, and a fawn or two. We try the shoot the 1 & 1/2 year old because they (1) have decent body weight (2) are mighty good eating, and (3) less likely to have twins than the older gal.