Germ, what makes you think an older doe has bad genes?

What is being bandied aboutis too much of a one size fits all approach to management. What any good management plan needs first is a good herd assessment. This is absolutely necessary before making any type of management plan. You have to determine the carrying capacity of your area (and surrounding area if the area you control is too small to be considered solo, which is usually the case). You have to do a browse survey to determine how badly the herd has impacted the local flora and how much of preferred and secondary browse is available. If all preferred, secondary, and even less preferred browse is eaten to the ground and up to 5' than it's a good indication you have too large a herd. You then have to determine what steps need to be taken to correct your area. But keep in mind that most people are fooling themselves that they can effect things in amajor way unless they can control a very large tract of contiguous land. After that there are many considerations on how to manage the area.

If you are interested in a truly scientific approach to managing your herd I suggest you buy and read Dr. Kroll's book A Practical Guide to Producing and Harvesting White-tailed Deer. He is a professor at the College of Forestry at Stephen F. Austin State University.