But you apparently overlooked the fact that Dr. R. also said this in nthe same paragraph.
But will any changes be found after the new antler restrictions allow more bucks to reach the 2-year-old age class? To answer this question we will continue collecting conception data from roadkilled does as the deer population is modified by the new antler restrictions.
What they found as the result of their studies is that breeding rates and productivity decreased and there was no significant change in the breeding window.
This quote is from the 2007-2008 AWR.
The average reproductive rate for all females
was 0.97 embryos/doe. The median conception date for all does was 11 November.
Eighty-nine percent of all breeding occurred between 16 October and 16 December,
with the median date fawns bred as 30 November, 3 weeks later than adult does.
The median projected birth date for all fetuses examined was 28 May. Over the
last 7 years, conception timing has changed little (Table 1)