BSK
Well-Known Member
What I'm talking about when I say a "left-skewed curve" can be seen in the below graph. This is actual conception date data from a large property with a very balanced adult sex ratio and advanced buck age structure (this was in Georgia). Notice how the peak date is skewed to the left of center. Breeding explodes quickly in the process, and then slowly tails down. In this example, all conceptions fall withing a 6 week window. Yet 65% of conceptions occur during weeks 2 and 3 of the 6-week window. In fact, 70% occur in the first 3 weeks, and only 30% in the second 3 weeks.