What you guys are missing is that an older buck age structure (ex: more bucks in older age classes) IS a sign of a healthier herd
That is only opinion,it is not a fact. The health of a herd is not measured by the B/D ratio or the age distribution of buck in a herd. The health of a herd is based on breeding rates,productivity , recruitment. Until you can prove that an improved buck age structure significantly improves those factors, you are just repeating QDMA talking points.
PS: Did you know that a yearling buck's sperm are half as mobile and half as fertile as that of a mature buck. Those factors combine and mean that for a yearling to successfully sire the same number of offspring as a mature buck, he would have to breed 4 times as many does, or just breed them 4 times as much.
It doesn't get much funnier than that. Does that explain why 90% of adult doe were being bred before ARs was implemented and why productivity was higher in 2000 than it is today.