Trong Nhi already has had a calf (F Nhi Linh) in 2013. Both are the recent additions to the Washington NZP ("breeding") group.
Thanks, I’m aware of that.
My point is, surely the concern of large birth intervals in elephants (e.g. 10 years plus) concern cows that are over the age of 22-24 years e.g. a cow in their late 20’s onwards.
The rationale being that if a nulliparous cow can be expected to conceive up until the age of 22-24 years (when viability becomes a concern); then surely it’s neither here nor there whether a cow of the same age (in Trong Nhi’s case, 22 years) had a calf at any stage (in Trong Nhi’s case 12 years ago). I mean a cow could theoretically have a calf as young as six years, which would put her at 16 years since her last if is she reached 22 years without having another.
If anything having a calf within that timeframe should be an advantage as 22 months gestation, plus 10 months or so of non-cycling would be time the cow isn’t subject to ovulation scarring.