GBtortoises said:I am very familiar with the Hermann's books being referred too, both are very good books by excellent German authors who have extensive experience with these species in captivity and in the wild. I really don't think the wild growth rates stated in those books are "outrageously slow" at all. I think that they're normal and as they should be in the wild and as they should be strived for in captivity.
I've maintained for nearly three decades now that the majority of tortoises raised in captivity are grown too quickly due to being in constantly excessive heat, fed a diet extremely rich in vitamins and minerals and high in calories. All the things that you stated above are absolutely true. Many of the tortoises shown on this site are examples of that. Several have obvious signs of accelerated growth, due to the above conditions. 2 & 3 year old tortoises wouldn't be adult size and sexually mature if they were in the wild. Many of these types of tortoises that I have personally encountered over the years not only do not look like their wild or correctly raised counterparts, but they are often more "frail" in comparison.
No one here has proof that a captive born and raised tortoise will outlive a wild tortoise, or vice versa. None of us have been around long enough to be able to proof it and probably won't be. Wild caught tortoises in most cases are often up against adverse daily survival challenges. Heat, cold, dryness, flooding, sparse food availability, predators, mankind and more. But over thousands of years they have adapted, survived and in most cases, thrived and expanded their populations (until we got involved). Captive born and/or captive raised tortoises are subject to none of the above, except mankind. Many people pamper them, overfeed them, feed them what is to the tortoise, junkfood. Keep them excessively hot with little to no daily fluctuation, nevermind seasonal changes. Often in a small box that doesn't come remotely close to enough area for normal activity. So the end result is that the captive tortoise takes in far more calories, vitamins and minerals that it's body cannot properly use in the way that it was "designed". Which results in tortoises that grow too rapidly, mature too quickly, often times bumpy, pyramided or appearing as if they're "growing out of their shell" and look (and sometime act), different than they're wild counterparts. I personally don't think we're doing them any favors (or the species any justice) by doing this. Maybe I'm too much of purist, but I constantly strive to raise my tortoises to look and act like they're wild counterparts because that look is part of what attracted me to tortoises and turtles in the first place, not a bumpy, pale skinned tortoise with overgrown beaks and nails.
I know that all of the above practices will continue regardless of what myself or anyone else says. I'm okay with that because while I think it may be wrong, they're not my animals to have any say over. I'll continue to raise mine slow, smooth, healthy and as close as possible to they're wild counterparts as I can under captive conditions. It's what I prefer to do.
Great post!