LOL dude what the hell is this crap?! I'm a hunter myself, have killed many deer in my day....deer that were running for their lives from my walker hounds.....you wanna tell me their adrenaline wasn't pumping?
That is a total "urban legend" (I wouldn't even call it a legend b/c this is the first time I've ever heard it mentioned). The ONLY difference in taste you will find is
a) Between a young deer and an older deer.....older deer have tougher meat...younger deer tend to be more "tender"
b) Whether you let the game hang for a few days to "cure" or not....it lets all of the blood solidify and the moisture in the meat to dry....gets the "gamey" taste out of it.
Maybe that's what you're talking about.