Needed to survive however often a death trap

Curse; blessing
Precious to the owner; precious to the poacher
Used to gather food; used to make piano keys
I wish to protect my vital trunk; all you crave is profit and fortune
Struck down; you claim your prize
I lay there slowly dying; you wait retrieve my vital tusks
I have no hope; you have a shotgun
Two tusks; one shot, exploited!
I am fast; the bullet faster
I lose; you win!