oklahoma city oklahoma legislature pass bill aim reduce state bulge population feral hog blame spread disease wipe crop would let people kill without hunt license study agricultural research organization find animals run wild oklahoma 77 counties could number high 1.6 million would one high feral hog populations state measure pass thursday republican-led legislature would permit hunters kill hog without hunt permit property someone else property landowner permission also would allow use night-vision equipment hunt republican governor mary fallin office say whether sign law legislation give oklahomans options combat rapidly grow feral hog population say republican state representative sean robert bill co-sponsor effective method eradicate wild hog currently aerial shoot helicopters state officials say feral hog wreak havoc oklahoma farm ranch ecosystems cost farmers ranchers landowners say tom buchanan president oklahoma farm bureau agricultural industry group support legislation bill opponents say could prompt people bring even feral hog oklahoma shoot hunters u.s. department agriculture animal plant health inspection service say damage cause feral swine across unite state could top billion farmer clean crop overnight dale nolte inspection service program manager say interview farmers tell us give plant high-dollar crop feral hog problem texas oklahoma california high number feral swine country nolte say inspection service operations remove 38 state nolte add problem feral hog prolific trap 70 percent pig population every year maintain population level right say kevin grant oklahoma wildlife service state director u.s. department agriculture wild feral hog ecological nightmare little beneficial native wildlife come feral swine grant say oklahoma lawmakers pass bill reduce feral hog population