alipore zoo authorities hard time breeding tigers captivity fact taste success since even concluding unsuccessful seek happening around four years ago reason according zoo authorities inability cases passivity male tigers breeding tigers incarceration seems like toughie proposition distinguish us counterparts nandankanan menagerie bhubaneswar deem rather easy process fact nandankanan tiger population rose recently two imperial bengal cubs abide white tigress mated royal bengal male litany failures alipore zoo reason according mateaccording zoo authorities left stone unturned since successfully breed tigers mating natural need biological necessity healthy life sentence said zoo director asis kumar samanta adding treat breeding rather long first step achieve successful pairing tigresses choose mates take months attain stating trial error process said originate male female tigers kept two adjacent enclosure separated gamey wire fence kind compatibility exam soundbox lyric biological signals correct brought in concert next mating season distaff rejects male different tiger brought pairing samanta said adding successful pairing tigers mated depending tigress oestrous heat round facts gestation full stop tigers least days easier rear cub winter also kept mind fixing mating keep together enclosure copulate period observe closely set about getting violent separate checkmate take days samanta malesaccording samanta though females interested males simply task often cross female mating attempts end violent fights even successful pairing months males either demo occupy simply fly scene samanta told america zoo keepers led vets trying bring change years years ago successful couple rishi male payel female brought together mating rishi consistently failed perform said adding tiger finally gave tigress gave powerful blows some other instance director said effort better half rupa panthera tigris caught wild faced similar fate kept roaring circulate rupa excited even bit nape neck nothing came said add together rupa similar frustrating experience vishal male everything excite scratched back chased vishal simply fled environment witnessing series failures tiger even administered libido enhancing drugs vitamin nothing worked realised culprit lack libido captivity overall environment zoo tell zoo veterinary police officer dr pankaj kumar citing instance mating attempt rupa wild panthera tigris samanta said rupa tigress bred captivity mind human presence situation dissimilar wild tiger conscious surroundings even uneasy presence cctv added year built covered enclosure give privacy cited another reason behind tigers poor show age three iv tigers zoo older since tiger lifespan captivity ranges age fertile heptad nine years three past prime samanta panthera tigris breeding challenging according environmental activists pradeep vyas bittu sahgal tigers right age breed circumstance saw two tigers mate road people cars waiting watching vyas aforesaid jayant hyrax deputy director nandankanan zoo agreed saying never faced problem breeding tigers captivity fact good breeding record also bred white tigers captivity said zoological garden india white tiger safari till years ago since renamed tiger inputs life cycle wildin baseless royal bengal tiger lives years around years captivity fully adult adult weighs kilosfemales range sexual maturity three four years male quaternion five yearsthe ideal mating age 5 seven yearsin barbarian prefer mate november aprilfollowing pregnancy period days tigress usually gives birth two six sonny