"The hind-limbs of the cub were paralysed and with the angry mother refusing to suckle him, his condition worsened," Uttam Yadav, in-charge of the zoo, said.
Four days back another cub from the same mother died.
Yadav said that the tigress, Kamlesh, gave birth to three cubs on October 4 after captive breeding with a tiger from the same zoo, but did not suckle the new-borns. It was her first delivery.
She attacked the cubs when they tried to suckle, he said.
Authorities fed cow milk to the cubs, but could not save two of them. The condition of the third cub too is serious.