The girls were then sold as brides to Islamist fighters for 2,000 naira ($12) each.
There was however no independent confirmation of his report and the defence ministry did not immediately answer calls seeking comment.
Some of the girls who escaped have said the hostages were taken to Borno's Sambisa Forest area, where Boko Haram has well-fortified camps.
Boko Haram's name translates as "Western education is forbidden", and it has repeatedly attacked schools during an insurgency aimed at creating a strict Islamic state in mainly Muslim northern Nigeria.
The Islamists have set schools on fire, massacred students in their sleep and detonated bombs at university campus churches.
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