help with Daabs-Datum field

Hello, This is my first post. Thanks for providing this service. I am in a "Dobte" record which I understand to be baptism. The field "Den opgivne Fødsels Datum" has a date of 30 June 1857, but the field next to it "Daabs-Datam" has what appears to be abbreviation or initials "J.D." Any idea what this might mean? http://www.arkivverket.no/URN:NBN:no-a1450-kb20050311020163.jpg Entry number 109. Thanks in advance. JAved