Prasad said if Doordarshan had taken the interview and altered it under pressure, the country was entitled to know the answer.
"If Narendra Modi chose to give the interview to Doordarshan, I think the entire interview should have been played," Prasad told Times Now.
In its statement, Doordarshan said it had recorded the interview with Modi at Gandhinagar April 26 in a 'walk the talk' format.
"This was a three-camera production as Modi gave this interview while walking on his lawns and required a lot of post-production (editing) before putting it on air. The team came back from Gandhinagar in the late night of April 26 and after that, post-production was done to telecast it in a fixed slot," it said.
DD News said the interview was telecast at 9.30 p.m. April 27, with a repeat telecast at 3 p.m. April 28.
"There was no interference or control from any authority in the entire process. Important portions of the interview were used in all the important bulletins of DD News also. There was no attempt to downplay the interview, rather it was given wide pre-telecast publicity and also repeated the next day, April 28. The clips were also used in news bulletins," it said.