Controversial US reality show Who's The Daddy, in which adopted children guess the identity of their father, has flopped in the TV ratings.
The show was screened on the Fox network
Viewing figures suggest 6.3 million people tuned in to the show, which screened on the Fox network on Monday.
The show featured a woman winning $100,000 (£52,000) by identifying her father from a line-up of eight men.
It was met with protests from the US National Council For Adoption, which said it exploited "sensitive emotions".
"Adoption is a very personal, meaningful experience and it should not be commercialised like this," Thomas Atwood, National Council for Adoption president.
Critics also attacked the show, saying that it was "tasteless and exploitative".
One of Fox's affiliate stations, WRAZ-TV in North Carolina, refused to air the show, instead screening a documentary about adoption.
On the pre-recorded programme, the contestant correctly identified her father and, in a further twist, was also reunited with her real mother at the end.
Fox producers defended the show, saying it was a "positive experience". They have made six specials, although only one episode has so far been broadcast.
Fox spokesman Scott Grogin said many people had found the programme "useful and empowering".
"We've had dozens of requests from adoptees saying that if we do another show they'd love to be a part of it," he said.