A central NSW woman has been threatened with being burnt alive by animal activists on Facebook after appearing in a photograph with a dead kangaroo for an upcoming photographic exhibition.

Katrina Byrnes, 19, has found herself at the centre of a vicious hate campaign after modelling for Dubbo Regional Gallery artist-in-residence Emma Thomson, who is photographing women in the area who participate in hunting.

Ms Byrnes said she has received dozens of threatening messages on Facebook after her photo was posted on animal activism pages.

Ms Byrnes now fears for the other models who had taken part in Ms Thomson's work, which will be exhibited in Sydney and in the Western Plains Cultural Centre next year.

"I have had over 20 messages saying they want to watch me be burnt alive, screaming in pain and that I deserved the bullet not the roo," Ms Byrnes said.

"I haven't written back to any of them."

Animal activism Facebook page A Letter a week, posted photos Saturday night of Ms Byrnes posing with dead piglets killed during a pig hunt in 2010.

"Just to be clear the photo here were taken from the "model" Katrina Byrnes' Facebook page. This is the reality of pigging," A Letter a week posted on its page.

"The story that prompted the outrage and revulsion appeared in the Daily Liberal," it said.

Dozens of abusive and threatening comments were written after the photos were posted on the A Letter a week Facebook page.

"Skanks seems a fitting name. I would like to rip the smile off her face with a cheese grater. Nice and slowly," Carol Cornish posted.

"Her profile is open again but I'm unable to see her pics, I got to view all her vile trophy pics last night , the bitch needs a bullet ... feel free to send her a message though !," Amanda Allen posted.

"People who enjoy killing are mentally sick and should be put down so they can't breed more cruel skanks like them selves. Note the grog in this young girl's hands. I wish the same cruelty for them," Kay Cornish Smith posted.

Orana Local Area Command (LAC) duty officer Inspector Brad Johnston said that there were laws with severe penalties for those who threatened harm under the Commonwealth Crimes Act.

Using a carriage service to threaten others has the maximum jail sentence of seven years.