Support had poured in from all corners, Mr Reinsfield said.
The New Zealand boxing community had rallied around MacKinnon, who had received numerous donation requests and messages of support from around the world.
A Facebook page "Dan MacKinnon - The Return of The King'' has also been set up to manage donation requests, Reinsfield said.
"We are inviting anyone who would like to support Dan's return to health by leaving messages or donations. A bank account has been provided on the Facebook page. The Westpac Bank have supported us and anyone who would like to make a donation can go to any Westpac Branch to donate to the `Dan Mackinnon Donation Account','' he said.
MacKinnon's opponent Robbie Berridge also wished him well.
"On behalf of Team Berridge, I would like to wish Daniel a speedy recovery and the best to him and his family,'' Berridge said.
"He is a true warrior and we are positive he will make a full recovery.''
MacKinnon was stopped by Berridge in the 10th round of the fight in which both boxers were knocked down.
He ended the fight on his feet when it was stopped by the referee, and was able to conduct a post-fight interview in the ring.
However, about 15 minutes after the fight he complained of head pains as he was preparing to take a shower, and was taken to the hospital.