The NZRU has secured the signature of the country's No 1 hooker Andrew Hore and test rookies Anthony Boric and Adam Thomson.
The signings come just two days after the All Blacks were downed 34-19 by the Wallabies in Sydney, a match Hore started and Boric watched from the reserves bench.
Hore has re-signed until the end of the 2011 season while both Boric and Thomson have signed until the end of 2010.
"We are glad to have secured Andrew's experience and leadership and to see commitments from developing talents such as Anthony and Adam," NZRU general manager of professional rugby Neil Sorensen said.
"It's a credit to the work of all the provinces and academies that we continue to produce quality players and that they want to play their rugby in New Zealand."
Hore has also announced he will remain with the Taranaki province until the end of 2011.
Taranaki CEO Mark Robinson said the retention of the 30-year-old, who has now played 31 tests since his international debut in 2002 was a great coup for the province.
"It's fantastic that Andrew remains committed to Taranaki and and great for Taranaki people to identify with an All Black from the province," Robinson said.
"We look forward to welcoming him back in amber and black whenever the opportunity arises."
Boric and Thomson have made three and four test appearances respectively.
Meanwhile, the All Black selectors have called Hawke' Bay hooker Hikawera Elliot and Wellington halfback Piri Weepu into the All Black squad to cover for injuries this week.
Auckland halfback Taniela Moa is also likely to train with the team from Tuesday.
The pair have been called up after Hore suffered a hip pointer injury in the loss to the Wallabies.
Halfbacks Andy Ellis suffered bruised ribs and Jimmy Cowan suffered a knee injury and a broken nose in Sydney.
All Black management said the trio were still in contention for Saturday s test against the Wallabies at Eden Park.
Flanker Daniel Braid will stay with squad as Richie McCaw looks to recover from his ankle injury.
Kevin O'Neill will also stay in the group as cover for Ali Williams.
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