Top breeding stock in the beef cattle industry will be on display and up for sale at the Beef Expo in Feilding over the next two days.
The expo, now in its 23rd year, marks the start of the bull selling season.
Bulls from seven beef breeds will be judged on Monday, and the champion of champions named, before going up for auction on Tuesday.
The Queen of Hearts heifer sale and show is also on Monday.
And the country's best steak will be named after final judging on Monday night in the Steak of Origin contest, that's been running for 10 years.