Celebrated for their story of resilience, the Parberys have achieved intergenerational success and managed to thrive in the face of adversity.

NAB Agribusiness customer executive Neil Findlay said the 2020 calendar is dedicated to the many faces and families of agribusiness.

"Today's tough times are throwing multiple challenges at many agribusinesses," Mr Findlay said.

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"Each month, the calendar highlights businesses that have outsmarted adversity, built strong business foundations through the generations or remained successful by developing new strategies to meet changing demands and challenges.

"One thing many have in common is a belief that doing things as a family, often over the generations, is the key to agribusiness progress and longevity."

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The Parbery family has milked cows in NSW's Bega Valley for nearly 100 years, with fourth-generation Gavin recently raising milk production to over six million litres a year.

Things changed when deregulation saw milk prices crash in 2002 and the Parberys had to rethink their expansion strategy.

"We closed two dairies and went down to 450 cows but also spent a lot of money in the right areas to stay relevant," Gavin said.

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The gamble paid off and today Parbery Pastoral still sells all its milk to Bega Cheese.

With his son Hayden learning the ropes, Gavin is very clear about his next role.

"I had a great teacher in Dad. It's now my job to pass that knowledge on to Hayden."