Pāmu is measuring methane from cattle, with animals spending about 56 days having their feed intake recorded.

Fern Energy chief executive Chris Gourley says crude oil has lifted 20% to about $85 a barrel in two days.

Feds banking spokesperson Mark Hooper says ag debt fell $1.44 billion, at least $1 billion more than the usual seasonal drop.

Hunters now have a formal role in managing Fiordland's wapiti numbers, becoming New Zealand's first Herd of Special Interest.