Poor suffering farmers - yeah right...

[harm_less]

  Oh gee - I dunno...are people 'happy' not having a planet which is livable any more.

Well animals are nature, the earth looks after animals, whether they are farmed or not. The carbon methane cycle has been on this planet since forever.
Lets address more important issues such as fertilizer, and nitrates etc rather than the actual animals itself.
There is a reason the Paris agreement prohibits policies that affect food production.
Dont let the likes of TESCO hold us to ransom over stupid policies, they will still buy our meat, our grass fed beef and lamb is probably the most environmental and nutritious beef on the planet.

NZ may have production methods that are less environmentally damaging than other farming countries but we are as remote from most of our potential markets than any country can be so we will always be 'behind the eight ball' in terms of food miles and therefore our advantage will be severely diluted due to that. As the effects of a warming climate make themselves more obvious so will the attitudes of many of our customers harden in respect to their choice of food production and transportation.