A new study suggests allowing more dairy calves to grow up on beef farms could reduce up to 1.95 million tonnes of carbon emissions in New Zealand, equivalent to about 5% of total emissions created by the agriculture sector each year. Beef farms could use calves from dairy farms to raise for meat, and would no longer need to maintain the herd of breeding cows, which in turn would save emissions. The research co-author Stewart Ledgard says the emission saving is on par with what farmers might achieve from the long-awaited methane vaccine.

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