Companies developing vaccines that inhibit methane (CH4) production in cattle are facing challenges, say experts, and in the process finding their development is more complex than first thought.

Developers struggle with complexities of cattle rumen, logistics of cattle on pasture and lack of incentives for Canadian producers
The Nordic country has pledged to reduce emissions by 70 per cent by 2030 compared to 1990 levels.
Enteric methane emissions from cattle contributes 3.3 per cent of Canada’s total GHG emissions