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Feed Supplement Reduces Dairy Cow Methane Emissions

Pennsylvania State University researchers published results of a study that evaluated feeding dairy cattle 3-Nitrooxypropanol as a supplement. Feeding the 3-NOP supplement to cattle reduced their enteric methane emissions by 26% without adversely impacting lactational performance or sensory properties of their milk. Researchers had previously tested essential oils, oregano, and seaweeds as means of reducing enteric methane emissions, but these supplements either proved ineffective in the long term or required further research. 3-NOP is a synthetic molecule that is expected to be affordable for farmers to use.