Feed additives have emerged as the leading solution. Products based on red seaweed, essential oils and synthetic compounds such as 3-NOP are being used to reduce methane produced during digestion. Research in Australia has shown these technologies can cut methane emissions by anywhere from 25% to more than 90%, depending on the additive, feeding system and ration used.

The challenge for dairy producers is turning promising science into a workable on-farm strategy. Grazing systems dominate Australian milk production, making it harder to deliver feed additives consistently than in feedlot systems. For that reason, companies and researchers are developing products that can be added through milking rations, supplements or pellets, allowing dairy farms to reduce emissions without major changes to herd management.

Industry groups say methane reduction is becoming more attractive because it can deliver production benefits alongside lower emissions. Some trials have reported higher milk yields, improved feed efficiency and stronger animal performance when additives are used correctly. This means dairy businesses may be able to improve both sustainability metrics and farm profitability at the same time.