Adding pink seaweed to the diet of cows could decrease their methane production by as much as 99 percent.
The pink seaweed Asparagopsis was determined five years ago to be the only seaweed that will decrease cow methane production. Armed with that knowledge, a team from the University of the Sunshine Coast has been working on ways to grow the seaweed sustainably, moving the project from the smaller lab environment to larger, outdoor tanks. The team also hopes to maximize the methane-reducing compounds in the seaweed to increase its efficiency.
According to Associate Professor Nicholas Paul, the pink seaweed diet could reduce Australia’s greenhouse gas emission by as much as ten percent.