Putting cattle on a diet to curb climate change

Are cattle part of the problem of global warming? The problem occurs because as livestock digest their food they produce methane gas as a by-product; around 250 to 500 liters a day according to a Washington State University study. The methane gas that is being produce from the livestock will warm the Earth 20 times fast than CO2. One way to slow list process up is to stop eating meat or to eat less of it.
It is still in the early stages, but adding a dietary additive to a cow diet will reduce methane from cows. This additive has been seen to be working across the world and has a cost benefit to farmers in terms of improved nutrition and higher yields. Cutting methane gas mean more efficient and profitable farms.

http://www.cnn.com/2009/TECH/science/09/11/cow.methane.power/index.html