There are many types of buffer, generally most of the buffe is sodium bicarbonate (baking soda), other is sodium carbonate (food base) , but higher than 30 kg daily milk yields of high-yield dairy cows also need to plus magnesium oxide, or swelling Run soil and so on will be fine.
Amount of addition of various buffers:
1, sodium bicarbonate: total dietary dry matter intake of 0.7% to 1.5%, or 1.4% of total concentrate feed to 3.0%.
2, MgO: total dietary dry matter intake of 0.3% to 0.4%, or 0.6% of total concentrate feed ~ 0.8%.
3, Bentonite: total dietary dry matter intake of 0.6% to 0.8%, or 1.2% of total concentrate feed ~ 1.6%.
4, sodium bicarbonate and magnesium oxide mix better, the mixture of concentrated feed dairy cows account for about 0.8% (70% mixture of sodium bicarbonate, magnesium oxide, 30%).