There is a solution for the cows, feed them lemongrass. It's healthier for them and reduces methane emissions considerably.
We could all improve our diets, including the animals we raise.
Likely those buffalo you mentioned had a far better diet. The artificial crap we consume isn't good for us as you can see an increase in various types of illnesses (cancer, autoimmune diseases, IBS, obesity, diabetes, food allergies, hyperactivity, etc.)