Is another answer to simply scale back the use of livestock in general by reducing demand in the developed world while stopping demand before it starts in developing countries?
The livestock revolution is demand-driven. As consumers become more urbanized and their incomes grow, as they have in much of Asia and Latin America, their demand for animal products grows markedly. We expect that the developing world will double their consumption of animal products in the next 20 years. Livestock production growth to meet the growing market demand has to rely on the same or shrinking land, water and other natural resources. What we need are dramatic productivity increases. Policies will play a key role in shaping what happens in different parts of the world. If polices enforce more environmentally neutral production systems, this could lead to higher prices, particularly in the developed countries, which use intensive systems heavily reliant on external inputs and energy.
