http://scripts.farmradio.fm/radio-resource-packs/package-89/breeding-cows-in-a-zero-grazing-system-can-be-a-dual-environmental-solution/
So turns out that Rwanda has been discouraging traditional cattle grazing in favor of intensive factory farming because "climate change".
Basically, trading off a bit of methane emissions - which are _not_ a permanent problem - for increased long-term, permanent, emissions from all the industrial infrastructure required for intensive farming.
This smells more like corporate corruption than environmentalism...