The wonderfully named Gridded Livestock of the World (GLW) is an initiative of the FAO’s Animal Production and Health Division to map the distribution of the principal livestock species across the world.
The GLW map of global pig population densities makes an interesting comparison with the 1922 map of world hog production (noted in The Tracing Paper’s recent round-up of food maps):
The distribution (production levels are another matter) is remarkably consistent: the most striking difference being India, which had virtually no pigs in 1922, but widespread moderate population density in 2005.
(Thanks to the Agricultural Biodiversity Weblog for leading me to GLW via GLiPHA)
