FAO (2005). Global Livestock Distributions. Data Archive produced  by Environmental Research Group Oxford Ltd for the Food and  Agriculture Organisation of the United Nations, Rome.
Year 2000 Corrected Predictions 5km resolution

Unsuitable for Monogastrics        Pigs  
     Unsuitable   <1    20-50
         1-5    50-100
         5-10    100-250
         10-20    250+
       All densities are in heads per km2