This data set represents the average feed digestibility (or net energy content) expressed as percentage of the total ration for dairy and non-dairy cattle herds across different production systems. A raster layer containing the surface area of each cell within the thematic map is also available for download as ancillary dataset. Source: GLEAM

This data set represents the percentage of total nitrogen present in the feed ration which is retained in the products (milk in this case). A raster layer containing the surface area of each cell within the thematic map is also available for download as ancillary dataset. Source: GLEAM