It is not specific nor carefully calculated. The title of the article I wrote about it is 'Wholesome homemade feed *without* sweat, tears, *a calculator* or deep pockets', and I emphasize throughout the importance of variety, seasonality, and locality, and adjusting based on how the flock responds, rather than on any theory or calculus.
This, apparently the polar opposite of carefully calculated and specific, is not the only alternative. Most sensible feeding regimes lay between the extremes, not at them.
