That is an interesting article, with the exception of the first two snotty paragraphs.
Why buy alfalfa pellets and grind them BACK into meal? Just buy the meal! It comes in 50# bags just like the pellets.
A comment on his observation: "...why am I spoon-feeding them basically non-food mineral supplements, however natural? I am experimenting with a gradual reduction of mineral supplementation, other than that of kelp and salt."
For close to 70 years, American farmers have blindly followed the chemical fertilizer salesmen's word that all their soils needed was NPK (nitrogen, phosphorus and potassium), totally ignoring all the other minerals. Almost every area in America has soil that is deficient in something: selenium, boron, sulfur, sodium, etc, etc. Some of these are trace minerals, only needed in minute amounts, but needed, nonetheless.
My point: if the soil is lacking in necessary minerals, the plants (grains, etc) grown on those soils will be lacking in the same minerals. You can't get blood from stones or minerals from wishful thinking. So, even if you are paying extra for organic grain, if the land on which those grains are grown are lacking in minerals, the grains will be, too. And grains are one of the main crops of the chemical farmers. If Mr. Ussery wants to eliminate minerals from his feed rations, one would hope that he has his soil tested first. The chances are excellent that it is short in quite a few minerals necessary to a chicken's health.
If you have some land and are interested in growing some of your own grains, and you happen to stumble upon Gene Logsdon's book Small-Scale Grain Raising at a yard sale, grab it. (It's out of print, and very expensive if you can find it online.)
Did you know that one bushel equals 32 dry quarts?
Did you know that you can grow quite a bit of grain on just 1/40th of an acre (10'x110')?
With reasonable care, you can grow the following amounts of grain on that small piece of land; a good grower can produce the higher amount. If you remineralized your soil for maximum nutritional density, you would be producing feed (or veggies for yourself) with nutrition superior to probably 98% of any you could buy in America.
Field corn: 2 to 4 bushels
Sweet corn: 1.3 to 2.6 bushels
Oats: 2 to 4 bushels
Barley: 1.3 to 2.6 bushels
Rye: 3/4 to 1.5 bushels
Buckwheat: .75 to 1.5 bushels
Grain sorghum: 2 to 4 bushels
Wheat: 1 to 2 bushels
Plus, you would have quite a bit of straw for bedding or the garden.
And, as gas prices go up, if you have the land, it may be more and more feasible to grow your own feed, or to supplement what you buy.
Sue