Protein percentage in organic field corn?

I was at the feed store today and the manager was loading up my chicken feed ingredients and she wondered to herself out loud about the protein levels of organic corn.  Modern inorganic corn has a pretty low protein level but how about the organic stuff that might be an older cultivar?  She thought corn used to be several % higher and maybe we can cut down on the legumes a bit to still hit our target %.

Anybody know?

I know that there are specialty high protein corns that they sell like 'Piper' dent corn that comes in about 12% protein.

I would expect the genetics would be a big part of it. I asked a buddy of mine why the grain dealers take all sorts of corn but can give an estimate on protein. He said it is because the seed the farmers use in the area are pretty much the same and will come around +/- 2% on the average protein number. Modern hybrid seed might be ore uniform but unfortunately suffer from less protein than the corn seed of the past.

I'm growing a few acres of various flint corns this upcoming season in order to select and breed varieties suitable for my farming goals.  Producing a higher protein feed corn for myself and my chickens was one of many initial motivators, now I'm also mindful of the higher anthocyanin content in some varieties.  

Some corn from this study had 13% protein content.  Along with many other varieties, Abenaki aka Roy's Calais flint is one corn suitable for my region of Maine zone 5 that I will focus on preserving and improving.  I plan on crossing a variety of ''old world'' flint corn with some more modern types that are more suitable for mechanical farming and hope to develop my own lines.  

Hi,
you may also be interested in the quality protein maize. These are maize varieties which were selectively bred to produce more of two limiting amino acids. If the protein is more balanced, you need less of it.

https://en.wikipedia.org/wiki/Quality_Protein_Maize

That’s an interesting question! Organic corn, especially if it's an older cultivar, can sometimes have a slightly higher nutrient profile, but the protein difference between organic and conventional corn isn’t usually that significant. Modern corn varieties, whether organic or inorganic, tend to hover around the same protein levels—usually in the range of 6-9%. It could be worth looking into specific organic seed varieties though, as some farmers do grow corn with different nutrient profiles. I often use barley grass powder together with corn to keep the amount of vitamins in the norm

Reading about QPM was interesting. Because of that, I just ordered some of this to add to next year's grex: https://victoryseeds.com/products/homestead-hero-flour-corn