I have applied my second round of chicken fertilizer this week.
I also researched the chemical ingredients of chicken manure. Chicken manure is the active ingredient in Medina's Growin Green Lawn Fertilizer which sells at this site's Natural Organic Warehouse for $23.87/40lb bag or $15.00/lb of Nitrogen.
My Chicken feed was $11.50/50lb bag or $5.75/lb of Nitrogen.
Salt content in feed:http://www.aces.edu/pubs/docs/A/ANR-0244/
This site above indicated chicken manure has up to 0.25% sodium in the wet form so dried would contain even higher contents. My chicken feed is at 0.2% sodium.
Medina advertises its fertilizer is "Low salt index" without giving a value. Interesting!
One other concern expressed in this forum is the "other" ingredients in chicken feed. These are critical vitamins and minerals a chicken needs and is also needed for all living organisms including all those living in our soils. I can guarantee you when a chicken eats this feed he does not utilize 100% of these ingredients and the remaining unused are excreted in the manure that is then processed and sold at overpriced rates. Just because chicken manure based fertilizer is not legally required to list ingredients or composition does not mean it does not contain every ingredient that the chicken has consumed in the feed. Refer back to the article above to see the trace minerals present, similar to the chicken feed because that is where they are coming from.
The bottom line is why wait for the chicken to pass the feed through his body before we pay for it when we can use the feed at almost 1/3 the manure based fertilizer price??
By the way, the manure based fertilizer has to be heated to be Pasteurized so now you are adding pollution and using energy to produce this compared to chicken feed!