Someone asked about BSF...
I use about 120 lbs of BSF per dry ton of feed.
BSF is about 49% protein... ideally I'd like it to be about 30% of their ration in the winter, but growing that many for consistent year round use for the amount of poultry I have is tough, so about 6 lbs per 50 lb batch is my ideal.
So about 12% of their ration is BSF.
That allows me to raise enough to feed "some" in the spring and fall, and a lot more in the winter.
I don't feed BSF in the summer - course I don't feed much in the summer at all.
I offer it, but they only eat about 1/4 in the summer what they do in the winter.
They simply have enough forage and bugs.
Aside - It takes about 2525 mature BSF larvae to make a lb.
IF I don't have 6 lbs/batch (or the daily equivalent depending on the number of birds I am feeding), then I supplement with meat and bone meal (which I'm sure varies but when mine was analyzed it was 50% protein). I have never gone beyond 8% of my total ration on fish meal back years ago when I was feeding it, but normally tried to keep it at about 4%... mostly because it was expensive.
With BSF being free and meat/bone meal costing me nothing but the processing, I haven't used fish meal in years.