I can't help with the first part above but, for the second part, if it is high in fat - fat floats. If you aren't trying to get all the fat out, it shouldn't take expensive equipment to do enough for a backyard sized flock. If it doesn't drip out, a dunk in water might do it, then feed the...
What happens if you double or triple the fish?
It takes a lot of energy to dry food, the fat in the fish would make that more so. It might be more cost effective to use a higher percentage of fish if it gives more margin without getting too far out of the other target windows. Especially since...
Why are you drying it?
That is how nutritional profiles are figured because moisture level is so variable and easy to control. That isn't why you are drying it, is it?
I watched the video. Three hundred eggs from 600 hens. In May.
I get that he has some hens that are two, three, four, and five years old. Rule of thumb is to expect 15% drop in egg production for the first four or five years after the first year. Then ten percent. So his oldest hens should be...
Large scale farms store it in elevators or silos. The small scale farms usually buy it from people who stored it in elevators.
The old-timers stored it in corn cribs, granaries, or (more recently, last 50-60 years or so) in silos.
It is important to store it whole or ensiled it until you are...