Growing Maggot for Animal Feed: My Little Experiment

[Henlus]

This is a gold mine if scaled up. Imagine replacing 50% of chicken feed with homegrown maggots. Feed is 70% of production cost. This can turn losses into profit.

Maggots cannot fully replace complete formulated feed for chickens. They are very rich in protein and fat, but low in energy, calcium, some vitamins, and certain amino acids (like methionine and lysine, depending on the substrate they’re raised on).
Broilers:
You can safely replace 10–30% of commercial feed with dried BSF larvae meal without negative effects on growth.
Some trials even report up to 40–50% replacement when diets are carefully balanced with extra energy and calcium.

Layers:
Replacement levels are usually 5–20% to avoid drops in egg production or shell quality.
Higher levels can affect egg size and yolk composition if not balanced.

Local/Free-range chickens:
They tolerate higher inclusion rates, sometimes up to 50% of protein sources, especially if they scavenge for extra energy.

Fresh vs. Dried Maggots
Fresh BSF larvae: fed as a protein-rich supplement (like a snack), but they’re mostly water.

Dried/processed BSF larvae: used in formulated rations, where replacement percentages are calculated on dry matter.