No matter fly maggots, pupae or adults, they are rich in nutrients. Fly maggot dry powder contains 60%-65% crude protein and 17 kinds of amino acids needed by animals, and the content of each amino acid is higher than that of fish meal, for example, the content of methionine is 2.7 times that of fish meal and the content of lysine is 2.6 times that of fish meal. The fat content of fly maggot dry powder is about 12- 18%, which is lower than that of ordinary animal food and higher than that of ordinary plant food. The contents of unsaturated fatty acids and essential fatty acids in fatty acids are relatively high, which are 68.2% and 36% respectively, and their composition ratios are close to those of vegetable oil and fish oil. At the same time, the content of fat-soluble vitamins A and D in fly maggot dry powder is very rich, and the content of water-soluble vitamins B is also very rich, especially vitamins B2 and B6 lacking in cereals. In terms of minerals, fly maggot dry powder contains many macro elements such as potassium, sodium, calcium and magnesium, and trace elements such as iron, zinc, manganese, phosphorus, cobalt, chromium, nickel and boron.

In Guangdong, some aquaculture farmers use fly maggots as feed to raise fish and shrimp, and the effect is particularly good. In Wuhua District, Meizhou City, Guangdong Province, someone raised chickens with fly maggots, and it was found that chickens grew very fast and the chicken was very fragrant. Because there is no need to add anything else to feed the maggots, the fish, shrimp and chicken raised are not only healthy, but also very safe to eat.