The specific formula of fish feed depends on the specific species, but the main ingredients are vitamins, trace amounts, protein and minerals. Among them, 15% carp formula bean cake, 30% fish meal, 10% barley, 43% bran, and 2% additives. For example,a common grass carp feed formula is 80% straw powder, 10% soybean cake, and feed coefficient 4.9.

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