Expansion: One salmon weighs about 0.8kg. Salmon of this weight has the best meat quality. The mass fractions of water, ash, crude protein and crude fat in muscle of cultured salmon and NW salmon are 62.10%,1.92%, 21.01%,14.94% and 69.0/respectively. Both salmon muscles contain 18 kinds of amino acids, total amino acid content and 8 kinds of essential amino acids.