nutrient compositional differentiation in the muscle of wild, inshore and offshore cage-cultured large yellow croaker (pseudosciaena crocea)

The proximate composition, amino acids and fatty acids composition in the muscle of wild, inshore and offshore cagecultured large yellow croaker, pseudosciaena crocea (richardson, 1846), were determined to identify nutritional differences. wild fish groups showed highest content of moisture and crude protein, but the lowest lipid content. offshore cagecultured fish showed significantly higher content of moisture and crude protein content, but lower crude lipid content than inshore cagecultured fish. the content of aspartic acid, glutamic acid, and alanine was higher in wild large yellow croaker than inshore cagecultured groups, but similar to offshore cagecultured fish. significant lower contents of total amino acids, essential amino acids, nonessential amino acids and flavorenhancing amino acids content were recorded in two cultured fish groups than those in wild group. while no major differences in fatty acids composition were found between wild and cagecultured groups except for linoleic acid. the fish from offshore cages has much better nutrient profile than inshore cagecultured fish, but was still inferior compared to wild fish.