Journal of Dali University ›› 2023, Vol. 8 ›› Issue (12): 50-57.

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Analysis and Comparison of Biological Indices and Muscle Nutritional Value of Two Artificial Farming Schizothorax Fish Species 

  

  1. (1. College of Agriculture and Biology Science, Dali University, Dali, Yunnan 671003, China; 2. Dali Plateau Aquatic Resources Breeding Farm, Dali, Yunnan 671003, China)
  • Received:2023-03-28 Online:2023-12-15 Published:2024-01-07

Abstract: To understand the biological indices and muscle nutritional value of the artificial farming Schizothorax lissolabiatus and S. griseus, 5 individuals of 2-year-old S. lissolabiatus and S. griseus with similar body weights were collected under the same breeding environment. The biological indices and muscle nutritional quality were analyzed and compared by using conventional biochemical analysis methods. Results:(1) There were no significant differences in the biological indices between two Schizothorax fish species(P>0.05). (2) The protein content in the muscles of the S. lissolabiatus and the S. griseus were 19.36% and 19.09%, respectively. (3) The highly unsaturated fatty acid content in the muscles of both Schizothorax fish species was highest in docosahexaenoic acid. The content of polyunsaturated fatty acids and the ratio of polyunsaturated fatty acids to saturated fatty acids in the muscles of S. lissolabiatus were significantly higher than those in S. griseus, with statistical significance(P<0.05). (4) The content of alanine in the muscles of S. lissolabiatus was significantly higher than that in S. giseus, with statistical significance(P<0.05). The essential amino acid score and its average value in the muscles of S. lissolabiatus were higher than those in S. giseus. In conclusion, the muscle nutritional value of 2-year-old artificial farming S. lissolabiatusis better than that of S. giseus. 

Key words: artificial farming; Schizothorax lissolabiatus; Schizothorax griseus;biological indices; nutritional value 

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