Acta Agriculturae Zhejiangensis ›› 2024, Vol. 36 ›› Issue (2): 254-263.DOI: 10.3969/j.issn.1004-1524.20221043

• Animal Science • Previous Articles     Next Articles

Effects of stocking modes on growth traits and muscle nutritional composition of Macrobrachium nipponense

TANG Jinyu1,2(), QIN Baoli2, YE Jianyong2, DAI Yangxin3   

  1. 1. Institute of Hydrobiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
    2. Suqian Institute of Agricultural Sciences, Jiangsu Academy of Agricultural Sciences, Suqian 223800, China
    3. Institute of Fisheries Research, Hangzhou Academy of Agricultural Sciences, Hangzhou 310024, China
  • Received:2022-07-15 Online:2024-02-25 Published:2024-03-05

Abstract:

In the present study, 3 types of stocking modes were introduced as treatments, namely, T1, coculture of oriental river prawn (Macrobrachium nipponense) with Chinese mitten crab (Eriocheir sinensis) and some economic fish species; T2, coculture of M.nipponense with dark sleeper Odontobutis obscurus; T3, coculture of M.nipponense with bighead carp Aristichthys nobilis. Their influences on the growth traits and muscle nutritional composition of M. nipponense was evaluated. Results showed that the total length, carapace length, body length and wet weight of M. nipponense were significantly (P<0.05) different among treatments. The varations in contents of crude protein, crude lipid, ash and moisture in the muscle of M. nipponense were 16.54%-17.97%, 1.86%-2.25%, 0.95%-1.12% and 78.69%-80.56%, respectively, of which the ash content was significantly different. A total of 17 amino acids, including 7 essential amino acids were identified, and the essential amino acid index (EAAI) was 70.88-73.13. The contents of alanine were significantly different among treatments. A total of 16 fatty acids were found, and the fatty acid composition and the contents of C18:2 n-6 and polyunsaturated fatty acid were significantly affected by stocking modes. Nine mineral elements, including Na, K, Ca, Mg, Fe, Cu, Zn, Mn and Cr were monitored and the contents of Na, Mn, Fe, Zn were significantly different among treatments. These findings indicated that the alteration of food availability and environmental factors caused by stocking modes could affect the growth traits and muscle nutritional values. Thus, it is necessary to maintain these nutritive substances after changing the aquaculture modes. By comparison, it was concluded that coculture with Chinese mitten crab and some economic fish species could improve the delicious taste, nutritional value and healthcare values of the cultured prawn, which could be served as a promising mode in the further freshwater aquaculture practice.

Key words: Macrobrachium nipponense, stocking mode, growth traits, muscle nutritional composition, nutritional value

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