Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2020, Vol. 36 ›› Issue (8): 139-144.doi: 10.11924/j.issn.1000-6850.casb19020034

Special Issue: 水产渔业

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Muscle Nutritional Components in Four Hybrid Offspring of Oreochromis niloticus× O. aureus: A Comparative Analysis

Xiao Wei, Li Dayu, Zhu Lin, Zou Zhiying, Yu Jie, Yang Hong()   

  1. Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi Jiangsu 214081
  • Received:2019-02-21 Revised:2019-04-15 Online:2020-03-15 Published:2020-03-10
  • Contact: Hong Yang E-mail:yanghong@ffrc.cn

Abstract:

To investigate the effects of different parental genetic backgrounds on the muscle nutrients of hybrid tilapia (Oreochromis niloticus× O. aureus), we compared the muscle nutrient composition differences among four varieties of hybrid tilapia. The contents of nutritional components, amino acid and fatty acid were analyzed by common methods. The results showed that the moisture content of the four varieties of hybrid tilapia was 79.19%-79.82%, the crude protein content was 17.44%-18.03%, the crude lipid content was 2.13%-2.25%, and the ash content was 0.90%-0.99%, respectively. There was no significant difference among the varieties (P > 0.05) in the above four nutritional components. The total amounts of essential amino acids (EAA) and non-essential amino acids (NEAA) were similar among different varieties of hybrid tilapia, but the contents of arginine, phenylalanine, threonine and alanine were significantly affected by the parental genetic backgrounds (P< 0.05). There was no significant difference in the total amount of saturated fatty acids (SFA) among the hybrid varieties (P > 0.05). However, the total amounts of monounsaturated fatty acids (MUFA) and polyunsaturated fatty acids (PUFA) were significantly influenced by female parents (P < 0.05). The present results could clarify the effect of parental selection on muscle nutrient composition difference in hybrid tilapia varieties, and provide technical assistance in obtaining hybrid tilapia fry of better muscle quality.

Key words: hybrid tilapia, nutritional components, amino acid, fatty acid, parental selection

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