Effects of different stocking densities on the growth performance and antioxidant capacity of Chinese mitten crab (Eriocheir sinensis) in rice crab culture system |
| |
Authors: | Wang Xin Yao Qi Lei Xin-yu Zhang Dong-ming Wang Sen Wan Ji-wu Liu Hong-jian Chen Yu-ke Zhao Yun-long Wang Gui-qin Wang Qiu-ju Guo Zhi-xin |
| |
Institution: | 1.Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science, Jilin Province, College of Animal Science and Technology, College of Life Science, Jilin Agricultural University, Changchun, 130118, China ;2.Tonghua Normal University, College of Life Science, Jilin, 134001, Tonghua, China ;3.Aquatic Product Technology Extension Station of Jilin Province, Changchun, 130012, China ; |
| |
Abstract: | This study assessed the effects of stocking density (D02, 0.2 individuals/m2; D03. 0.3 individuals/m2; D04, 0.4 individuals/m2; D05, 0.5 individuals/m2; D06, 0.6 individuals/m2) on Chinese mitten crab (Eriocheir sinensis; 6.25?±?0.11 g) growth performance, tissue indices, antioxidant enzyme activity (total superoxide, catalase, glutathione peroxidase, total antioxidant capacity, and malondialdehyde), and mRNA expression of antioxidant-related genes (SOD, CAT, GPx) in rice crab culture systems. Our results demonstrated that increasing stocking densities decreased the final weight (FBW), weight gain rate (WGR), specific growth rate (SGR), feed conversion efficiency (FCR), and protein efficiency ratio (PER) of the crabs. The hepatosomatic index (HSI) of female crabs in D04 group was higher than that of other groups. The gonadosomatic index (GSI) of the male crabs in the D04 group was significantly higher than that of the other groups(P?<?0.05). The meat yield (MY), total edible yield (TEY), and condition factor (CF) of the female and male crabs in the D04 group were higher than those of the other groups. The antioxidant enzyme activity (T-SOD, CAT, GSH-Px, and T-AOC) of male and female crabs in the D04 group was significantly higher than that of the other groups, and the MDA content of the D04 group was significantly lower than that of the other groups (P?<?0.05). The stocking density of 0.4 individuals/m2 effectively promoted the efficient mRNA expression of SOD, CAT, and GPx genes in the hepatopancreas of male and female crabs. In summary, the optimal stocking density of E. sinensis in the rice crab culture system is 0.4 individuals/m2. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|