XIE Dizhi1
1. Guangdong Provincial Key Laboratory of Marine Biotechnology, Marine Biology Institute, Shantou University, Shantou 515063, China; 2. College of Fisheries, Henan Normal University, Xinxiang 453007, China; 3. Guangdong VTR Bio-tech Co., Ltd., Zhuhai 51902
1. Guangdong Provincial Key Laboratory of Marine Biotechnology, Marine Biology Institute, Shantou University, Shantou 515063, China; 2. College of Fisheries, Henan Normal University, Xinxiang 453007, China; 3. Guangdong VTR Bio-tech Co., Ltd., Zhuhai 5190XU Shude1
1. Guangdong Provincial Key Laboratory of Marine Biotechnology, Marine Biology Institute, Shantou University, Shantou 515063, China; 2. College of Fisheries, Henan Normal University, Xinxiang 453007, China; 3. Guangdong VTR Bio-tech Co., Ltd., Zhuhai 51903
1. Guangdong Provincial Key Laboratory of Marine Biotechnology, Marine Biology Institute, Shantou University, Shantou 515063, China; 2. College of Fisheries, Henan Normal University, Xinxiang 453007, China; 3. Guangdong VTR Bio-tech Co., Ltd., Zhuhai 5190CHEN Fang1
1. Guangdong Provincial Key Laboratory of Marine Biotechnology, Marine Biology Institute, Shantou University, Shantou 515063, China; 2. College of Fisheries, Henan Normal University, Xinxiang 453007, China; 3. Guangdong VTR Bio-tech Co., Ltd., Zhuhai 5190WANG Shuqi1
1. Guangdong Provincial Key Laboratory of Marine Biotechnology, Marine Biology Institute, Shantou University, Shantou 515063, China; 2. College of Fisheries, Henan Normal University, Xinxiang 453007, China; 3. Guangdong VTR Bio-tech Co., Ltd., Zhuhai 5190YOU Cuihong1
1. Guangdong Provincial Key Laboratory of Marine Biotechnology, Marine Biology Institute, Shantou University, Shantou 515063, China; 2. College of Fisheries, Henan Normal University, Xinxiang 453007, China; 3. Guangdong VTR Bio-tech Co., Ltd., Zhuhai 5190LI Yuanyou1
1. Guangdong Provincial Key Laboratory of Marine Biotechnology, Marine Biology Institute, Shantou University, Shantou 515063, China; 2. College of Fisheries, Henan Normal University, Xinxiang 453007, China; 3. Guangdong VTR Bio-tech Co., Ltd., Zhuhai 51901. Guangdong Provincial Key Laboratory of Marine Biotechnology, Marine Biology Institute, Shantou University, Shantou 515063, China; 2. College of Fisheries, Henan Normal University, Xinxiang 453007, China; 3. Guangdong VTR Bio-tech Co., Ltd., Zhuhai 5190
S963
To explore the relationship between osmoregulation and long-chain polyunsaturated fatty acid(LC-PUFA) biosynthesis in rabbitfish (), an 8-week feeding trial was performed in juvenilerabbitfish with diets that contained fish oil (FO) or a blend of vegetable oils (VO; perilla and canola oils) at threesalinities: 10, 20, and 32. The growth performance, fatty acid composition of gill phospholipids, and activity andexpression levels of gill NaATPase (NKA) under different treatments were analyzed. The results showed that,at the same salinity, there was no effect of dietary lipid source on growth performance (0.05), whereas n-3LC-PUFA content in gill phospholipids in the FO dietary groups was significantly higher than those in VO treatments(0.05). In particular, although the contents of n-6 LC-PUFA in VO-fed fish were lower than in FO-fedfish, the opposite was observed for n-6 LC-PUFA contents. Furthermore, the activity and mRNA expression levelsof gill NKA in VO groups were significantly higher than those in FO groups (0.05). Under different salinities,the growth indexes at a salinity of 10 were significantly lower than those at salinities of 20 and 32 in both dietarygroups (0.05), whereas the LC-PUFA contents, and activity and mRNA expression levels of NKA in fish fedVO were significantly higher than that in fish fed VO (0.05). In addition, there were no significant differencesin either of the higher two salinities treatments (0.05). The results indicate that a salinity of 10 may not suitablefor rabbitfish culture. Furthermore, FO-derived diets can improve n-3 LC-PUFA content in gill phospholipids,which helps maintain membrane lipid fluidity and osmotic balance. Alternatively, VO-derived diets can regulateosmotic pressure by synthesizing n-6 LC-PUFA to up-regulate NKA expression and activity.
谢帝芝,徐树德,陈芳,王树启,游翠红,李远友. 黄斑蓝子鱼LC-PUFA 合成代谢与渗透压调节的关系研究[J]. Jounal of Fishery Sciences of China, 2015,[volume_no](5):950-959
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