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Effects of flow velocity on growth, food intake, body composition, and related gene expression of Haliotis discus hannai Ino
Gao Xiaolong1,2; Li Xian1; Zhang Mo1; Wu Fucun1; Shi Ce3; Liu Ying2
2017-12-01
Source PublicationAQUACULTURE
Volume481Pages:48-57
SubtypeArticle
AbstractThis study investigated the effects of different flow velocities in a circulating aquaculture system on growth, food intake, and related gene expression of the abalone Haliotis discus hannai Ino. Abalones (shell length: 41.39 +/- 2.85 mm, body weight: 8.19 +/- 0.66 g) were cultured at three flow velocities; high-velocity (400 L/h), medium-velocity (300 L/h), and low-velocity (200 L/h) during the course of the experiment. Four repeats of each flow velocity were conducted over an experimental cycle of 90 days. Results showed that the survival and specific growth rate of abalones in the 200 L/h group were significantly lower than in any other group at the end of the experiment, while total ammonia nitrogen and NO2-N concentration in the water was significantly higher than that in any other group (P < 0.05). Food intake, food conversion efficiency, protein content, pepsin, and a-amylase activity of abalones in the 300 L/h group were significantly higher than in the 200 and 400 L/h groups (P < 0.05), but there was no significant difference identified between 200 and 400 L/h groups (P > 0.05). Although no significant difference was identified between 300 and 400 L/h groups with respect to cellulase activity or the expression levels of Hdaly, both were significantly higher than in the 200 L/h group (P < 0.05). In the 400 L/h group, hexokinase and pyruvate kinase activity, and lactic acid content were significantly higher compared with in the 300 L/h group (P < 0.05). The ash and fat contents of abalones in the 200 L/h group were significantly lower than in any other group, but moisture content was significantly higher (P < 0.05). At Day 90, the expression levels of Hdamyl, Hdlam, and Hdcel in the 300 L/h group were significantly higher than in any other group (P < 0.05), and compared with Day 45, the expression levels of were Hdamyl significantly increased (P < 0.05). Although no significant difference was identified between 200 and 400 L/h groups with respect to the expression levels of Mn-SOD and CAT, both were significantly higher than those in the 300 L/h group (P < 0.05). Therefore, control of flow velocity at 300 L/h will not only stimulate the food intake and growth of abalones, but also reduce energy consumption to resist against water flow impact and avoid oxidative damage due to water quality deterioration. This will be beneficial for abalone health and will improve aquaculture production.
KeywordHaliotis Discus Hannai Ino Flow Velocity Digestive Enzyme Activity Body Composition Gene Expression
DOI10.1016/j.aquaculture.2017.08.023
Indexed BySCI
Language英语
WOS IDWOS:000411453300006
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/143214
Collection实验海洋生物学重点实验室
Affiliation1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
2.Dalian Ocean Univ, Dalian 116023, Peoples R China
3.Ningbo Univ, Ningbo 315211, Zhejiang, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Gao Xiaolong,Li Xian,Zhang Mo,et al. Effects of flow velocity on growth, food intake, body composition, and related gene expression of Haliotis discus hannai Ino[J]. AQUACULTURE,2017,481:48-57.
APA Gao Xiaolong,Li Xian,Zhang Mo,Wu Fucun,Shi Ce,&Liu Ying.(2017).Effects of flow velocity on growth, food intake, body composition, and related gene expression of Haliotis discus hannai Ino.AQUACULTURE,481,48-57.
MLA Gao Xiaolong,et al."Effects of flow velocity on growth, food intake, body composition, and related gene expression of Haliotis discus hannai Ino".AQUACULTURE 481(2017):48-57.
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