Effects of flow velocity on growth, food intake, body composition, and related gene expression of Haliotis discus hannai Ino

doi:10.1016/j.aquaculture.2017.08.023

CORC > 海洋研究所 > 中国科学院海洋研究所 > 实验海洋生物学重点实验室

	Effects of flow velocity on growth, food intake, body composition, and related gene expression of Haliotis discus hannai Ino
	Gao Xiaolong1,2 ; Li Xian 1; Zhang Mo 1; Wu Fucun 1; Shi Ce 3; Liu Ying2
刊名	AQUACULTURE
	2017-12-01
卷号	481 页码:48-57
关键词	Haliotis Discus Hannai Ino Flow Velocity Digestive Enzyme Activity Body Composition Gene Expression
DOI	10.1016/j.aquaculture.2017.08.023
文献子类	Article
英文摘要	This 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.
语种	英语
WOS记录号	WOS:000411453300006
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.qdio.ac.cn/handle/337002/143214]
专题	海洋研究所_实验海洋生物学重点实验室
作者单位	1.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
推荐引用方式 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.