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Effects of body weight on the growth and physiology of Salmo salar L. during smoltification
Zhang Mo1; Gao Xiaolong1,2; Li Xian1; Liu Ying3
2017-05-01
Source PublicationAQUACULTURE RESEARCH
Volume48Issue:5Pages:2303-2315
SubtypeArticle
AbstractTo study the effects of body weight on growth and physiological response mechanism of S.salar, fish of three average body weights were selected: 30.25 +/- 2.12g (SW1), 24.27 +/- 1.59g (SW2) and 18.05 +/- 2.46g (SW3). Condition factor, daily weight gain and feed conversion efficiency were significantly higher in the SW2 group compared with the other treatment groups (P<0.05). Food conversion ratio decreased with increasing body weight, and weight and specific growth rate of body length were highest in the SW2 group (P<0.05). Larger fish (SW1 and SW2) had higher haemoglobin concentration and number of red blood cells. The number of white blood cells, lymphocytes and neutrophils were greatest in the SW3 group (P<0.05), suggesting that these fish had strong resistance to disease. The content of total protein, albumin and urea were significantly higher in the SW2 group compared with other groups (P<0.05). The concentration of total cholesterol and triglyceride increased with increasing body size (P<0.05). Hormone (T3 and T4) levels first increased significantly and then decreased in fish of various sizes (P<0.05), and the concentration of cortisol rose, fell and then rose again in SW1 and SW2 groups. Light affected the endocrine activity of S.salar by influencing the growth performance of the fish, and smaller sized fish exhibited decreased smoltification rate and a reduced success rate of smoltification. Based on these findings, S.salar weighing about 24g were chosen to begin the process of smoltification.
KeywordSalmo Salar l Smoltification Body Weight Growth Index Physiological And Biochemical Index Hormone Indexes
DOI10.1111/are.13066
Indexed BySCI
Language英语
WOS IDWOS:000398859900030
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/136704
Collection海洋生物技术研发中心
Affiliation1.Chinese Acad Sci, Inst Oceanol, Qingdao, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Dalian Ocean Univ, Dalian, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhang Mo,Gao Xiaolong,Li Xian,et al. Effects of body weight on the growth and physiology of Salmo salar L. during smoltification[J]. AQUACULTURE RESEARCH,2017,48(5):2303-2315.
APA Zhang Mo,Gao Xiaolong,Li Xian,&Liu Ying.(2017).Effects of body weight on the growth and physiology of Salmo salar L. during smoltification.AQUACULTURE RESEARCH,48(5),2303-2315.
MLA Zhang Mo,et al."Effects of body weight on the growth and physiology of Salmo salar L. during smoltification".AQUACULTURE RESEARCH 48.5(2017):2303-2315.
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