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Cyclical fasting and refeeding is not an advisable feeding strategy for white shrimp (Penaeus vannamei)

文献类型：期刊论文

作者Shao, Jian-Chun1,2; Zhu, Wan-Qing1; Liu, Mei2; Wang, Lei2; Zhao, Wei2,3
刊名AQUACULTURE REPORTS
出版日期2020-11-01
卷号18页码:5
ISSN号2352-5134
关键词Penaeus vannamei Feeding strategy Growth performance mTOR signaling pathway Compensatory growth
DOI10.1016/j.aqrep.2020.100429
通讯作者Wang, Lei(leiwang@qdio.ac.cn) ; Zhao, Wei(zwtjnxysc@163.com)
英文摘要This study investigated the effects of cyclical fasting and refeeding on growth performance, digestibility, muscle composition and mTOR signaling pathway of Penaeus vannamei. Three feeding strategies were designed: feeding everyday of a week (control); fasting one day and refeeding six days of a week (F1), fasting two days and refeeding five days of a week (F2). Shrimp with initial body weight of 6.52 +/- 0.46 g was used for feeding strategy experiments. The stocking density was 20 shrimps (130.4 g biomass) per 100 L seawater. There were no significant differences in growth performance (final weight, weight gain and specific growth ratio), muscle composition (moisture, crude protein, crude lipid and ash contents) and digestive enzyme activity (trypsin, alpha-amylase and lipase) among three treatments (P 0.05). However, survival rate of control treatment was significantly higher than that of F1 and F2 treatments (P < 0.05). Feed efficiency (FE) of shrimp in F1 and F2 treatments were higher than that of shrimp in control treatments. The expression level of trypsin in F1 and F2 treatments were significantly up-regulated than that of control treatment (P < 0.05). Both tor and s6k expression levels of F1 and F2 treatments were up-regulated than those of control treatment. These results suggest that the compensatory growth response of shrimp caused by starvation and refeeding may be attributed to the high feed efficiency after starvation and refeeding or the cannibalism caused by starvation, which provides a better source of protein for shrimp and promotes the growth performance of shrimp. However, considering the low survival rate, cyclical fasting and refeeding is not an advisable feeding strategy for P. vannamei.
资助项目National Key Research and Development Program of China[2019YFD0900401] ; China Agriculture Research System[CARS-47]
WOS研究方向Fisheries
语种英语
出版者ELSEVIER
WOS记录号WOS:000603386600009
源URL[http://ir.qdio.ac.cn/handle/337002/169880]  
专题海洋研究所_实验海洋生物学重点实验室
通讯作者Wang, Lei; Zhao, Wei
作者单位1.Fujian Agr & Forestry Univ, Inst Oceanol, Key Lab Marine Biotechnol Fujian Prov, Fuzhou 350002, Peoples R China
2.Chinese Acad Sci, Inst Oceanol, Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China
3.Jinan Univ, Inst Hydrobiol, Coll Life Sci & Technol, Guangzhou 510632, Peoples R China
推荐引用方式
GB/T 7714		 Shao, Jian-Chun,Zhu, Wan-Qing,Liu, Mei,et al. Cyclical fasting and refeeding is not an advisable feeding strategy for white shrimp (Penaeus vannamei)[J]. AQUACULTURE REPORTS,2020,18:5.
APA Shao, Jian-Chun,Zhu, Wan-Qing,Liu, Mei,Wang, Lei,&Zhao, Wei.(2020).Cyclical fasting and refeeding is not an advisable feeding strategy for white shrimp (Penaeus vannamei).AQUACULTURE REPORTS,18,5.
MLA Shao, Jian-Chun,et al."Cyclical fasting and refeeding is not an advisable feeding strategy for white shrimp (Penaeus vannamei)".AQUACULTURE REPORTS 18(2020):5.

入库方式： OAI收割

来源：海洋研究所

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