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

doi:10.1016/j.aqrep.2020.100429

IOCAS-IR > 实验海洋生物学重点实验室

	Cyclical fasting and refeeding is not an advisable feeding strategy for white shrimp (Penaeus vannamei)
	Shao, Jian-Chun 1,2; Zhu, Wan-Qing 1; Liu, Mei 2; Wang, Lei 2; Zhao, Wei 2,3
	2020-11-01
发表期刊	AQUACULTURE REPORTS
ISSN	2352-5134
卷号	18 页码:5
通讯作者	Wang, Lei(leiwang@qdio.ac.cn) ; Zhao, Wei(zwtjnxysc@163.com)
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.
关键词	Penaeus vannamei Feeding strategy Growth performance mTOR signaling pathway Compensatory growth
DOI	10.1016/j.aqrep.2020.100429
收录类别	SCI
语种	英语
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
WOS类目	Fisheries
WOS记录号	WOS:000603386600009
出版者	ELSEVIER
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/169881
专题	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
第一作者单位	中国科学院海洋研究所; 实验海洋生物学重点实验室
通讯作者单位	实验海洋生物学重点实验室
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.

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