Comparison of time-restricted and ad libitum self-feeding on the growth,feeding behavior and daily digestive enzyme profiles of Atlantic salmon

IOCAS-IR

	Comparison of time-restricted and ad libitum self-feeding on the growth,feeding behavior and daily digestive enzyme profiles of Atlantic salmon
	Shi C(史策); Liu Y(刘鹰); Yi MM(衣萌萌); Zheng JM(郑纪盟); Tian HQ(田会芹); Du YS(杜以帅); Li X(李贤); Sun GX(孙国祥)
发表期刊	Chinese Journal of Oceanology and Limnology
ISSN	0254-4059
	2017-07-15
出版年	2017
卷号	v.35 期号:04 页码:9-16
文献类型	CNKI期刊论文
摘要	Although it has been hypothesized that a predictable feeding regime in animals allows physiological variables to be adjusted to maximize nutrient utilization and,hence,better growth performance,the assumption has rarely been tested.This study compares the effects of time-restricted versus free access self-feeding on the growth,feeding behavior and daily digestive enzyme rhythms of Atlantic salmon(Salmo salar).In an experiment that lasted 6 weeks,fish(109.9 g) were divided into two groups:group 1 had free access to a self-feeder(FA);group 2 received three meals per day(2 h per meal) at dawn,midday and dusk via a time-restricted self-feeder(TR).At the end of the experiment,the fish were sampled every 3 h over a24-h period.The results showed that the TR fish quickly synchronized their feeding behavior to the feeding window and their blood glucose showed a significant postprandial increase,while FA fish displayed no statistically significant rhythms(P>0.05).Pepsin activity of TR fish also showed a significant daily rhythm(P<0.05) with the acrophase at the second feed and a decrease over the next 12 h.Average daily trypsin,lipase and amylase levels of FA fish were significantly lower than those of TR fish(P<0.01);however,the growth performance of both groups was similar(P>0.05).In conclusion,the study failed to confirm a link between the entrainment of daily digestive enzyme profiles and growth performance,with the TR group showing comparatively poor blood glucose regulation.
关键词	Atlantic salmon(Salmo salar) self-feeding regime feeding behavior digestive physiology daily rhythm
CNKI专辑号	A;D;
CNKI专辑名称	基础科学;农业科技;
CNKI专题号	D052;
CNKI专题名称	水产和渔业;
分类号	S917.4
收录类别	中科院核心 ; 中科院扩展
语种	英文;
资助项目(基金）	Supported by the Qingdao Postdoctoral Application Research Project(No.Y6KY01110N) ; the National Natural Science Foundation of China(Nos.31472312,41306152,31402283) ; the Qingdao Innovation Talents Program(No.13-CX-16) ; the National Key Technologies R&D Program of China(No.2014BAD08B09) ; the Earmarked Fund for Modem AgroIndustry Technology Research System(No.CARS-48)
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/189243
专题	中国科学院海洋研究所
作者单位	1.InstituteofOceanology,ChineseAcademyofSciences 2.National&LocalJointEngineeringLaboratoryofEcologicalMariculture 3.DalianOceanUniversity,SchoolofMarineScienceandEnvironmentEngineering 4.UniversityofChineseAcademyofSciences
推荐引用方式 GB/T 7714	Shi C,Liu Y,Yi MM,et al. Comparison of time-restricted and ad libitum self-feeding on the growth,feeding behavior and daily digestive enzyme profiles of Atlantic salmon. 2017.