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

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 a...

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Main Authors: Shi Ce, Liu Ying, Yi Mengmeng, Zheng Jimeng, Tian Huiqin, Du Yishuai, Li Xian, Sun Guoxiang
Format: Report
Language:English
Published: 2017
Subjects:
Online Access:http://ir.qdio.ac.cn/handle/337002/174106
id ftchinacasciocas:oai:ir.qdio.ac.cn:337002/174106
record_format openpolar
spelling ftchinacasciocas:oai:ir.qdio.ac.cn:337002/174106 2023-05-15T15:31:05+02:00 Comparison of time-restricted and ad libitum self-feeding on the growth, feeding behavior and daily digestive enzyme profiles of atlantic salmon Shi Ce Liu Ying Yi Mengmeng Zheng Jimeng Tian Huiqin Du Yishuai Li Xian Sun Guoxiang 2017-01-01 http://ir.qdio.ac.cn/handle/337002/174106 英语 eng Chinese journal of oceanology and limnology http://ir.qdio.ac.cn/handle/337002/174106 Atlantic salmon (salmo salar) Self-feeding regime Feeding behavior Digestive physiology Daily rhythm 期刊论文 2017 ftchinacasciocas 2022-06-27T05:45:20Z 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 a 24-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. Report Atlantic salmon Salmo salar Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR
institution Open Polar
collection Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR
op_collection_id ftchinacasciocas
language English
topic Atlantic salmon (salmo salar)
Self-feeding regime
Feeding behavior
Digestive physiology
Daily rhythm
spellingShingle Atlantic salmon (salmo salar)
Self-feeding regime
Feeding behavior
Digestive physiology
Daily rhythm
Shi Ce
Liu Ying
Yi Mengmeng
Zheng Jimeng
Tian Huiqin
Du Yishuai
Li Xian
Sun Guoxiang
Comparison of time-restricted and ad libitum self-feeding on the growth, feeding behavior and daily digestive enzyme profiles of atlantic salmon
topic_facet Atlantic salmon (salmo salar)
Self-feeding regime
Feeding behavior
Digestive physiology
Daily rhythm
description 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 a 24-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.
format Report
author Shi Ce
Liu Ying
Yi Mengmeng
Zheng Jimeng
Tian Huiqin
Du Yishuai
Li Xian
Sun Guoxiang
author_facet Shi Ce
Liu Ying
Yi Mengmeng
Zheng Jimeng
Tian Huiqin
Du Yishuai
Li Xian
Sun Guoxiang
author_sort Shi Ce
title Comparison of time-restricted and ad libitum self-feeding on the growth, feeding behavior and daily digestive enzyme profiles of atlantic salmon
title_short Comparison of time-restricted and ad libitum self-feeding on the growth, feeding behavior and daily digestive enzyme profiles of atlantic salmon
title_full Comparison of time-restricted and ad libitum self-feeding on the growth, feeding behavior and daily digestive enzyme profiles of atlantic salmon
title_fullStr Comparison of time-restricted and ad libitum self-feeding on the growth, feeding behavior and daily digestive enzyme profiles of atlantic salmon
title_full_unstemmed Comparison of time-restricted and ad libitum self-feeding on the growth, feeding behavior and daily digestive enzyme profiles of atlantic salmon
title_sort comparison of time-restricted and ad libitum self-feeding on the growth, feeding behavior and daily digestive enzyme profiles of atlantic salmon
publishDate 2017
url http://ir.qdio.ac.cn/handle/337002/174106
genre Atlantic salmon
Salmo salar
genre_facet Atlantic salmon
Salmo salar
op_relation Chinese journal of oceanology and limnology
http://ir.qdio.ac.cn/handle/337002/174106
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