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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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 |
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Open Polar |
collection |
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR |
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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 |
_version_ |
1766361569999978496 |