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Time-restricted self-feeding causes fin damage of Atlantic salmon
Shi, Ce1,3; Liu, Ying1,3; Yi, MengMeng1,2; Zheng, Jimeng1,2; Tian, Huiqin1; Du, Yishuai1,3
AbstractThe way in which the feed is delivered mainly influences the growth rates and feed efficiency. Restricting the time during which food is available from a self-feeder may help to regulate production parameters, but may also increase competition. In this article, the effects of time-restricted self-feeding on growth, feeding behavior and fin index Atlantic salmon (Salmo salar) were studied over the course of 6 weeks. A total of 150 fish were divided into two groups in triplicates: One group had free access to self-feeders (FA), and the other group received three meals (2 h per meal) restricted to dawn, midday and dusk a day in light phase (TR). The results showed that there were no significant differences in production parameters (specific growth rate 1.33 +/- 0.21 and 1.40 +/- 0.21 % day(-1), for TR and FA, respectively), body composition and nutrient retention efficiencies between treatments, while the FA fish had significantly higher food wastage (0.79 +/- 0.06 vs. 0.56 +/- 0.10 %) compared with the TR fish. In the course of the experiment, the TR fish gradually improved the accuracy of trigger actuation; in 1-2, 3-4 and 5-6 weeks, 61, 68 and 80 % trigger actuations happened in the feeding window. Nevertheless, there was a significant decrease in the dorsal fin index found in the TR fish as the experiment proceeded (9.83 +/- 0.15 and 8.56 +/- 0.04 for the beginning and end, respectively; P < 0.05). The results indicate that time-restricted self-feeding causes fin damage on Atlantic salmon but has little effect on their growth. One should cautiously apply a complex self-feeding regime during production.
KeywordGrowth Self-feeding Regime Fin Index Salmo Salar
Indexed BySCI
WOS IDWOS:000394249000004
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Document Type期刊论文
Affiliation1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Natl & Local Joint Engn Lab Ecol Mariculture, Qingdao 266071, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Shi, Ce,Liu, Ying,Yi, MengMeng,et al. Time-restricted self-feeding causes fin damage of Atlantic salmon[J]. AQUACULTURE INTERNATIONAL,2017,25(1):47-55.
APA Shi, Ce,Liu, Ying,Yi, MengMeng,Zheng, Jimeng,Tian, Huiqin,&Du, Yishuai.(2017).Time-restricted self-feeding causes fin damage of Atlantic salmon.AQUACULTURE INTERNATIONAL,25(1),47-55.
MLA Shi, Ce,et al."Time-restricted self-feeding causes fin damage of Atlantic salmon".AQUACULTURE INTERNATIONAL 25.1(2017):47-55.
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