不同循环饥饿投喂模式对许氏平鲉生长和体成分的影响

doi:10.16378/j.cnki.1003-1111.21054

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Abstract A 67-day feeding trial was conducted to determine compensatory growth and body composition after experiencing cycles of starvation and re-feeding in juvenile black rockfish Sebastes schlegelii with initial body length of (10.25±0.74) cm and body weight of (16.77±2.72) g. Six feeding regimes were designed as follows: the control group of fish fed daily (S₀), and other five groups that were subjected to 2 days of starvation followed by 1 to 5 days of feeding to satiation, i.e. S₂F₁ (starved for 2 d, then fed 1 d), S₂F₂ (starved 2 d, then fed 2 d), S₂F₃ (starved 2 d, then fed 3 d), S₂F₄ (starved 2 d, then fed 4 d) and S₂F₅ (starved 2 d, then fed 5 d). The results showed that there were the maximal final body weight, weight gain rate and specific growth rate in group S₂F₅, showing an over-compensatory growth. The final body weight, weight gain rate and specific growth rate were not significantly different in group S₂F₄ from those in the control group (P>0.05), showing a completely compensatory growth. The final body weight, weight gain rate and specific growth rate in groups S₂F₁, S₂F₂and S₂F₃ were significantly lower than those in the control group (P<0.05), showing a non-compensatory growth. There were no significant differences in feed conversion efficiency, hepatosomatic index and condition factor among all groups (P>0.05), but the viscerosomatic index was significantly higher in the control group than that in the feeding regime groups (P<0.05). Compared with the control group, the body lipid content (except group S₂F₅) was significantly decreased (P<0.05), while the body protein and ash contents were not significantly different among all groups (P>0.05). The cyclic feeding regime of starved 2 d, then fed 5 d led to over-compensatory growth, and the feeding time was shortened by 29.85% compared with the control group, which is the best feeding mode under the experimental conditions.

Key words： Sebastes schlegelii feeding regime compensatory growth body composition

Received: 01 April 2021

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	Articles by authors
	LIU Kaikai
	DING Gang
	LI Le
	SONG Jingjing
	CHI Wendan
	YU Daode

Cite this article:

LIU Kaikai,DING Gang,LI Le, et al. Effect of Different Cyclic Starvation and Refeeding Regimes on Growth and Body Compositions in Black Rockfish Sebastes schlegelii[J]. Fisheries Science, 2023, 42(1): 142-146.

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https://www.shchkx.com/EN/10.16378/j.cnki.1003-1111.21054 OR https://www.shchkx.com/EN/Y2023/V42/I1/142

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