Growth performance of juvenile white sturgeon as affected by feeding regimen

Yibo Cui, S. Hung, D. Deng, Yunxia Yang
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引用次数: 56

Abstract

Abstract Juvenile (mean ± SE, 8.6 ± 0.1 g) white sturgeon Acipenser transmontanus were fed for 8 weeks under one of six feeding regimens: continuously 24 h/d (C24); continuously 12.8 h/d during the day (C12/D), continuously 12.8 h/d at night (C12/N), 6 meals/d (M6), 4 meals/d (M4), and 2 meals/d (M2). Specific growth rate, feed efficiency, and body lipid content were significantly (P < 0.05) affected by the feeding regimen. These variables were highest in the C24 group and lowest in the M2 group; fish in the M6 group showed the second best performance. Specific growth rate and feed efficiency in terms of wet weight in the M6 groups were not significantly different from those in the C24 groups, but specific growth rate in terms of energy and energy retention efficiency were significantly lower. Feeding regimen had no effect on condition factor, hepatosomatic index, coefficient of variation in final body weight, and protein and ash contents. There was no significant difference in these indexes between 12.8-...
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饲养方式对白鲟幼鱼生长性能的影响
采用6种饲养方案中的一种饲养8周,分别饲喂幼鱼(平均±SE, 8.6±0.1 g):连续饲养24 h/d (C24);白天连续12.8 h/d (C12/ d),夜间连续12.8 h/d (C12/N), M6 6餐/d, M4 4餐/d, M2 2餐/d。不同饲喂方式对特定生长率、饲料效率和体脂含量有显著影响(P < 0.05)。这些指标在C24组最高,M2组最低;M6组的鱼表现第二好。以湿重计,M6组的特定生长率和饲料效率与C24组差异不显著,但以能量计的特定生长率和能量保留效率显著低于C24组。饲喂方式对条件因子、肝体指数、末重变异系数、蛋白质和灰分含量无显著影响。这些指标在12.8 ~…
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