EFFECT OF ALA-GLN FEEDING ON GROWTH, ANTIOXIDANT LEVEL,AND IMMUNITY OF CYPRINUS CARPIO VAR. JIAN

W. Gui
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引用次数: 1

Abstract

This study was carried out using healthy Cyprinus with the initial body weight of(33.52±0.17) g in a single recirculating system for 8 weeks.Diets with equal levels of protein(35 g/kg) and energy(17 kJ/g) were administered to the Cyprinus at concentrations of 0.0 %(control diet) and 0.5%(trial diet) Ala-Gln of dietary dry matter in five different feeding modes: continuous 8 weeks of control diet(group I or control),trial diet at an interval of 2 weeks(group II),trial diet at 4 weeks and then control diet at 4 weeks(group III),the contrary to group Ⅲ(group IV) and continuous 8-week trial diet(group V).The trail was conducted to investigate the effects of different feeding mode of Ala-Gln on growth,immunity and antioxidant in Cyprinus.Our results indicated that growth rates under all different feeding modes of Ala-Gln were significantly higher than that of the control group(P0.05).Growth rate of Ⅱ was higher than that of Ⅲ,Ⅳ,Ⅴgroups(P0.05),and growth rate of Ⅲ was higher than that of Ⅴgroup(P0.05).Serum SOD of the Ⅳ and Ⅴgroups were significantly higher than the control group(P0.05),and serum SOD of the Ⅴgroup was significantly higher than those of Ⅱ and Ⅲ groups(P0.05).GSH-Px in hepatopancreas of different feeding modes were significantly higher than that of the control group(P0.05),Serum GSH-Px of Ⅳ and Ⅴgroups were higher than that of the control group(P0.05).LZM in the head kidneys of the Ala-Gln groups were higher than the control group,only group Ⅱ showed no significant difference(P0.05),LZM in the spleen of the groups Ⅳ and Ⅴ were significantly higher than that of the control group(P0.05).In the current experiment,we concluded that adding Ala-Gln could improve the growth,immunity and antioxidant levels of Cyprinus.There were significant differences of different feeding modes.Given economical efficiency and practicability,feeding mode with 2-week intervals were suggested in the practical aquaculture of Cyprinus.
ala-gln饲喂对鲤生长、抗氧化水平及免疫的影响
本研究选用初始体重为(33.52±0.17)g的健康鲤,在单一循环系统中饲养8周。以饲粮干物质Ala-Gln浓度为0.0%(对照饲粮)和0.5%(试验饲粮)的5种不同饲养模式,分别饲喂蛋白质(35 g/kg)和能量(17 kJ/g)水平相等的饲粮。连续饲喂8周的对照饲粮(ⅰ组或对照组),每隔2周饲喂一次试验饲粮(ⅱ组),每隔4周饲喂一次试验饲粮,然后每隔4周饲喂一次对照饲粮(Ⅲ组),与Ⅲ组(ⅳ组)和连续饲喂8周试验饲粮(ⅴ组)相反。本试验旨在探讨不同饲喂方式Ala-Gln对鲤生长、免疫和抗氧化能力的影响。结果表明,不同饲养方式下Ala-Gln的生长率均显著高于对照组(P0.05)。Ⅱ组的生长率高于Ⅲ、Ⅳ、Ⅴ组(P0.05),Ⅲ组的生长率高于Ⅴ组(P0.05)。Ⅳ组和Ⅴ组血清SOD显著高于对照组(P0.05),Ⅴ组血清SOD显著高于Ⅱ组和Ⅲ组(P0.05)。不同饲养方式肝胰脏GSH-Px均显著高于对照组(P0.05),Ⅳ和Ⅴ组血清GSH-Px均高于对照组(P0.05)。Ala-Gln组大鼠头肾LZM均高于对照组,只有Ⅱ组差异无统计学意义(P0.05),Ⅳ、Ⅴ组大鼠脾脏LZM均显著高于对照组(P0.05)。在本试验中,我们认为添加Ala-Gln可以提高鲤的生长、免疫和抗氧化水平。不同饲养方式之间存在显著差异。考虑到经济效益和实用性,建议在实际养殖中采用每2周饲喂一次的模式。
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