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首页> 外文期刊>Fish Physiology and Biochemistry >Efficacy of dietary exogenous enzyme supplementation on growth performance, antioxidant activity, and digestive enzymes of common carp (Cyprinus carpio) fry
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Efficacy of dietary exogenous enzyme supplementation on growth performance, antioxidant activity, and digestive enzymes of common carp (Cyprinus carpio) fry

机译：膳食外源酶补充对生长性能，抗氧化活性和常见鲤鱼的消化酶的疗效（Cyprinus carpio）Fry

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Fishmeal (FM) is the main source of protein in fish diets, but its supply is stable. So, available plant protein sources could be used instead of FM in aquafeeds. These plants-source proteins may negatively affect feed intake and/or absorption of nutrients due to bad digestion. Therefore, the efficacy of a dietary exogenous enzymes mixture (Hostazyme X; HX) on growth performance, antioxidant capacity, and digestive enzymes in common carp, Cyprinus carpio, was assessed. Dietary HX was included in practical diets at levels of 0.0 (control), 0.1, 0.5, 1.0, and 2.0 g/kg diet. Fish (0.84 +/- 0.003 g) were fed on the tested diets up to apparent satiation twice daily in triplicate groups for 8 weeks. The fish performance was significantly improved (P < 0.05) by increasing dietary HX up to 1.0 g/kg diet after which fish growth and feed intake were almost the same. Also, intestinal amylase, lipase, and protease significantly increased (P < 0.05) due to HX supplementation leading to increased feed intake and overall growth performance. Likewise, the antioxidant activity of common carp was stimulated by HX supplementation in a dose-related manner, where the activities of superoxide dismutase, catalase, and glutathione peroxidase were significantly higher (P < 0.05), while malondialdehyde value was significantly lower (P < 0.05) in HX-fed fish groups than those fed the control diet. In conclusion, dietary HX could be used as a feed supplement to confer better growth performance and health of common carp fry with an optimal level of 1.0 g/kg diet.
机译：鱼粉（FM）是鱼类饮食中蛋白质的主要来源，但其供应稳定。因此，可以使用可用的植物蛋白来源而不是Aquafeeds中的FM。由于消化不良，这些植物 - 源蛋白可能会对饲料摄入和/或吸收营养物质产生负面影响。因此，评估了膳食外源酶混合物（Hostazyme X; HX）对鲤鱼，鲤鱼Carpio中常见鲤鱼生长性能，抗氧化能力和消化酶的疗效。膳食HX包含在0.00（对照），0.1,0.5,1.0和2.0g / kg饮食中的实际饮食中。将鱼（0.84 +/- 0.003g）送入测试的饮食中，每天两次饱和两次饱和两次，持续8周。通过将膳食HX增加至1.0g / kg饮食后，鱼类的性能显着改善（P <0.05），之后鱼生长和进料摄入量几乎相同。此外，由于HX补充，肠道淀粉酶，脂肪酶和蛋白酶显着增加（P <0.05），导致进料摄入增加和总体增长性能。同样地，鲤鱼的抗氧化活性以剂量相关的方式刺激，其中超氧化物歧化酶，过氧化氢酶和谷胱甘肽过氧化物酶的活性显着更高（P <0.05），而丙二醛值显着降低（P < 0.05）在HX喂食鱼群中，而不是喂养对照饮食的鱼群。总之，膳食HX可用作饲料补充剂，以赋予普通鲤鱼油炸的更好的增长性能和健康，最佳水平为1.0克/千克饮食。

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