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首页> 外文期刊>Aquaculture Reports >The effects gotu kola (Centella asiatica) powder on growth performance, skin mucus, and serum immunity of Nile tilapia (Oreochromis niloticus) fingerlings
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The effects gotu kola (Centella asiatica) powder on growth performance, skin mucus, and serum immunity of Nile tilapia (Oreochromis niloticus) fingerlings

机译：葛头可乐粉对尼罗罗非鱼鱼种生长性能，皮肤黏液和血清免疫的影响

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摘要

The present study was conducted to assess the possible effects of gotu kola ( Centella asiatica ) powder (GKP) on skin mucus and serum immune response, as well as growth performance of Nile tilapia, Oreochromis niloticus . Three hundred twenty Nile tilapia fingerlings (average weight of 17.84?±?0.08?g) were divided into four treatments and fed four levels of gotu kola powder (GKP) as following 0, 5, 10, and 20?g kgsup?1/sup diet for 61 days. Completed Randomised Design with four replications was applied. The results showed that fish fed 5?g kgsup?1/sup GKP significantly improved skin mucus lysozyme (SMLA) and skin mucus peroxidase activities (SMPA) ( P ??0.05). However, no significant differences in SMLA and SMPA were observed in fish fed 10 and 20 g kgsup?1/sup GKP compared to the control group ( P ??0.05). For serum immunity, dietary administration of GKP showed significantly improved serum lysozyme and serum peroxidase activities compared to control group ( P ??0.05). The highest value was found in fish fed 5 and 10 g kgsup?1/sup GKP ( P ??0.05). Similarly, a significant increase in alternative complement (ACH50), phagocytosis, and respiratory burst activities were recorded in fish fed 5 and 10 g kgsup?1/sup GKP compared to the control ( P ??0.05). However, no significance was observed in fish fed 20 g kgsup?1/sup GKP compared to the control. Similarly, no significant difference in growth performance, feed conversion ratio, and survival rate was observed in fish fed GKP compared to the control. In summary, diets supplemented with GKP (10?g kgsup?1/sup) increased serum and mucosal immunity. However, GKP supplementations had no effects on Nile tilapia growth and survival rate.
机译：本研究旨在评估葛头可乐（Centella asiatica）粉（GKP）对皮肤粘液和血清免疫反应以及尼罗罗非鱼，尼罗罗非鱼（Oreochromis niloticus）的生长性能的可能影响。将三百二十只尼罗罗非鱼鱼种（平均重量为17.84？±？0.08？g）分为4种处理方法，并分别按照0、5、10和20？g kg的剂量饲喂4种水平的葛头可乐粉（GKP）。 ？1 饮食61天。应用具有四个重复的完整随机设计。结果表明，饲喂5？g kg ？1 GKP的鱼可显着改善皮肤粘液溶菌酶（SMLA）和皮肤粘液过氧化物酶活性（SMPA）（P <0.05）。然而，与对照组相比，饲喂10和20 g kg 1 GKP鱼的SMLA和SMPA没有显着差异（P <0.05）。在血清免​​疫方面，与对照组相比，饮食中GKP的给药显着改善了血清溶菌酶和血清过氧化物酶的活性（P <0.05）。在饲喂5和10g kg ？1 GKP的鱼中发现最高值（P 0.05）。同样，与对照组相比，饲喂5和10 g kg 1 GKP的鱼的替代补体（ACH50），吞噬作用和呼吸爆发活性显着增加（P 0.05）。但是，与对照相比，在饲喂20 g kg 1 GKP的鱼中没有观察到显着性。同样，与对照相比，喂食GKP的鱼在生长性能，饲料转化率和成活率上也没有显着差异。总之，补充GKP（10？g kg ？1 ）的饮食可提高血清和粘膜免疫力。但是，补充GKP对尼罗罗非鱼的生长和存活率没有影响。

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