Effect of Spirulina platensis and Azolla nilotica as feed additives on growth performance, antioxidant enzymes and fecundity of Oreochromis niloticus

IF 0.8 4区农林科学 Q3 FISHERIES

Iranian Journal of Fisheries Sciences Pub Date : 2021-05-10 DOI:10.22092/IJFS.2021.124136

A. El-Daim, A. E. Asely, M. Kandiel, E. A. El-Gawad, Hiam Elabd, A. Shaheen, Amany Abbass

{"title":"Effect of Spirulina platensis and Azolla nilotica as feed additives on growth performance, antioxidant enzymes and fecundity of Oreochromis niloticus","authors":"A. El-Daim, A. E. Asely, M. Kandiel, E. A. El-Gawad, Hiam Elabd, A. Shaheen, Amany Abbass","doi":"10.22092/IJFS.2021.124136","DOIUrl":null,"url":null,"abstract":"This study was conducted in two experiments. Experiment 1 aimed to investigate the growth promoting and anti-oxidative effects of Azolla nilotica (AZN) and Spirulina platensis (SP) in Oreochromis niloticus. Seven fish groups (G1-G7), each in three replicates, were fed a basal diet (control), AZN 5%, AZN 10%, SP 0.5%, SP 1%, a mixture of Azolla nilotica 5% and Spirulina platensis 1% (AZN 5 %-SP 1% mix), and a mixture of Azolla nilotica 10% and Spirulina platensis 1% (AZN 10% SP 1% mix), respectively, for 3 months. The results showed a significant increase in growth indices (weight gain, specific growth rate, average length gain, feed efficiency ratio), and a decrease in the feed conversion ratio in all supplemented groups compared to control. Hepato-somatic index in G4 and G5 groups, and intestinal-somatic index in G4 G6, and in G5 and G6 were obviously higher than control. Spleno-somatic index and antioxidant enzymes (GSH-px, SOD and CAT) markedly increased in G5 and G6 compared to control. Significant increase (p<0.05) in white blood cells was recorded in G2 and G4. Experiment 2 verified the effect of one-month supplementation of SP 1% on males and females O. niloticus fecundity. Males fed with SP 1% had an enhanced fertility as indicated by an increase in sperm density, spermatozoa motility and livability rates compared with the control. There was a significant increase in eggs number and the fecundity index in unripe females and a tendency of egg size to increase in ripen fish. It could be concluded that SP 1% and AZN 5% supplementation is advantageous to improve O. niloticus growth and fecundity.","PeriodicalId":14569,"journal":{"name":"Iranian Journal of Fisheries Sciences","volume":null,"pages":null},"PeriodicalIF":0.8000,"publicationDate":"2021-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Iranian Journal of Fisheries Sciences","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.22092/IJFS.2021.124136","RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"FISHERIES","Score":null,"Total":0}

引用次数: 4

Abstract

This study was conducted in two experiments. Experiment 1 aimed to investigate the growth promoting and anti-oxidative effects of Azolla nilotica (AZN) and Spirulina platensis (SP) in Oreochromis niloticus. Seven fish groups (G1-G7), each in three replicates, were fed a basal diet (control), AZN 5%, AZN 10%, SP 0.5%, SP 1%, a mixture of Azolla nilotica 5% and Spirulina platensis 1% (AZN 5 %-SP 1% mix), and a mixture of Azolla nilotica 10% and Spirulina platensis 1% (AZN 10% SP 1% mix), respectively, for 3 months. The results showed a significant increase in growth indices (weight gain, specific growth rate, average length gain, feed efficiency ratio), and a decrease in the feed conversion ratio in all supplemented groups compared to control. Hepato-somatic index in G4 and G5 groups, and intestinal-somatic index in G4 G6, and in G5 and G6 were obviously higher than control. Spleno-somatic index and antioxidant enzymes (GSH-px, SOD and CAT) markedly increased in G5 and G6 compared to control. Significant increase (p<0.05) in white blood cells was recorded in G2 and G4. Experiment 2 verified the effect of one-month supplementation of SP 1% on males and females O. niloticus fecundity. Males fed with SP 1% had an enhanced fertility as indicated by an increase in sperm density, spermatozoa motility and livability rates compared with the control. There was a significant increase in eggs number and the fecundity index in unripe females and a tendency of egg size to increase in ripen fish. It could be concluded that SP 1% and AZN 5% supplementation is advantageous to improve O. niloticus growth and fecundity.

查看原文本刊更多论文

螺旋藻和尼罗杜鹃饲料添加剂对尼罗褐虾生长性能、抗氧化酶和繁殖力的影响

这项研究分两个实验进行。实验1旨在研究尼罗偶氮藻（AZN）和钝顶螺旋藻（SP）对尼罗罗非鱼的促生长和抗氧化作用。七个鱼组（G1-G7），每个组在三个重复中，分别喂食基础日粮（对照），AZN 5%，AZN 10%，SP 0.5%，SP 1%，5%尼罗菌和1%螺旋藻的混合物（AZN 5%-SP 1%混合物），以及10%尼罗菌和10%螺旋藻的混合物。结果显示，与对照组相比，所有补充组的生长指数（体重增加、比生长率、平均长度增加、饲料效率比）显著增加，饲料转化率下降。G4和G5组的肝脏体细胞指数、G4和G6组的肠道体细胞指数以及G5和G6组明显高于对照组。与对照组相比，G5和G6的脾体细胞指数和抗氧化酶（GSH-px、SOD和CAT）显著增加。在G2和G4中，白细胞显著增加（p＜0.05）。实验2验证了一个月补充SP 1%对尼罗罗非鱼雄性和雌性繁殖力的影响。与对照组相比，喂食1%SP的雄性具有更高的生育能力，表现为精子密度、精子活力和存活率的增加。未成熟雌性的卵数和繁殖力指数显著增加，成熟鱼类的卵大小有增加的趋势。结果表明，添加1%的SP和5%的AZN有利于提高尼罗罗非鱼的生长和繁殖力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Iranian Journal of Fisheries Sciences FISHERIES-

CiteScore

2.30

自引率

11.10%

发文量

审稿时长

3 months

期刊介绍： 1- Living various species (contains animals and vegetal species) in various aquatic ecosystems. 2- Health and diseases of aquatic species. 3- Determining the stocks and specific time and location for catching and reliable exploitation for sustainable development. 4- Methods of propagation and culture of high value aquatic resources. 5- Aquatic stock assessment and the methods of restocking the high value species and suggestion for rate, areas and the time for releasing fish and other aquatic organisms fries. 6- Pollutant agents and their effects to the environments of aquatic species. 7- Feed and feeding in aquatic organisms. 8- Fish processing and producing new products. 9- The economic and social aspects of fisheries.