A Review on Significance of Azolla Meal as a Protein Plant Source in Finfish Culture

Sebastian S. Mosha
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引用次数: 25

Abstract

The increase in costs and demand of protein from conventional resource necessitates fish farmers and hatcheries manager to incorporate cheap and locally available ingredients in fish diets. Among protein plant sources, Azolla seems to be good replacer of protein from expensive sources such as fish meal and fish oil depending on feeding habits of the fish species. It contains high crude protein content (13% to 30%) and essential amino acid (EAA) composition (rich in lysine) than most green forage crops and other aquatic macrophytes. A review was conducted on significance of Azolla meal as a protein plant source in finfish culture, mostly focus was on Tilapia species and family Cyprinidae. About 30 published online journal papers, from Research gate and Google scholar in aquaculture nutrition were reviewed. Among reviewed papers revealed that, the dietary Azolla supplementation at certain level have a positive effect on feed utilization and protein conversion ratio, mobilization and utilization of glycogenic amino acids, and growth performance. Therefore, this review suggests that, 10-45% Azolla inclusion level can be incorporated in the diet for Tilapia species, except for T. zillii which requires more than 40% protein contents. While in fish belong to the family Cyprinidae, the inclusion level should be 10-50% for Rohu, and 10-25% for the rest of family members, except Labeo fimbriatus which didn’t shows any effect up to 40% Azolla inclusion level in a diet.
杜鹃花粉作为蛋白质植物源在鱼类养殖中的意义
由于成本的增加和对传统资源蛋白质的需求增加,养鱼户和孵化场管理者必须在鱼类饲料中加入廉价和当地可获得的成分。在蛋白质植物来源中,根据鱼类的摄食习惯,红豆属植物似乎可以很好地替代鱼粉和鱼油等昂贵来源的蛋白质。它的粗蛋白质含量(13% ~ 30%)和必需氨基酸(EAA)组成(富含赖氨酸)高于大多数绿色饲料作物和其他水生植物。本文综述了红豆粕作为蛋白质植物源在鱼类养殖中的重要意义,重点介绍了罗非鱼种属和鲤科。本文综述了来自Research gate和Google scholar在水产养殖营养学领域发表的30余篇在线期刊论文。综上所述,饲粮中添加一定水平的杜鹃花对饲料利用率和蛋白质转化率、糖原氨基酸的动员和利用以及生长性能均有积极影响。综上所述,除对蛋白质含量要求在40%以上的紫尾罗非鱼外,其他罗非鱼的饲料中可添加10 ~ 45%的Azolla。在鲤科鱼类中,罗虎鱼的添加量为10-50%,其余鱼的添加量为10-25%,但在饲料中添加量达40%时,除拉贝鱼(Labeo finbriatus)无效果外。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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