The effect of Spirulina (Arthrospira platensis) as a microbial diatory feed supplement for juvenile of Nile Tilapia (Oreochromis niloticus)

Q2 Agricultural and Biological Sciences
Hafidh Al Mahrouqi, Sergey Dobretsov, Roberto Tefilo Abdala-Daz
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Abstract

Tilapia is the second most farmed fish in tropical and sub-tropical countries worldwide. This study investigated the effect of replacing fish meal by Spirulina platensis (groups fed with 5%, 10% and 15% Spirulina) on the growth of Nile tilapia O. niloticus juveniles. Intestinal microbiota of tilapia has been studied by MiSeq Illumina sequencing. No significant differences (P > 0.05) were observed for the protein, carbohydrate and lipids of fish fed with control food and different concentrations of spirulina. However, the Margalef species richness of the intestinal bacteria of tilapia fed with spirulina was significantly higher (P < 0.05) compared to the control samples. Evenness was significantly higher (P < 0.05) for tilapia fed with food substituted with the highest concentration of spirulina. Also, few potentially probiotic genera, like Bacillus and Actinomycetes were detected in the gut of the experimented Tilapia. On the other hand, the highest percent of potentially pathogenic genera was recorded for the genera Pseudomonas and Corynebacterium. In most cases, the highest abundances of potentially pathogenic species were found in control samples. As manipulation of the feed was shown to improve Tilapia microbiota, which could lead to further improvements in aquaculture production.
螺旋藻(Arthrospira platensis)作为尼罗罗非鱼(Oreochromis niloticus)幼鱼微生物补食饲料的效果
罗非鱼是世界上热带和亚热带国家第二大养殖鱼类。本试验研究了用螺旋藻代替鱼粉(5%、10%和15%螺旋藻组)对尼罗罗非鱼幼鱼生长的影响。利用MiSeq Illumina测序技术对罗非鱼肠道菌群进行了研究。饲喂对照饲料和不同螺旋藻浓度的鱼的蛋白质、碳水化合物和脂肪含量均无显著差异(P < 0.05)。然而,与对照组相比,饲喂螺旋藻的罗非鱼肠道细菌的Margalef物种丰富度显著提高(P < 0.05)。以螺旋藻含量最高的饲料替代罗非鱼,其均匀度显著提高(P < 0.05)。此外,在实验罗非鱼的肠道中检测到少量潜在的益生菌属,如芽孢杆菌和放线菌。另一方面,假单胞菌属和棒状杆菌属的潜在致病性百分比最高。在大多数情况下,在对照样品中发现了最高丰度的潜在致病性物种。由于对饲料的处理已被证明可以改善罗非鱼的微生物群,这可能导致水产养殖产量的进一步提高。
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来源期刊
Applied Environmental Biotechnology
Applied Environmental Biotechnology Agricultural and Biological Sciences-Agricultural and Biological Sciences (miscellaneous)
CiteScore
3.70
自引率
0.00%
发文量
2
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