微藻 Pediastrum boryanum增强了生长,并调节了尼罗河鱼的生理和转录组
Raghad E Soliman1, Ahmed Ateya2, Mohamed Abou-El-Atta3
1Department of Aquaculture, Faculty of Aquatic and Fisheries Sciences, Kafrelsheikh University, Kafrelsheikh, Egypt.
Scientific reports
|July 2, 2025
概括
饮食中使用 Pediastrum boryanum (PB) 补充剂显著增强了尼罗河鱼的生长,免疫反应和基因表达. 2g/kgPB的最佳剂量改善了鱼的健康和器官结构.
科学领域:
- 水产养殖营养水产养殖营养
- 鱼类生理学 鱼类生理学
- 分子生物学分子生物学
背景情况:
- 尼罗河鱼 (Oreochromis niloticus) 水产养殖在全球范围内至关重要.
- 优化料以改善鱼类生长和健康是一个正在进行的研究领域.
- 像Pediastrum boryanum (PB) 这样的微藻类显示出作为功能性料成分的潜力.
研究的目的:
- 为了研究饮食中的Pediastrum boryanum (PB) 对尼罗河鱼的影响.
- 评估PB对生长性能,免疫生理反应和基因表达的影响.
- 为了确定尼罗河鱼的最佳饮食PB水平.
主要方法:
- 对1800只尼罗河鱼进行了为期90天的养试验.
- 鱼被食补充了PB的0,1,2和4g/kg的饮食.
- 分析了生长参数,血细胞计数,血清免疫标记,抗氧化酶活动,基因表达和器官组织学.
主要成果:
- 摄入2g/kg (G3) 的食PB显著改善了最终体重,体重增加和特定生长率.
- 组G3显示红细胞计数,中性粒细胞,免疫球蛋白M,细胞活性和抗氧化酶活性 (SOD,催化酶) 的增强.
- 在G3中观察到与生长 (GH,IGF-1),免疫 (IL-6,IL-8) 和新陈代谢 (PGAM2) 相关的升级基因表达,以及肝脏和肠道形态的改善.
结论:
- 食 Pediastrum boryanum 补充剂有效地促进了尼罗河鱼的生长性能.
- PB增强免疫和抗氧化能力,以及关键生长和免疫相关基因的表达.
- 尼罗河鱼的最佳饮食含量水平为2g/kg,从而改善了鱼的整体健康和器官发育.
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