您好，欢迎访问中国水产科学研究院 机构知识库！
中国水产科学研究院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Beneficial effects of Haematococcus pluvialis on growth and hepatopancreas health status in crayfish (Procambarus clarkii) via remodeling the gut microbial metabolic functions

文献类型： 外文期刊

作者： Wang, Aimin 1 ; Hui, Wenjie 1 ; Deng, Xin 2 ; Tian, Hongyan 1 ; Zhang, Wuxiao 1 ; Xia, Silei 1 ; Liu, Fei 1 ; Yang, Wenping 1 ; Yu, Yebing 1 ; Liu, Bo 3 ; Shao, Peng 4 ; Zhu, Aimin 4 ;

作者机构： 1.Yancheng Inst Technol, Coll Marine & Biol Engn, Yancheng 224051, Peoples R China

2.Hunan Agr Univ, Fisheries Coll, Changsha 410128, Peoples R China

3.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Wuxi 214081, Peoples R China

4.Yancheng Acad Fishery Sci, Yancheng 224051, Peoples R China

5.Yancheng Shangshui Environm Biotechnol Engn Co Ltd, Yancheng 224008, Peoples R China

关键词： Procambarus clarkii; Haematococcus pluvialis; Growth; Hepatopancreas health; Gut microbiota

期刊名称：AQUACULTURE （ 影响因子：3.9； 五年影响因子：4.4 ）

ISSN： 0044-8486

年卷期： 2025 年 595 卷

页码：

收录情况： SCI

摘要： Plant proteins fulfill roles in low-fishmeal diets for crustaceans, but their overuse could have negative effects. Haematococcus pluvialis has the potential to be used as a functional additive due to its high astaxanthin. As such, this study aimed to investigate the effects of dietary H. pluvialis supplementation on growth, hepatopancreas health, and gut metabolic functions in crayfish. 720 crayfish with average weight around 9.20 g were randomized into six treatments (HP0, HP0.3, HP0.6, HP0.9, HP1.2, and HP1.5) in three replications each, and fed six different dosages of H. pluvialis over sixty days. Crayfish exposed to H. pluvialis at concentrations of 0.3, 0.6, and 0.9 % showed significant increases in final average weight, weight gain rate, and specific growth rate (P < 0.05) compared to the HP0 group, together with the highest contents of muscle and shell astaxanthin in the HP0.9 group. Furthermore, increasing H. pluvialis supplementation exhibited the potential to repair hepatopancreas, as demonstrated by the decrease in hemolymph malondialdehyde (MDA) content and activities of alanine aminotransferase and aspartate aminotransferase, as well as the increase in the total protein content, superoxide dismutase, and glutathione peroxidase (GSH-Px) activities. Moreover, high H. pluvialis diets improved microbial dysbiosis by increasing specific microbes, the alpha diversity index, and shifting prominent phyla such as Proteobacteria and Firmicutes. Specifically, dietary H. pluvialis inclusion significantly decreased Vibrio (Proteobacteria) compared to the HP0 group (P < 0.05), but Tyzzerella (Firmicutes) showed the opposite regulatory pattern. A further statistical check revealed that 20 differential OTUs were shared by all H. pluvialis groups compared to the HP0 group, with OTU1439 and OTU2941 identified as the main growth-liver health contributors. Accordingly, high H. pluvialis diets contributed to more complex and stable microbial networks, and down-regulated alanine, aspartate, and glutamate metabolism, as well as lipopolysaccharide biosynthesis. Taken above, the optimal dietary H. pluvialis inclusion level was recommended to be 0.78-0.86 % according to the growth and astaxanthin contents. High H. pluvialis feeding reversed gut microbial dysfunction and improved hepatopancreas antioxidant capacity.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：中国水产科学研究院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台