Comparative evaluation of growth performance, flesh quality, and gut microbiota among three strains of largemouth bass (Micropterus salmoides)

IF 3.7 2区农林科学 Q1 FISHERIES

Aquaculture Reports Pub Date : 2025-10-03 DOI:10.1016/j.aqrep.2025.103134

Shiliang Jia , Qi Gao , Xiaoming Chen , Gaohua Yao , Yating Zhao , Qinghui Meng , Xingwei Xiang , Xueyan Ding , Hong Zeng , Fan Zhou

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Abstract

A comparative analysis was conducted to compare the growth performance, flesh quality, and gut microbiota of three strains of largemouth bass (Micropterus salmoides), Zhelu No.1 (ZL), the Reservoir group (RG), and Youlu No.3 (YL). For this purpose, three strains of largemouth bass raised under identical conditions until they reached 150 days of age. The dorsal muscle of fish was collected and analyzed for the proximate composition, texture properties, free amino acids, volatile organic compounds and ATP-related compounds. Meanwhile, the gut microbiota of different strains was also detected. The results demonstrated that the ZL strain exhibited higher body weight, fat content and condition factor compared to the RG and YL strains. Furthermore, the levels of umami amino acids, total amino acids (TAA), and essential amino acids (EAA) in the ZL strain were significantly higher than those in RG and YL strains. Moreover, HxR and Hx contents in the ZL strain were significantly lower than in the YL strain. GC‑IMS analysis further revealed that ethanol and benzaldehyde levels were higher in the ZL than in the other two strains. Additionally, gut microbiota analysis revealed that the ZL strain was characterized by a community dominated by Stenotrophomonas (60.1 %) and Chryseobacterium (23.6 %), a composition that may contribute to its superior growth performance. In summary, the ZL strain displayed integrated advantages in growth efficiency, flavor profile, and nutritional quality, underscoring its potential as a preferred alternative in largemouth bass aquaculture.

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三种大口黑鲈生长性能、肉质和肠道菌群的比较评价

对3种大口黑鲈（Micropterus salmoides），即浙录1号（ZL）、水库组（RG）和油录3号（YL）的生长性能、肉品质和肠道菌群进行了对比分析。为此，在相同的条件下饲养三种大口黑鲈，直到它们达到150日龄。采集鱼背肌，分析其近似组成、质地、游离氨基酸、挥发性有机物和atp相关化合物。同时，对不同菌株的肠道菌群进行了检测。结果表明，与RG和YL菌株相比，ZL菌株具有更高的体质量、脂肪含量和条件因子。ZL菌株鲜味氨基酸、总氨基酸（TAA）和必需氨基酸（EAA）含量显著高于RG和YL菌株。ZL菌株的HxR和Hx含量显著低于YL菌株。GC - IMS分析进一步表明，ZL的乙醇和苯甲醛含量高于其他两种菌株。此外，肠道菌群分析显示，ZL菌株的特点是一个以窄养单胞菌（60.1 %）和黄杆菌（23.6% %）为主的群落，这可能是其优越生长性能的原因。综上所述，ZL菌株在生长效率、风味特征和营养品质方面具有综合优势，具有作为大口黑鲈养殖首选品种的潜力。

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来源期刊

Aquaculture Reports Agricultural and Biological Sciences-Animal Science and Zoology

CiteScore

5.90

自引率

8.10%

发文量

469

审稿时长

77 days

期刊介绍： Aquaculture Reports will publish original research papers and reviews documenting outstanding science with a regional context and focus, answering the need for high quality information on novel species, systems and regions in emerging areas of aquaculture research and development, such as integrated multi-trophic aquaculture, urban aquaculture, ornamental, unfed aquaculture, offshore aquaculture and others. Papers having industry research as priority and encompassing product development research or current industry practice are encouraged.