4.7 Article

Evaluation of Methanotroph (Methylococcus capsulatus, Bath) bacteria meal on body composition, lipid metabolism, protein synthesis and muscle metabolites of Pacific white shrimp (Litopenaeus vannamei)

期刊

AQUACULTURE
卷 547, 期 -, 页码 -

出版社

ELSEVIER
DOI: 10.1016/j.aquaculture.2021.737517

关键词

Litopenaeus vannamei; Methanotroph bacteria meal; Lipid metabolism; Protein synthesis; Muscle metabolites profiling

资金

  1. fund of The National Key R&D Program of China [2019YFD0900200]

向作者/读者索取更多资源

The study evaluated the use of a new dietary protein, BPM, derived from Methylococcus capsulatus, Bath bacteria on Litopenaeus vannamei. It found that BPM had no significant effect on shrimp growth performance, but reduced body lipid content and affected lipid and protein metabolism. These findings suggest that BPM could be a potential alternative protein source for shrimp feed, with notable impacts on shrimp metabolism.
A feeding trial was conducted to evaluate a new dietary protein Methanotroph (Methylococcus capsulatus, Bath) bacteria meal (BPM) on nutritional profile of Litopenaeus vannamei. The basal diet was formulated to contain 25% fish meal and then 15%, 30% and 45% of fish meal protein were replaced with BPM in three experimental diets, which were labeled FM, BPM15, BPM30, and BPM45, respectively. A total of 480 uniform-sized shrimp were equally distributed to four groups with three replicates and fed experimental diets four times daily for seven weeks. Results showed that dietary BPM had no significant effect on the growth performance of shrimp (P 0.05) but significantly reduced the crude lipid content of the whole body in shrimp fed the BPM30 diet compared to the FM diet (P < 0.05). Total cholesterol and triglyceride in the hemolymph fell significantly with the increase BPM substitution (P < 0.05). Expression of fas (fatty acid synthetase) significantly decreased with increasing BPM substitution, but the expression of cpt-1 (carnitine palmitoyltransferase) significantly increased in shrimp fed BPM30 (P < 0.05). Expression of tor (target of rapamycin) significantly decreased in hepatopancreas, while an opposite change was exhibited in the intestine of shrimp fed BPM45 (P < 0.05). Results of metabolomics indicated that dietary BPM affected the TCA cycle, ascorbate and aldarate metabolism, and glutathione meta-bolism in shrimp. In conclusion, BPM is an alternative to FM as a novel protein source for shrimp feed, but the changes in whole body composition, lipolysis and fatty acid synthesis, and protein synthesis and muscle me-tabolites of L.vannamei are noted.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据