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- Title
Differences of gut microbiota and lipid metabolism in Chinese perch (Siniperca chuatsi) with different growth rates.
- Authors
Zhang, Yanpeng; Feng, Hexiong; Liang, Xu‐Fang; He, Shan; Zhang, Qiwei; Li, Ling
- Abstract
This study is aimed to explore the differences of gut microbiota and lipid metabolism in Chinese perch (Siniperca chuatsi) with different growth rates. After 180 days post‐fertilization, among the population of Chinese perch (1,275 fish in total), 36 fish with different growth rates were selected from the low growth rate group (L group, initial weight 87 ± 2 g), the medium growth rate group (M group, initial weight 223 ± 4 g) and the high growth rate group (H group, initial weight 468 ± 13 g), respectively, with a total of 108 fish. The microbial species abundance and evenness in both M and H groups were obviously higher than those in the L group. The activities of lipase and trypsin in the gut showed a similar changing trend to the intestinal microbial diversity in L, M and H groups. The M and H groups showed a similar microbial composition, but they had different main functional bacteria. There were more microbial species in the H group than in the M group. Butyricicoccus might be used as an indicator to distinguish the growth rate of the M and H group. The intraperitoneal fat ratio and levels of triglyceride and total cholesterol in the plasma increased gradually with the increase in the growth rate. A large amount of fat accumulation was observed in the liver and gut of the H group, and the H group showed significantly higher levels of low‐density lipoprotein and high‐density lipoprotein in the plasma compared with the L and M groups. It was also found that the fat of the L and M groups mainly accumulated in the liver and gut, respectively, and the level of low‐density lipoprotein in the plasma of the M group than that in the L group. The mRNA level of fas and srebp1 decreased gradually with the increase in the growth rate. The M and H group had high mRNA levels of pparα and cpt1 than the L group. The mRNA levels of lpl and hl were higher in the H group than those in the L and M groups.
- Subjects
LIPID metabolism; GUT microbiome; FISH growth; DIGESTIVE enzymes; HIGH density lipoproteins; MICROBIAL diversity
- Publication
Aquaculture Research, 2022, Vol 53, Issue 5, p1766
- ISSN
1355-557X
- Publication type
Article
- DOI
10.1111/are.15705