Intestinal flora and immunity response to different viscous diets in juvenile largemouth bass, Micropterus salmoides

Liu, Yu; Cao, Yixiong; Zhang, Yumeng; Fan, Jiongting; Zhou, Hang; Huang, Huajing; Jiang, Wen; Zhang, Wei; Deng, Junming; Tan, Beiping

doi:10.1016/j.fsi.2022.06.054

Cited by 8 publications

(11 citation statements)

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“…Thus, our data suggest that dietary SNSP is more beneficial than INSP in enhancing the fermentation effect of intestinal flora. Similarly, Sinha et al [ 4 ] and our previous studies on largemouth bass [ 8 , 76 ] also found that SNSP had a stronger fermentation-promoting effect compared to INSP. However, unlike in this trial, the enhanced fermentation of dietary SNSP adversely affected the intestinal flora and gut health of largemouth bass [ 8 , 76 ].…”

Section: Discussionsupporting

confidence: 70%

“…Similarly, Sinha et al [ 4 ] and our previous studies on largemouth bass [ 8 , 76 ] also found that SNSP had a stronger fermentation-promoting effect compared to INSP. However, unlike in this trial, the enhanced fermentation of dietary SNSP adversely affected the intestinal flora and gut health of largemouth bass [ 8 , 76 ]. Differences in these results suggest that the effects of fermentation of dietary SNSP on fish gut flora and gut health vary with fish species, which probably correlates with differences in gut physiology.…”

Section: Discussionsupporting

confidence: 70%

“…Intestinal flora α-diversity is commonly used to assess intestinal flora homeostasis. Our previous studies demonstrated that dietary NSPs have considerable influence on the intestinal flora α-diversity of largemouth bass [ 7 , 8 ] and limited influence on tilapia [ 6 ]. In the present study, changes in the Shannon, Chao1, ACE, and Simpson indices exhibited that dietary NSPs supplementation has no significant effects on the intestinal α-diversity of grass carp.…”

Section: Discussionmentioning

confidence: 99%

“…NSPs were earlier classified as fiber, a dietary component that is not digested by fish and has limited nutritional value [ 3 , 4 ]. However, recent reports have shown that dietary NSPs have considerable effects on fish, including decreased dietary nutrient utilization and growth, increased intestinal damage and hepatic lesions [ 1 , 2 , 5 , 6 , 7 , 8 ]. Our previous studies have indicated that the physiological impacts of dietary NSPs not only depend on the NSPs contents, but also on the NSPs types (insoluble or soluble) and fish species [ 1 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

“…It is well known that fish with different feeding habits have different abilities to utilize dietary carbohydrates due to differences in digestive physiology [ 9 ], usually in the order of herbivorous fish > omnivorous fish > carnivorous fish. In our previous study, dietary NSPs inclusion had no negative influence on the growth of Oreochromis niloticus (omnivorous fish) [ 6 ] but significantly decreased the growth of Oncorhynchus mykiss and Micropterus salmoides (carnivorous fish) [ 1 , 8 ], suggesting that the tolerance of fish to dietary NSPs also varies with fish feeding habits.…”

Section: Introductionmentioning

confidence: 99%

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Different Types of Non-Starch Polysaccharides Alter the Growth, Intestinal Flora and Serum Metabolite Profile of Grass Carp, Ctenopharyngodon idella

Liu

Zhou

et al. 2022

Metabolites

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Dietary non-starch polysaccharides (NSPs) broadly influence fish intestinal flora and physiological metabolism, but limited information is available on grass carp (Ctenopharyngodon idella). This study investigated the effects of different types of NSPs on the growth, nutrient metabolism status, gut microbiota, and serum metabolome of grass carp. Fish were fed with diets containing 4.4% insoluble NSPs (INSP), 9.24% soluble NSPs (SNSP), 13.64% NSPs (4.4% INSP + 9.24% SNSP, NSP) and non NSPs (FM), respectively, for 9 weeks. Results showed that dietary SNSP decreased protein efficiency ratio and serum protein content, but increased feed coefficient ratio, feed intake, plasma blood urea nitrogen content, and plasma aspartate aminotransferase activity (AST); conversely, dietary INSP decreased plasma AST activity. Dietary INSP and SNSP increased serum free cholesterol content. Dietary NSPs altered the abundance of dominant bacteria and serum metabolite profiles. The differential metabolites between groups were significantly enriched in amino acid synthesis and metabolic pathways. In conclusion, dietary INSP exhibited a growth-promoting effect compared to SNSP. Dietary INSP is beneficial for improving nutrient metabolism and intestinal health. Moreover, dietary NSPs may regulate the physiological metabolism and feeding behavior of grass carp by altering amino acid synthesis and metabolism.

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