Promotion of pellet-feed feeding in mandarin fish (Siniperca chuatsi) by Bdellovibrio bacteriovorus is influenced by immune and intestinal flora

Chen, Xiaoli; Yi, Huadong; Liu, Shuang; Zhang, Yong; Su, Yuqin; Liu, Xuange; Bi, Sheng; Lai, Han; Zeng, Zhiwei; Li, Guifeng

doi:10.1016/j.aquaculture.2021.736864

Cited by 26 publications

(10 citation statements)

References 85 publications

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“…Previous studies have shown that probiotics can influence the feeding behavior of the host by regulating the microbiota [26,27,86]. However, few studies have been done on the regulatory effect of probiotics on eating disorders, especially on the pellet feed intake of mandarin fish [87]. Therefore, the present study was conducted to assess the effects of L. plantarum, L. rhamnosus and C. butyricum on the POPFR, survival, appetite, gut microbiota, innate immunity, antioxidant capacity and intestinal histology in mandarin fish and to explore the role of probiotics in regulating feeding behavior in vivo.…”

Section: Discussionmentioning

confidence: 99%

Probiotics Improve Eating Disorders in Mandarin Fish (Siniperca chuatsi) Induced by a Pellet Feed Diet via Stimulating Immunity and Regulating Gut Microbiota

Chen

Liu

et al. 2021

Microorganisms

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Eating disorders are directly or indirectly influenced by gut microbiota and innate immunity. Probiotics have been shown to regulate gut microbiota and stimulate immunity in a variety of species. In this study, three kinds of probiotics, namely, Lactobacillus plantarum, Lactobacillus rhamnosus and Clostridium butyricum, were selected for the experiment. The results showed that the addition of three probiotics at a concentration of 108 colony forming unit/mL to the culture water significantly increased the ratio of the pellet feed recipients and survival rate of mandarin fish (Siniperca chuatsi) under pellet-feed feeding. In addition, the three kinds of probiotics reversed the decrease in serum lysozyme and immunoglobulin M content, the decrease in the activity of antioxidant enzymes glutathione and catalase and the decrease in the expression of the appetite-stimulating regulator agouti gene-related protein of mandarin fish caused by pellet-feed feeding. In terms of intestinal health, the three probiotics reduced the abundance of pathogenic bacteria Aeromonas in the gut microbiota and increased the height of intestinal villi and the thickness of foregut basement membrane of mandarin fish under pellet-feed feeding. In general, the addition of the three probiotics can significantly improve eating disorders of mandarin fish caused by pellet feeding.

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Section: Discussionmentioning

confidence: 99%

Probiotics Improve Eating Disorders in Mandarin Fish (Siniperca chuatsi) Induced by a Pellet Feed Diet via Stimulating Immunity and Regulating Gut Microbiota

Chen

Liu

et al. 2021

Microorganisms

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“…These results are consistent with the results of common carp fingerlings gut bacterial culture in the system. The results of various studies indicated that the presence of bacteria in the fish intestine is a reflection of the fish's habitat and the type of food consumed (X. Chen et al, 2021; Zarkasi et al, 2017). Based on the results of Hansen and Olafsen (1999), microflora and pH of fish intestine, like those of higher vertebrates, depend on different conditions such as food composition, anaerobic conditions, bile salt, digestive enzyme concentrations, and the interactions of the intestinal bacterial population.…”

Section: Discussionmentioning

confidence: 99%

Poly‐β‐hydroxybutyrate concentration, microbial enzymes activity, and nutritional value in biofloc system using different carbon sources and C/N ratios in common carp, Cyprinus carpio culture

Najdegerami

Tukmechi

2022

J World Aquaculture Soc

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This experiment was designed with three carbon sources (Dextrin, wheat bran, and corn starch), each with two carbon to nitrogen (C/N) ratios (19 and 30) for 4 weeks. The data obtained from two variables (carbon sources, C/N ratio) were analyzed with a two‐way analysis of variance. At the end of the experiment, the results indicated that the use of varying carbon sources and C/N ratios significantly changed the nutritional value of microbial flocs (p < 0.05). Also, the results showed that both variables significantly affected the main groups of saturated, mono‐unsaturated, and polyunsaturated fatty acids in the microbial flocs (p < 0.05). Dextrin flowing corn starch at a low C/N ratio significantly increased poly‐β‐hydroxybutyrate accumulation in microbial flocs (p > 0.05). The microbial enzyme profile changed in all carbon sources but C/N ratios did not affect microbial enzymes in the treatments except in a significantly higher value for amylase and acidic protease activity at a C/N ratio of 30 (p < 0.05). Also, at the end of the experiment, total bacteria and Lactobacillus count were affected by carbon sources and the highest density was observed in wheat bran and Dextrin respectively. These findings may encourage farmers to consider specific carbon sources and C/N ratios based on culture conditions and species requirements.

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“…Therefore, it was not protein or lipid level of formulated feed that account for the performance gaps between the two types of feeds. Reasons may lie in the differences between natural and formulated feeds in the pro les of amino acids and fatty acids, palatability and nutrient utilization (Klett et al, 2022;Chen et al, 2021;Ende et al, 2017). Further studies are needed to nd out the de ciency of formulated feed and then ll the gaps.…”

Section: Discussionmentioning

confidence: 99%

“…Although formulated feed has been extensively used in aquaculture, the productions of many species are still highly dependent on natural feed because of their poor appetite or underperformance in growth or reproduction when fed on formulated feed (FAO 2007;Hachero-Cruzado et al, 2009;Bunlipatanon et al, 2012;Hien et al, 2016;Lee et al, 2018;Chen et al, 2021). In 2004, the total amount of trash sh consumed in aquaculture was 5 ~ 6 million tons (Tacon 2004), with 2.47 ~ 3.88 million consumed in the Asian-paci c region (FAO, 2009); in 2019, 11% of the158 million tons of world shery production was destined for non-food products, 79.51% of which was reduced mainly to shmeal and sh oil, and the remaining 4 million tons were used for other purposes, including feed of aquaculture (FAO, 2021).…”

Section: Introductionmentioning

confidence: 99%

Growth and Survival of Finfish Fed on Natural and Formulated Feeds---A meta-analysis

Liu

Shi

Wang

2022

Preprint

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This meta-analysis was conducted as an effort to reply to the questions ‘did formulated feed perform as well as natural feed in terms of growth and survival of finfish which had weaned on it? And what accounted for the contradictory research findings on this issue?’ 42 articles were included from which data on final weight, FCR, HSI and survival rate were extracted. High heterogeneity was detected among assays of final weight, FCR as well as HSI, and thus, subgroup analysis and meta regression under random effect model were used to analyze the effect sizes; for survival rate, the heterogeneity was neglectable (I2 = 0.00), so the overall effect size estimate was accepted directly after adjustment by trim-and-fill method as non-neglectable publication bias was indicated. Leave-one-out analysis was conducted to test the impact of individual studies on the combined effect sizes. Results showed that fish fed on formulated feed had significantly lower final weight and significantly higher FCR than those fed on natural feed, while they survived as well as the counterparts. Although the combined effect size of HSI had no significant different from 0, liver alteration was detected in many species and further research are needed. Species of the subjects and their trophic levels, feeding ration, protein content of natural feed and the experiment duration partially accounted for the contradictions among the individual studies. In addition, the relatively poor performance of formulated feed was not due to protein or lipid deficiency; further studies are needed to explain the gap and then fill it.

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Promotion of pellet-feed feeding in mandarin fish (Siniperca chuatsi) by Bdellovibrio bacteriovorus is influenced by immune and intestinal flora

Cited by 26 publications

References 85 publications

Probiotics Improve Eating Disorders in Mandarin Fish (Siniperca chuatsi) Induced by a Pellet Feed Diet via Stimulating Immunity and Regulating Gut Microbiota

Probiotics Improve Eating Disorders in Mandarin Fish (Siniperca chuatsi) Induced by a Pellet Feed Diet via Stimulating Immunity and Regulating Gut Microbiota

Poly‐β‐hydroxybutyrate concentration, microbial enzymes activity, and nutritional value in biofloc system using different carbon sources and C/N ratios in common carp, Cyprinus carpio culture

Growth and Survival of Finfish Fed on Natural and Formulated Feeds---A meta-analysis

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