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The probiotic effects of host-associated Bacillus velezensis in diets for hybrid yellow catfish (Pelteobagrus fulvidraco ♂ × Pelteobagrus vachelli ♀)
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Zhehui Jia, b, Xing Lub, Mingyang Xueb, Yuding Fanb, Juan Tianb, Lixue Dongb, Chuanzhong Zhuc, Hua Wenb, *, Ming Jiangb, *
Animal Nutrition | 2023, 15(1) : 114 - 125
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Animal Nutrition | 2023, 15(1): 114-125
• Original Research Article •
The probiotic effects of host-associated Bacillus velezensis in diets for hybrid yellow catfish (Pelteobagrus fulvidraco ♂ × Pelteobagrus vachelli ♀)
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Zhehui Jia, b, Xing Lub, Mingyang Xueb, Yuding Fanb, Juan Tianb, Lixue Dongb, Chuanzhong Zhuc, Hua Wenb, *, Ming Jiangb, *
Affiliations
  • aCollege of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
  • bYangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, China
  • cFujian Key Laboratory of Functional Aquafeed and Culture Environment Control, Fujian DBN-HY Aquatic Science and Technology Group Co., Ltd, Zhao'an, China
Published: 2023-12-10 doi: 10.1016/j.aninu.2023.08.004
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This study was to evaluate the potential of a host-associated Bacillus velezensis as a probiotic for hybrid yellow catfish (Pelteobagrus fulvidraco ♂ × Pelteobagrus vachelli ♀). Diets (B0 to B5) containing 0, 0.90 × 108, 0.80 × 109, 0.85 × 1010, 0.90 × 1011, 0.83 × 1012 CFU/kg B. velezensis YFI-E109 were fed to the fish with initial weight (3.07 ± 0.08g) in a recirculating aquaculture system for six weeks with three replicates, respectively. Probiotic effects were analyzed based on growth, body composition, liver and gut morphology, gut microbiome, and liver metabolome. Analysis of the bacterial genome has shown that the most abundant genes in B. velezensis YFI-E109 were distributed in carbohydrate and amino acid metabolism. Fish in groups B3 and B4 had better growth performance, and higher intestinal amylase (AMS) and lipase (LPS) activities compared with other groups (P < 0.05). Fish in groups B0 and B5 showed significant liver damage, while this status improved in group B3. The liver malondialdehyde (MDA) content in group B3 was lower than that in other groups (P < 0.05). The abundance of Mycoplasma, Ralstonia and Acinetobacter was significantly reduced in B3 and B5 compared to B0. The amino acid and carbohydrate metabolism pathways were enriched in group B3 compared with group B0. In conclusion, dietary B. velezensis YFI-E109 supplementation has the potential to improve growth, liver metabolism, and liver and gut health, and reshape the gut microbiome of hybrid yellow catfish. Excessive B. velezensis YFI-E109 reduced the prebiotic effects. The recommended dietary supplementation of B. velezensis YFI-E109 is 0.31 × 1010 to 0.77 × 1011 CFU/kg for hybrid yellow catfish according to the quadratic regression method by plotting specific growth rate (SGR), feed conversion ratio (FCR), MDA and activities of AMS against dietary B. velezensis YFI-E109 levels.

Bacillus velezensis  /  Probiotics  /  Hybrid yellow catfish  /  Intestinal health  /  Liver metabolome
Zhehui Ji, Xing Lu, Mingyang Xue, Yuding Fan, Juan Tian, Lixue Dong, Chuanzhong Zhu, Hua Wen, Ming Jiang. The probiotic effects of host-associated Bacillus velezensis in diets for hybrid yellow catfish (Pelteobagrus fulvidraco ♂ × Pelteobagrus vachelli ♀)[J]. Animal Nutrition, 2023 , 15 (1) : 114 -125 . DOI: 10.1016/j.aninu.2023.08.004
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Year 2023 volume 15 Issue 1
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Article Info
doi: 10.1016/j.aninu.2023.08.004
  • Receive Date：2022-12-10
  • Online Date：2026-02-03
  • Published：2023-12-10
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History
  • Received：2022-12-10
  • Revised：2023-08-09
  • Accepted：2023-08-15
Affiliations
    aCollege of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
    bYangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, China
    cFujian Key Laboratory of Functional Aquafeed and Culture Environment Control, Fujian DBN-HY Aquatic Science and Technology Group Co., Ltd, Zhao'an, China

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* Corresponding authors. E-mail addresses: (H. Wen)
(M. Jiang).
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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