HUBEI AGRICULTURAL SCIENCES ›› 2024, Vol. 63 ›› Issue (10): 124-130.doi: 10.14088/j.cnki.issn0439-8114.2024.10.023

• Aquatic Products • Previous Articles     Next Articles

Effects of dietary peony seed shell on the liver histopathology, antioxidant activity and nonspecific immunity of Pelteobagrus fulvidraco

LIU Lu-yi1,2, WANG Zhan-chang1, ZHU Wen-huan3, HE Wan-wan1, AI Tao-shan1,2, ZHANG Li-qiang1   

  1. 1. Fisheries Research Institute, Wuhan Academy of Agricultural Sciences, Wuhan 430207, China;
    2. Wuhan Chopper Fishery Bio-Tech Co., Ltd., Wuhan 430207, China;
    3. Wuhan Aquatic Technology Promotion Center, Wuhan 430000, China
  • Received:2023-04-18 Online:2024-10-25 Published:2024-11-05

Abstract: To investigate the effects of dietary peony seed shell on fish oxidation resistance and nonspecific immunity, yellow catfish were fed with 1% or 5% peony seed shell (commercial feed containing 1% or 5% peony seed shell) for 3 weeks. Meanwhile, fish fed with commercial feed only were used as the blank control group, and fish fed with 1% or 5% peony seed oil were used as positive control group. The results showed that, compared with blank control group, the activity of superoxide dismutase (P<0.001) and the content of complement C3 (P<0.05) in serum of fish fed with 1% peony seed shell increased significantly. Liver superoxide dismutase and catalase activities were higher than those of the blank control group (P<0.001), and liver malondialdehyde content decreased significantly (P<0.001). Liver histomorphology of yellow catfish was normal and intact in both the blank control group and 1% peony seed shell group, and there was no obvious difference between the two groups. Peony seed shell had a dose-dependent positive effect on promoting the antioxidant capacity and nonspecific immunity in yellow catfish, all the test indexes in the 5% peony seed shell group showed a remarkably better change. Compared with blank control group, serum superoxide dismutase, liver superoxide dismutase and catalase activities in 5% peony seed shell group increased by 100% (P<0.001), 245% (P<0.001) and 176% (P<0.001), respectively. Serum lysozyme activity and complement C3 content increased by 36% (P<0.001) and 33% (P<0.01), respectively. In both dose groups, peony seed shell showed similar positive effects on yellow catfish compared to peony seed oil, the suitable addition amount was 1%~5%.

Key words: peony seed shell, peony seed oil, feed additive, antioxidation, nonspecific immunity, Pelteobagrus fulvidraco

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