Journal of Tianjin Agricultural University ›› 2026, Vol. 33 ›› Issue (3): 30-35.doi: 10.19640/j.cnki.jtau.2026.03.006

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Study on the influence of packing density and transportation time on the behavior status, survival rate and antioxidant capacity of grass goldfish

Wang Kun1,2,4, Zhang Yongming3, Xu Lintong1,4, Wang Na1, Sun Jinhui2,4, Jiang Jufeng1,4,Corresponding Author   

  1. 1. Tianjin Fisheries Research Institute, Tianjin 300221, China;
    2. College of Fisheries, Tianjin Agricultural University, Tianjin 300392, China;
    3. Tianjin Baodi District Agricultural Development Service Center, Tianjin 301899, China;
    4. Tianjin Ornamental Fish Technology and Engineering Center, Tianjin 300221, China
  • Received:2024-10-29 Online:2026-06-30 Published:2026-06-30

Abstract: This study was carried out to explore the influence of different packing density and transportation time on the behavior and status [body weight(41.63±1.00)g, body length(10.35±0.40)cm], survival rate, water quality index and antioxidant capacity of grass goldfish. Transportation was simulated by plastic bag packing with 4 packing densities(i. e. A 12 tails / pack, B 16 tails / pack, C 20 and D 24 tails / pack)and 4 transportation times(24,48,72 and 96 h). The results showed that the dissolved oxygen and pH decreased; The content of nitrite and ammonia nitrogen increased; The T-AOC oxidative stress increased and then decreased; SOD activity and CAT activity decreased to different degrees; The grass goldfish in groups A and B showed better antioxidant resistance and lower stress response, and the survival rate was significantly higher than those of groups C and D. The study shows that a high packing density(24 tails/pack)is adopted within 48 hours of transportation, 20 tails is recommended for 72 hours, 16 tails for 96 hours, but 12 tails/pack is not recommended as packing density(physical damage due to excessive activity space).

Key words: grass goldfish, transportation density, transportation time, water quality index, antioxidant capacity

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