陆可, 张焱鹏, 梁旭方, 汤树林. 不同养殖密度对翘嘴鳜生长、血液生化和抗氧化能力指标的影响[J]. 水生生物学报, 2023, 47(3): 473-478. DOI: 10.7541/2022.2021.0395
引用本文: 陆可, 张焱鹏, 梁旭方, 汤树林. 不同养殖密度对翘嘴鳜生长、血液生化和抗氧化能力指标的影响[J]. 水生生物学报, 2023, 47(3): 473-478. DOI: 10.7541/2022.2021.0395
LU Ke, ZHANG Yan-Peng, LIANG Xu-Fang, TANG Shu-Lin. THE INFLUENCE OF STOCKING DENSITY ON THE GROWTH, BLOOD BIOCHEMISTRY, AND ANTIOXIDANT CAPACITY INDICATORS OF CHINESE PERCH (SINIPERCA CHUATSI)[J]. ACTA HYDROBIOLOGICA SINICA, 2023, 47(3): 473-478. DOI: 10.7541/2022.2021.0395
Citation: LU Ke, ZHANG Yan-Peng, LIANG Xu-Fang, TANG Shu-Lin. THE INFLUENCE OF STOCKING DENSITY ON THE GROWTH, BLOOD BIOCHEMISTRY, AND ANTIOXIDANT CAPACITY INDICATORS OF CHINESE PERCH (SINIPERCA CHUATSI)[J]. ACTA HYDROBIOLOGICA SINICA, 2023, 47(3): 473-478. DOI: 10.7541/2022.2021.0395

不同养殖密度对翘嘴鳜生长、血液生化和抗氧化能力指标的影响

THE INFLUENCE OF STOCKING DENSITY ON THE GROWTH, BLOOD BIOCHEMISTRY, AND ANTIOXIDANT CAPACITY INDICATORS OF CHINESE PERCH (SINIPERCA CHUATSI)

  • 摘要: 研究旨在探讨不同养殖密度对翘嘴鳜(Siniperca chuatsi)生长、血液生化和抗氧化能力指标的影响。在循环水系统的水箱中(60 cm×60 cm×40 cm)于5种密度下超低养殖密度组(ELD; 3.34 kg/m3)、低养殖密度组(LD; 9.51 kg/m3)、中等养殖密度组(MD; 15.82 kg/m3)、高养殖密度组(HD; 21.05 kg/m3)和超高养殖密度组(EHD; 25.99 kg/m3)养殖翘嘴鳜平均体重(175.76±15.85) g40d。结果表明, ELD组和LD组在增重率(WGR)和饲料转化率(FCR)方面表现出更好的生产性能(P<0.05), 并增加血浆超氧化物歧化酶(SOD)、过氧化氢酶(CAT)和谷胱甘肽过氧化物酶(GSH-Px)的活性, 同时减少丙二醛(MDA)的形成(P<0.05)。此外, EHD组的血浆葡萄糖水平、总胆固醇水平和甘油三酯水平均较高(P<0.05)。LD组刺鼠基因相关蛋白(agrp)的mRNA表达下降, 而ELD组阿片促黑色素皮质激素原(pomc)基因表达下调。综上, 推荐在循环系统中养殖翘嘴鳜的适宜放养密度为3.34—9.51 kg/m3

     

    Abstract: The present study was to explore the influence of stocking density on the growth, blood biochemistry, and antioxidant capacity indicators of Chinese perch (Siniperca chuatsi) cultured in the bank (60 cm× 60 cm×40 cm) based recirculating systems for 40d. Fish (average weight 175.76±15.85 g) were reared in triplicate under five densities: extra-low stocking density (ELD; 3.34 kg/m3); low stocking density (LD; 9.51 kg/m3); medium stocking density (MD; 15.82 kg/m3); high stocking density (HD; 21.05 kg/m3) and extra-high stocking density (EHD; 25.99 kg/m3). After 40 days, growth performance, biochemical parameters, appetite-related genes expression and stress indicators of fish were evaluated. The results showed that the ELD and LD groups showed better productive performance for weight gain (WG) and feed conversion ratio (FCR) (P<0.05), and increased plasma superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GSH-Px) activities, and decreased the formation of malondialdehyde (MDA) (P<0.05). Additionally, the EHD group performed higher glucose levels, cholesterol levels and lower triglyceride levels in plasma (P<0.05). The mRNA expression of agouti gene-related protein (agrp) was riesd in LD group, whereas gene expressions of pro-opiomelanocortin (pomc) resulted in a down-regulation in ELD group. In sum, the suitable stocking density for culturing Chinese perch in recirculating systems is recommended to be between 3.34 and 9.51 kg/m3. It is of great significance to select the best stocking density for improving the economic benefit of fish culture.

     

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