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郭鑫伟, 麦浩彬, 迟淑艳, 谭北平, 姚亚军, 姚红梅, 董晓慧, 杨奇慧, 刘泓宇, 章双. 三种不同的铜源对珍珠龙胆石斑鱼生长、抗氧化酶活性及肠道形态的影响[J]. 水生生物学报, 2019, 43(4): 739-747. DOI: 10.7541/2019.087
引用本文: 郭鑫伟, 麦浩彬, 迟淑艳, 谭北平, 姚亚军, 姚红梅, 董晓慧, 杨奇慧, 刘泓宇, 章双. 三种不同的铜源对珍珠龙胆石斑鱼生长、抗氧化酶活性及肠道形态的影响[J]. 水生生物学报, 2019, 43(4): 739-747. DOI: 10.7541/2019.087
GUO Xin-Wei, MAI Hao-Bin, CHI Shu-Yan, TAN Bei-Ping, YAO Ya-Jun, YAO Hong-Mei, DONG Xiao-Hui, YANG Qi-Hui, LIU Hong-Yu, ZHANG Shuang. EFFECTS OF THREE KIND CU SOURCES ON GROWTH PERFORMANCE, ANTIOXIDANT ENZYMES AND INTESTINAL MORPHOLOGY OF JUVENILE PEARL GENTIAN GROUPER (EPINEPHELUS LANCELATUS♂×EPINEPHELUS FUSCOGUTTATUS♀)[J]. ACTA HYDROBIOLOGICA SINICA, 2019, 43(4): 739-747. DOI: 10.7541/2019.087
Citation: GUO Xin-Wei, MAI Hao-Bin, CHI Shu-Yan, TAN Bei-Ping, YAO Ya-Jun, YAO Hong-Mei, DONG Xiao-Hui, YANG Qi-Hui, LIU Hong-Yu, ZHANG Shuang. EFFECTS OF THREE KIND CU SOURCES ON GROWTH PERFORMANCE, ANTIOXIDANT ENZYMES AND INTESTINAL MORPHOLOGY OF JUVENILE PEARL GENTIAN GROUPER (EPINEPHELUS LANCELATUS♂×EPINEPHELUS FUSCOGUTTATUS♀)[J]. ACTA HYDROBIOLOGICA SINICA, 2019, 43(4): 739-747. DOI: 10.7541/2019.087

三种不同的铜源对珍珠龙胆石斑鱼生长、抗氧化酶活性及肠道形态的影响

EFFECTS OF THREE KIND CU SOURCES ON GROWTH PERFORMANCE, ANTIOXIDANT ENZYMES AND INTESTINAL MORPHOLOGY OF JUVENILE PEARL GENTIAN GROUPER (EPINEPHELUS LANCELATUS♂×EPINEPHELUS FUSCOGUTTATUS♀)

  • 摘要: 试验旨在研究硫酸铜(CuSO4)、甘氨酸铜(Cu-Gly)、羟基蛋氨酸铜(Cu-HMA)三种铜源对珍珠龙胆石斑鱼(Epinephelus lanceolatus ♂× Epinephelus fuscoguttatus ♀)幼鱼生长、抗氧化酶活性和肠道形态结构的影响。选取初始体重为(9.00±0.00) g的珍珠龙胆270尾, 分别饲喂等氮等脂的3种试验饲料, 进行为期8周的养殖试验。结果表明: (1) Cu-Gly组和Cu-HMA组增重率、特定生长率显著高于CuSO4组(P<0.05); (2) Cu-HMA组肝体比、脏体比显著高于CuSO4组和Cu-Gly组(P<0.05), 各组间肥满度无显著差异(P>0.05); (3) Cu-HMA组和Cu-Gly组脊椎骨铜含量显著高于CuSO4组(P<0.05); (4) CuSO4组血清甘油三酯和低密度脂蛋白胆固醇显著高于Cu-Gly组和Cu-HMA组(P<0.05), 且CuSO4组血清高密度脂蛋白胆固醇显著低于Cu-Gly组和Cu-HMA组(P<0.05); (5) CuSO4组血清铜蓝蛋白显著高于Cu-Gly组和Cu-HMA组(P<0.05); (6)中肠和后肠皱襞高度Cu-HMA组显著高于CuSO4组和Cu-Gly组(P<0.05); 综合考虑生长、形态学指标、体成分、血清生化指标、抗氧化酶活性、组织矿物元素含量以及肠道形态结构, 在饲料中添加Cu-Gly和Cu-HMA均能显著改善珍珠龙胆石斑鱼幼鱼的肠道形态及血清脂质代谢, 进而改善生长。

     

    Abstract: This study evaluated the effects of dietary copper sulfate (CuSO4), glycine chelated copper (Cu-Gly), copper hydroxymethionine (Cu-MHA) on growth, antioxidant enzymes and intestinal morphology of juvenile pearl gentian grouper (Epinephelus lanceolatus ♂ × Epinephelus fuscoguttatus ♀). Juvenile pearl gentian grouper with the average body weight of (9.00±0.00) g were randomly divided into 3 groups with 3 replicates in each group and 30 fish in each replicate to feed isonitrogenous and isolipidic experimental diets with 3 different copper sources for 8 weeks. (1) The weight gain ratio (WGR), survival ratio (SR) in Cu-Gly and Cu-HMA groups were significantly higher than those in CuSO4 group (P<0.05). (2) The hepatosomatic index (HSI) and viscerosomatic index (VSI) in Cu-HMA group was significantly higher than those in CuSO4 and Cu-Gly groups (P<0.05). There was no significant difference in condition factor (CF) among all groups (P>0.05). (3) Cu contents of vertebrae in Cu-Gly and Cu-HMA groups were significantly higher than that in CuSO4 group (P<0.05). (4) The serum concentrations of triglyceride (TG) and low-density lipoprotein cholesterot (LDLC) in CuSO4 group was significantly higher than those in Cu-Gly and Cu-HMA groups (P<0.05). The serum concentration of high-density lipoproteot cholesterin (HDLC) in CuSO4 group was significantly lower than that in Cu-Gly and Cu-HMA groups (P<0.05). (5) The activity of serum ceruloplasmin (CP) in CuSO4 group was significantly higher than that in Cu-Gly and Cu-HMA groups (P<0.05). (6) The plica height (PH) of midgut and hindgut in Cu-HMA group were significantly higher than those in CuSO4 and Cu-Gly groups (P<0.05). These results revealed that dietary adding Cu-Gly and Cu-HMA could improve intestinal morphology and serum lipid metabolism to ameliorate growth of juvenile pearl gentian grouper.

     

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