| 摘要: |
| 在对照饲料中添加不同水平的硫酸铜、富马酸铜和蛋氨酸铜, 使硫酸铜组铜离子含量为32mg/kg, 富马酸铜和蛋氨酸铜组铜离子含量分别为 16mg/kg、 32mg/kg 和 48mg/kg, 共组成 8 种饲料(饲料编号为对照、Sul-32、Fum-16、Fum-32、Fum48、Met-16、Met-32 和 Met-48), 饲喂凡纳滨对虾(初重 0.74±0.01g)8 周。 结果表明, 饲料中添加三种铜源均能不同程度提高凡纳滨对虾的特定生长率(SGR)、存活率(Survival)和蛋白质效率(PER), 降低饲料系数(FCE)。其中, Met-16 和 Fum-32 组的SGR 显著高于对照组(P<0.05), Met-16、Met-32 和 Fum-32 组的 PER 显著高于其它各组(P<0.05); 不同铜源对凡纳滨对虾的体组成没有显著影响(P>0.05), 但Met-32组的肝体比(HSI)显著下降(P<0.05)。各组间血清铜蓝蛋白(CER)含量差异不显著(P>0.05), Met-16 和 Fum-32 组的生长激素(GH)含量则显著高于对照组(P<0.05)。本研究结果表明, 饲料中三种铜源能不同程度的提高凡纳滨对虾的生长性能, 但相同浓度有机铜离子的生物利用率优于无机铜, 其顺序为: 蛋氨酸铜>富马酸铜>硫酸铜。饲料铜对凡纳滨对虾的促生长作用可能是通过提高体内相关抗氧化酶的活性及刺激生长激素的分泌来实现的。
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| 关键词: 凡纳滨对虾, 铜, 生长, 铜蓝蛋白, 生长激素 |
| DOI：10.11693/hyhz201004017017 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目, 30671628 号; 国家科技支撑计划课题资助, 2007BAD29B04 号。 |
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| EFFECTS OF DIFFERENT FORMS OF COPPER AND SUPPLEMENT ON GROWTH PERFORMANCE, SERUM CERULOPLASMIN, AND GROWTH HORMONE LEVEL OF PANEAUS VANNAMEI |
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ZHOU Meng1, WANG An-Li1, CAO Jun-Ming2
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1.College of Life Science, South China Normal University;2.Institute of Animal Science, Guangdong Academy of Agricultural Sciences
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| Abstract: |
| This experiment was conducted to study the effects of different forms of copper and supplement on growth performance of white shrimp, Paneaus vannamei. Different supplement rate of copper sulphate, fumarat and methionine were added into the casein-gultin basal diet for making dietary copper level in sulphate group at 32mg/kg, those of fumarat and methionine at 16, 32, and 48mg/kg The diets were coded as Control, Sul-32, Fum-16, Fum-32, Fum48, Met-16, Met-32, and Met-48, and fed to juvenile P. vannamei (IBW, 0.74±0.01g). Eight weeks later, the special growth rate (SGR), survival rate, protein efficiency rate (PER) of the shrimp increased in all copper supplemental groups compared to those of the Control, of which SGRs of group Met-16 and Fum-32 were significantly higher than that of the Control (P<0.05), PERs of group Met-16, Met-32, and Fum-32 were significantly higher than those of other groups (P<0.05). Different forms of copper had no significant effects on body composition of shrimp; however, HSI of group Met-32 was significantly decreased compared with those of other groups (P<0.05). Ceruloplasmin (CER) level changed with that of SGR, and no significant differences were observed among all the groups. Serum growth hormone (GH) varied similarly with that of CER. The contents of GH of groups Met-16 and Fum-32 were significantly higher than that of Control (P<0.05).Therefore, the three forms of dietary copper in every dosage could increase the growth performance of P. vannamei; however, organic copper one had better biological utilization than inorganic one in the same dose. The descending order of them is: copper methionine > copper sulphate > copper fumarat. The promotion by copper-enriched dietary to P. vannamei growth performance was probably due to the increasing of activity of anti-oxidation enzymes in shrimp body and the secreting of growth hormone.
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| Key words: Paneaus vannamei, Copper, Growth performance, Blue copper protein, Growth hormone |
