饲料维生素E含量对美国红鱼生长和非特异性免疫的影响 |
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作者姓名: | 周立斌 王安利 张伟 张海发 |
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作者单位: | 1. 华南师范大学生命科学学院,广东省高等学校生态与环境科学重点实验室,广州,510631;惠州学院生命科学系,516007 2. 华南师范大学生命科学学院,广东省高等学校生态与环境科学重点实验室,广州,510631 3. 广东省大亚湾水产试验中心,惠州,516081 |
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基金项目: | 国家科技支撑计划,广东省科技计划重大专项项目,广东省科技计划项目,广东省重大科技兴海(兴渔)项目 |
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摘 要: | 采用单因子实验设计方法,进行了饲料中添加维生素E对美国红鱼生长(存活率、特定生长率和饲料效率)和非特异性免疫相关指标(血清中溶菌酶活性、血清总补体活性和超氧化物岐化酶(SOD)活性)影响的研究,设计了5个不同维生素E水平(0.1、25.3、51.0、102.8和203.2mg/kg)的等氮等能饲料,对美国红鱼进行为期56d的生长实验,每个水平3个重复,每个养殖单元放养初始体重为151g左右的美国红鱼20尾。饲养实验在海水网箱(1.5m×1.0m×1.0m)中进行。结果表明,随着饲料维生素E含量增加,美国红鱼饲料效率、特定生长率和成活率显著提高,美国红鱼最佳生长性能的饲料维生素E添加量为102.8mg/kg;美国红鱼血清溶菌酶和血清总补体活性随着维生素E的添加量的增加而显著升高,并且维生素E的添加量达到最高值102.8和25.3mg/kg,随后变化不明显;美国红鱼血清SOD活性随维生素E添加量的增加而显著升高,并且含量在102.8mg/kg达到最高值,随后显著下降。综上所述,美国红鱼维生素E的适宜添加量为102.8mg/kg。
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关 键 词: | 美国红鱼 维生素E 生长 免疫力 |
收稿时间: | 2007/10/25 0:00:00 |
修稿时间: | 2007/12/24 0:00:00 |
Effects of dietary vitamin E levels on growth and nonspecific
immunity of red drum Sciaenops ocellatus |
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Authors: | ZHOU Li-bin WANG An-li ZHANG Wei ZHANG Hai-fa |
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Institution: | ZHOU Li-bin WANG An-li ZHANG Wei ZHANG Hai-fa(1. Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, College of Life Science, South China Normal University, Guangzhou 510631;2. Department of Life Science, Huizhou University, 516007;3.Guangdong Daya Bay Fisheries Development Center, Huizhou 516081) |
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Abstract: | A single-factor experiment was conducted to study the effects of dietary vitamin E on growth(feed efficiency ratio(FER), specific growth rate (SGR) and survival rate (SR)) and nonspecific immunity (lysozyme activity, total complement activity and superoxide dismutase (SOD) activity) of red drum Sciaenops ocellatus L. , Five iso-nitrogenous and iso-energetic diets at levels of 0. 1,25.3,51.0,102.8 and 203.2mg/kg vitamin E were fed twice a day(07 : 30 and 16 : 30). Triplicated groups of 20 fish at initial body weight of about 151g were fed with the diets in the levels for 8 weeks. The experiment was done in floating net cages(1.5 m× 1.0 m× 1.0 m). Results indicated that the feed efficiency ratio, specific growth rate and survival rate increased significantly with the increase of vitamin E supplement level in diet after 8 weeks of the feeding trial,the optimal vitamin E for growth of red drum was about 102.8mg/kg;the lysozyme activity and total complement activity of serum in red drum increased significantly with the increase of vitamin E supplement level in diet, and the red drum had the maximal level of lysozyme activity and total complement activity when fed by 102.8 and 25.3 mg/kg VE,then the change of lysozyme and total complement activity were not significant ; the SOD activity of serum in red drum increased significantly with the increase of vitamin E supplement level in diet, and the red drum had the maximal level of SOD activity when fed by 102.8mg/kg VE then decreased significantly. Ingeneral,it was showed that the optimal vitamin E for red drum growth was about 102.8mg/kg. |
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Keywords: | Red drum Sciaenops ocellatus Vitamin E Growth Immunity |
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