| 不同饲料蛋白水平下L-肉碱对新吉富品系尼罗罗非鱼生长和饲料利用的影响 |
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| 引用本文： | 张明辉,陈刚,董宏标,张健东,周晖,汤保贵,黄建盛,施刚,姜玲.不同饲料蛋白水平下L-肉碱对新吉富品系尼罗罗非鱼生长和饲料利用的影响[J].广东海洋大学学报,2008,28(6). |
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| 作者姓名： | 张明辉 陈刚 董宏标 张健东 周晖 汤保贵 黄建盛 施刚 姜玲 |
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| 作者单位： | 广东海洋大学水产学院,广东省南海水产经济动物增养殖重点试验室,广东,湛江,524025 |
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| 基金项目： | 广东省科技厅科技计划项目资助
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| 摘 要： | 研究了三个蛋白水平(22%、25%、28%)和五个L-肉碱水平(0、200、400、600、800mg/kg)下尼罗罗非鱼生长和饲料利用率。结果表明,随着饲料中蛋白水平的提高,罗非鱼幼鱼的终体重、增重率(WGR)和特定生长率(SGR)呈上升趋势,而饲料系数(FCR)和蛋白质效率(PER)均随饲料蛋白水平的升高而显著下降(P<0.05);同等蛋白水平下,终体重、WGR和SGR均在L-肉碱添加量为200mg/kg时最高,不添加L-肉碱组最小;在添加400mg/kgL-肉碱时FCR最小,而PER最大,与不添加L-肉碱组比较,差异均显著(P<0.05)。说明饲料中蛋白含量和L-肉碱添加量能显著影响罗非鱼幼鱼的生长和饲料利用,而外源性L-肉碱可明显促进罗非鱼生长,提高饲料转化效率。
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| 关 键 词： | 饲料蛋白质含量 L-肉碱 新吉富罗非鱼 生长 饲料利用 |
Effects of Different Dietary Protein and L-Carnitine Levels on the Growth and Feed Utilization of Juvenile of New GIFT Strain Nile Tilapia |
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| ZHANG Ming-hui,CHEN Gang,DONG Hong-biao,ZHANG Jian-dong,ZHOU Hui,TANG Bao-gui,HUANG Jian-sheng,SHI Gang,JIANG Ling.Effects of Different Dietary Protein and L-Carnitine Levels on the Growth and Feed Utilization of Juvenile of New GIFT Strain Nile Tilapia[J].Journal of Zhanjiang Ocean University,2008,28(6). |
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| Authors: | ZHANG Ming-hui CHEN Gang DONG Hong-biao ZHANG Jian-dong ZHOU Hui TANG Bao-gui HUANG Jian-sheng SHI Gang JIANG Ling |
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| Institution: | ZHANG Ming-hui,CHEN Gang,DONG Hong-biao,ZHANG Jian-dong,ZHOU Hui,TANG Bao-gui,HUANG Jian-sheng,SHI Gang,JIANG Ling(Fisheries College,Guangdong Ocean University,Guangdong Province Key Laboratory of Aquaculture in South China Sea for Aquatic Economic Animals,Zhanjiang 524025,China) |
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| Abstract: | A two-factor,multi-level,cross-experimental design was utilized to test the efficacy of growth of NEW GIFT Strain Nile Tilapia fed with diets of three protein levels(22%,25%,28%),supplemented with five L-carnitine levels(0,200,400,600,800 mg /kg),15 feed processings,each dealing with two repetitions and eight weeks' culture.The results showed that final body weight,weight gain rate(WGR) and specific growth rate(SGR) increased with the increase of protein level,while feed conversion ratio(FCR) and protein ef... |
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| Keywords: | dietary protein levels L-carnitine New GIFT Strain of Nile Tilapia growth feed utilization |
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