| 摘要: |
| 在黄颡鱼的基础饲料中分别添加无机微量元素和不同水平的氨基酸螯合态微量元素Cu、Fe、Zn、Mn, 投喂平均体重为11.80g的黄颡鱼70天,研究饲料微量元素对黄颡鱼生长、饲料利用情况及肌肉组成成分的影响,并对肌肉、骨骼组织中微量元素的残留含量进行测定分析。结果表明,添加微量元素的各实验组的增重率、饵料系数、蛋白质效率均优于对照组。等量添加微量元素的氨基酸Ⅰ组明显优于无机微量元素组。氨基酸Ⅰ组的增重率显著高于无机组(P < 0.05),比无机组、氨基酸Ⅱ组、氨基酸Ⅲ组比较分别提高了16.86%、7.60%、8.03%。饵料系数、蛋白质效率在各组间有一定的差异,但均不显著(P > 0.05)。等量添加微量元素的氨基酸Ⅰ组各组织中微量元素的残留量高于无机组,微量元素含量高的氨基酸Ⅱ组残留量最多,但其增重效果不如氨基酸Ⅰ组(P > 0.05)。微量元素在黄颡鱼组织中的积累顺序为:骨骼>肌肉。微量元素的添加对黄颡鱼肌肉的常规营养成分、氨基酸组成及风味未产生显著的影响(P > 0.05)。因此,在本实验条件下,每kg饲料添加氨基酸微量元素的适宜量为Cu 4mg、Fe 140mg、Zn 20 mg、Mn 12mg。 |
| 关键词: 黄颡鱼 微量元素 生长性能 积累 体成分 |
| DOI：10.11693/hyhz200805008 |
| 分类号: |
| 基金项目:国家自然科学基金项目,39470524号;国家科技部农业成果转化资金资助项目,2006GB24910468号;湖南省“十一五”重点建设学科(动物学)资助项目,湘教通[2006]180号 |
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| PERFORMANCE OF YELLOW CATFISH PELTEOBAGRUS FULVIDRACO FED WITH METAL ELEMENTS ENRICHED DIET |
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HAN Qing1, LI Li-Li2, HUANG Chun-Hong1, ZHANG Bin3, HUANG Lin1, WANG Dong-Ming1
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1.Department of Life Science, Hunan University of Arts and Science, Changde, 415000;2.Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125;3.College of Animal Science and Technology, Hunan Agricultural University, Changsha, 410128
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| Abstract: |
| A 70-day experiment was conducted to evaluate the optimal formula of metal-enriched diet at the best performance in weight gain and feed conversion efficiency for juvenile yellow catfish Pelteobagrus fulvidraco. The juveniles of average 11.80g were fed with five different diets enriched with inorganic (Group 1) or amino-acid-chelated (Group 2) metal elements in different proportions. The weight gain, feed conversion efficiency, protein efficiency, and nutrients component and metal elements content in the fish muscle were determined. The results show that the enriched diet could enhance the fish growth performance, of which Group 2 was 16.86% higher than Group 1 in weight gain and other indicators. Metal elements deposited mainly in the bones but muscles. However, adding metal elements into fish diet showed no significant effect on the nutrient composition, amino acid composition and savor of muscle. The optimal formula of the enriched diet was Cu 4mg, Fe 140mg, Zn 20mg, Mn 12mg per kilogram diet. |
| Key words: Pelteobagrus fulvidraco, Microelement, Growth performance, Accumulation, Body composition |
