| 不同形式钴对凡纳滨对虾生长和组织钴含量的影响 |
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| 引用本文： | 董晓慧,杨原志,郑石轩,周歧存,张其华.不同形式钴对凡纳滨对虾生长和组织钴含量的影响[J].广东海洋大学学报,2006,26(6):8-12. |
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| 作者姓名： | 董晓慧 杨原志 郑石轩 周歧存 张其华 |
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| 作者单位： | 1. 广东海洋大学水产学院,广东,湛江,524025
2. 湛江粤海饲料有限公司,广东,湛江,524000 |
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| 摘 要： | 为研究氨基酸螯合钴对凡纳滨对虾的营养效果,在凡纳滨对虾配合饲料中添加5、10、15 mg/kg的氯化钴和蛋氨酸钴。饲养8周,4周末(饲养中期)称重,8周末称重并采集对虾肝胰脏和肌肉,测定肝胰脏和肌肉中的钴含量。结果表明:钴的添加形式和钴水平不影响对虾0~4周增重率,15 mg/kg蛋氨酸钴显著提高了对虾0~8周增重率,且两种形式的钴之间差异显著(P<0.05)。51、0 mg/kg的蛋氨酸钴和5、101、5 mg/kg的氯化钴不影响8周末对虾的增重率。特定生长率、饲料系数和蛋白质效率的变化趋势与增重率类似。钴的添加形式和钴水平不影响肌肉中的钴含量,15 mg/kg的氯化钴组肝胰脏中钴含量显著高于对照组(P<0.05),其他各组间无显著差异;蛋氨酸钴各组肝胰脏中钴含量无显著差异;钴的添加形式不影响肝胰脏中钴含量。统计结果表明,促进生长方面,两种钴之间存在显著差异,蛋氨酸钴的营养效果好于氯化钴。饲料中蛋氨酸钴的添加量为15 mg/kg时,对虾生长最快,5 mg/kg时,可满足需要。
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| 关 键 词： | 饲料添加剂 蛋氨酸钴 氯化钴 凡纳滨对虾 生长 沉积 |
| 文章编号： | 1007-7995(2006)06-0008-05 |
| 修稿时间： | 2006年6月1日 |
Effect of Cobalt Sources and Its Supplemental Level on Growth of Penaeus vannamei and Co Concentration in Selected Organs of the Shrimp |
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| DONG Xiao-hui,YANG Yuan-zhi,ZHENG Shi-xuan,ZHOU Qi-cun,ZHANG Qi-hua.Effect of Cobalt Sources and Its Supplemental Level on Growth of Penaeus vannamei and Co Concentration in Selected Organs of the Shrimp[J].Journal of Zhanjiang Ocean University,2006,26(6):8-12. |
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| Authors: | DONG Xiao-hui YANG Yuan-zhi ZHENG Shi-xuan ZHOU Qi-cun ZHANG Qi-hua |
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| Abstract: | The diet of Penaeus vannamei was added with 0,5,10,15 mg/kg Co either as(CoCl_(2)·6H_(2))O or Cobalt-Methionine(Co-Met).Shrimps were fed with experimental diets for 8 weeks and weighted at the end of 4~(th) and 8~(th) week.At the end of the 8~(th) week,hepatopancreas and muscle were collected.Co content of hepatopancreas and muscle were determined.The results indicated that: weight-gain rate of 4 weeks was not affected by Co sources and supplemental level.(15 mg/kg) Co-Met significantly improved weight-gain rate of 8 weeks,and significant difference between CoCl_(2)and Co-Met at this level.Every supplemental level of CoCl_(2)and_()Co-Met except(15 mg/kg) Co-Met did not affected weight-gain rate of 8 weeks.Special growth rate,feed conversion and protein efficiency have the same trend as weight-gain rate.Co content in muscle was not affected by Co sources and supplemental level.Co content in hepatopancreas_()of 15 mg/kg CoCl_(2) treatment was significantly_()higher than that of the controlled and other treatments have no significant difference.Co content in hepatopancreas was not affected by every supplemental level of Co-Met and Co concentration in hepatopancreas was not affected by Co sources.The statistical results show: there is remarkable difference between Co sources in improving the growth.Co-Met nutritious effect is better than CoCl_(2)and when the supplement of Co-Met is 15 mg/kg in feed,shrimps grow the fastest;when supplement of Co-Met is 5 mg/kg in feed,the demand is met. |
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| Keywords: | feed additive Co-Met Co Cl_(2)·6H_(2)O growth concentration |
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