| 摘要: |
| 采用周期性饥饿再投喂的方法, 研究周期性饥饿再投喂对建鲤(1.5±0.2g)的生长、体组成、消化酶的影响。试验分为 10 个组, 共进行 60d。结果表明, 在相同的饥饿天数下, 延长再投喂天数可以使建鲤的增重率逐渐增加, 而且 S1F4、 S2F8、 S4F16 组的增重率与对照组无显著性差异(P>0.05), 9个周期性饥饿再投喂组在摄食期间的摄食率和特定生长率均显著性高于对照组(P<0.05), 而且饵料系数均低于对照组, 说明本试验建鲤的补偿生长是通过提高 |
| 关键词: 建鲤, 饥饿再投喂, 生长, 体组成, 消化酶活力 |
| DOI：10.11693/hyhz201103005005 |
| 分类号: |
| 基金项目:现代农业产业技术体系建设专项——国家大宗淡水鱼类产业技术体系资金资助, nycytx-49-21 号 |
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| THE EFFECTS OF THE CYCLIC STARVATION-REFEEDING ON GROWTH,BODY COMPOSITION AND DIGESTIVE ENZYME ACTIVITIES IN CYPRINUS CARPIO VAR. JIAN |
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QIAO Qiu-Shi1,2, JIANG Guang-Zhen1, LIU Wen-Bin1, XIA Wei1, LIU Zhao-Pu3
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1.Key Laboratory for Aquaculture Nutrition of Jiangsu Province, College of Animal Science and Technology, Nanjing Agricultural University;2.Key Laboratory for Marine Biology of Jiangsu Province, College of Resource and Environment,Nanjing Agricultural Univers;3.Key Laboratory for Marine Biology of Jiangsu Province, College of Resource and Environment, Nanjing Agricultural University
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| Abstract: |
| This experiment was conducted to investigate the effect of repetitive “starvation-refeeding” on growth, body composition and digestive enzyme activities in Cyprinus carpio var. Jian with initial weight of (1.5±0.2)g. The control group was fed everyday for 60 days ,while the test groups were subjected to 9 different repetitive cycles of starvation-refeeding (S1F2, S1F3, S1F4, S2F4, S2F6, S2F8, S4F8, S4F12, S4F16). “S” means starvation-days, “F” means refeeding-days, respectively. The results showed that weight gain ratio (WGR) increased with increasing refeeding days within a certain starvation-days, having the trend of (S1F2 < S1F3 < S1F4; S2F4 < S2F6 < S2F8; S4F8 < S4F12 < S4F16). No significant difference was observed in WGR between S1F4, S2F8, S4F16 and control group (P>0.05). Feeding rate (FR) and specific growth rate (SGR) of all test groups were significantly higher than control group (P<0.05). Besides, feed conversion ratio (FCR) of all test groups were lower than control group. No significant difference was observed in moisture, protein and ash content of whole fish composition (P>0.05) in all groups. However lipid content of whole fish of all test groups were lower than that of control group. Within test groups, lipid content increased with increasing refeeding-days within a certain starvation-days. Intestinal digestive enzyme activities of all test groups were higher than that of control group (P<0.05). |
| Key words: Cyprinus carpio var. Jian, Starvation-refeeding, Growth, Body composition, Digestive enzyme activities |
