摘要
选取体质量（82．1±4．5） g的健康异育银鲫120尾，随机分成对照组和处理组，每组3个平行，每个平行20尾鱼。对照组正常投喂，处理组饥饿处理，试验期为28 d ，养殖温度22～25℃。饥饿3、7、14、21、28 d后，分别测定异育银鲫血液中甲状腺素、胰岛素水平及肝胰脏、肌肉生化组分的含量。试验结果表明，饥饿降低了异育银鲫血液甲状腺激素和胰岛素含量，其中饥饿处理7 d和21 d组异育银鲫血液中甲状腺激素含量显著低于对照组（ P＜0．05）；饥饿7、21、28 d ，胰岛素与对照组差异显著（ P＜0．05）。饥饿3、7、14 d的异育银鲫肝糖原和肌糖原含量显著降低（ P＜0．05），肝胰脏和肌肉脂肪含量在整个饥饿过程中均显著低于对照组（P＜0．05），饥饿对肝胰脏和肌肉的蛋白含量和水分无显著影响。因此饥饿降低了异育银鲫甲状腺激素和胰岛素水平及代谢水平，可能是鱼体应对饥饿胁迫的重要生理反应。
The levels of triiodothyronine （T3 ） and insulin （INS） in serum and approximate composition in hepatopancreas and muscle were determined in crucian carp Carassius auratus gibelio with initial body weight of（82 .1 ± 4 .5） g starved for 3 ,7 ,14 and 28 days as treatments and fed as control with triplication （20 fish per group ,total of 120 fish） at water temperature of 22~25 ℃ .The results showed that the level of serum T3 was found significant decrease 7 , and 21d after starvation , and the level of serum INS significant decrease 7 ,21 ,28 d after starvation （P〈 0 .05） .There were significantly lower glycogen contents in hepatopancreas and muscle 3 ,7 ,and 14 d after starvation than those in the control group （P〈0 .05） .There was no significant difference in protein level and moisture in hepatopancreas and muscle in the fed fish and starved fish .The lipid contents in hepatopancreas and muscle were found to be rapidly decreased during starvation （P〈 0 .05） .The reduction in serum T3 and INS levels was responsible for reduction in the metabolic rate w hich is the physiological responses for the fish to adapt the stress of starvation .
出处
《水产科学》
CAS
北大核心
2013年第12期717-720,共4页
Fisheries Science
基金
浙江省自然科学基金资助项目(NOY3090171)
关键词
异育银鲫
饥饿
胰岛素
甲状腺激素
生化组分
Carassius auratus gibelio
starvation
triiodothyronine
insulin
approximate composition
