饥饿胁迫对鲤形体、体成分及血液生理指标的影响

Effects of starvation stress on body shape,chemical composition and blood physiological of Cyprinus carpio

为了解饥饿胁迫对鲤形体、鱼体生化成分及血液生理的影响,在18～22℃条件下对鲤进行了0 d、10 d、20 d、30d的饥饿试验。试验结果表明,随着鲤饥饿时间的延长,肥满度、肠体比、肝体比呈现下降趋势,但差异均不显著(P>0.05);鲤肌肉中水分和粗灰分呈现升高的趋势,粗脂肪呈现下降的趋势,但差异均不显著(P>0.05),粗蛋白呈现下降的趋势,差异显著(P<0.05);血液中红细胞数量、血红蛋白值显著下降(P<0.05),白细胞数量呈现上升的趋势,血糖含量先下降后稳定下来。说明短期饥饿胁迫使鲤形体发生一定改变、随着饥饿时间的延长,鲤首先动用肌肉中的脂肪,再动用蛋白质来维持体内的正常代谢,同时血液生理指标也发生与饥饿相适应的变化。

The aim of the present study was to determine the effect of starvation on body appearance,muscle Composition and blood physiolgical of the carp（Cyprinus carpio） at the water temperature 18-20℃ in the cycle and flow water aquarium.The experiment was designed for four groups with three replication,which were 0 day（control）,10 days,20 days,30 days group.The results showed：With the carp hunger time extending,there was a trend to decline for the obese relative,intestine and body length ratio,live index of the carp,but the effects was not significantly（P0.05）;there was a trend to increase for contents of moisture,crude ash in the body muscle of the carp,but a trend to decline for the crude fat in the body muscle of the carp,and the differences was not significantly（P0.05）,while body contents of crude protein was remarkable difference（P0.05）;With the carp hunger time extending,red blood cell quantity and hemoglobin value dropped significantly（P0.05）,and white blood cell quantity decreased not significantly（P0.05）,blood glucose levels rasied first and then went down.The experiment illustrated that the carp body appearance had changed,and with the prolongatin of starvation,the muscle fat was decompose to exploit first,the muscle protein then to be used,at the same time,the body physiological of the carpwas changed to be fit for the starvation condition.