欢迎来到天天文库
浏览记录
ID:5342432
大小:345.54 KB
页数:5页
时间:2017-12-08
《循环饥饿后异育银鲫幼鱼的补偿生长及部分生理生化指标的变化》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、第40卷第4期淡水渔业2010年7月Ve1.40No.4FreshwaterFisheriesJu1.2010循环饥饿后异育银鲫幼鱼的补偿生长及部分生理生化指标的变化姚峰,甄恕其,杨严鸥(1.安徽农业大学动物科技学院,合肥230036;2.长江大学动物科学学院,湖北荆州434025)摘要:在(28±1)℃水温条件下,以4种循环饥饿的投喂方式饲养初始体重为1.58g的异育银鲫(Carassiusaura—tusgibelio)幼鱼,研究其补偿生长和部分生理生化指标的变化。实验分为四组,第一组每天投喂,为对照组,第二组投喂4d后饥饿1d,第三组投喂2d后饥饿1d,第四组投喂1d后饥饿1d,4种
2、方式分别以C、R。、R和R表示,试验持续60d。结果显示,3个试验组的实际摄食率均显著高于对照组(P<0.05),但饲料转化效率均显著低于对照组,导致3个试验组的特定生长率显著下降,体重未赶上对照组,而且饥饿时间越长,体重增长率越低。鱼体的蛋白质、灰分含量未受到投喂方式的显著影响,干物质、脂肪和能量含量随饥饿时间增加显著下降;肥满度、肝体比、ATP酶、SOD酶活性以及谷丙转氨酶和谷草转氨酶活性也随饥饿时间的增加显著下降。‘关键词:饥饿;异育银鲫(auratusgibelio);生长;生理生化指标中图分类号:$965.117文献标识码:A文章编号:1000-6907·(2010)04-003
3、9-05Compensatorygrowthandsomephysiologicalandbiochemicalindicesafterexperiencingcyclesoffeeddeprivationandre-feedinginyoungfishofgibelcarp,CarassiusauratusgibelioYAOFeng,ZHENShu—qi,YANGYan.on(1.ScienceofAnimalandTechnologyCollege,AnhuiAgriculturalUniversity,Hefei230036;2.ScienceofAnimalCollege。Yan
4、gtzeUniversity,Jingzhou,Hube434205)Abstract:Inordertoinvestigatethecompensatorygrowthingibelcarp(Crsauratu~gibelio)(initialaveragebodyweight1.58g)intemperature28±1oC,a60dgrowthtrialwasconductedinfourfeedingregimesinasystemconsisting0f12self-circulationfiberglasstanks(volume:70cm×55cm×36em,waterdee
5、p20am).Inthefirstre,me,fishwerefedtosatiationduringthewholeexperimentalperiod,andinthesecond,thirdandf0urthregimes,fishwerefedtosatiationfor4days,2daysand1dayindividually,andthenweredeprivedoffoodfor1day.Thesefourregimeswerere—peatedandregardedasC(controlgroup),Rl/4,Rl/2andR1/1.Theresultsshowedtha
6、t,comparedwithgroupC,groupRl“,R1/2andRl/1hadsignificanthigherfeedintake(P<0.05),butsignificantlowerspecifcgrowthratesandfinalbodyweightsbecauseofsignificantlowerfeedconversioneficiency,andingroupRl/4,Rl/2andRl/l,thegrowthratesandbodyweightsdecreasedsignificantlywithincreasingstarvation.Thecontents
7、ofproteinandashperunitwetweightwereunafectedbyfeedingregime,whilethecontentsofwater,lipidandenergydecreasedsignificantlywithincreasingstarvation.Theconditionfactors,hepatosomaticindexsandactivitiesofATPase,SOD,AI
此文档下载收益归作者所有