投喂模式对黄颡鱼幼鱼补偿生长的影响

《投喂模式对黄颡鱼幼鱼补偿生长的影响》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、安徽农业大学学报，2009，36(2)：236．240JournalofAnhuiAgriculturalUniversity投喂模式对黄颡鱼幼鱼补偿生长的影响姚峰，杨严鸥，甄恕其，苏时萍(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，N~l'l434025)摘要：在(25±1)℃水温和自然光照下，以4种模式投喂鲜活水蚯蚓，饲养平均初始体重为358．57mg的黄颡鱼(PeheobagruslvidraeoRichardson)幼鱼48d，第1种模式为对照组，每天投喂，第2、3、4种为试验组．分别是探喂3d后饥饿1d、投喂6d后饥饿2d

2、、投喂12d后饥饿4d，4种模式分别以SS、S和S4／u表示。结果显示，3个试验组均表现出补偿生长，其中S3组为完全补偿生长，S和S4／u组为超补偿生长，补偿生长由摄食率和饵料转化效率共同提高导致；3个试验组成活率显著高于对照组，肥满度和内脏指数与对照组无显著差异；试验结束时，3个试验组的鱼体脂肪、蛋白质和能量含量与对照组无显著差异，但s和s组的鱼体干物质含量显著下降。关键词：黄颡鱼；补偿生长；投喂模式中图分类号：$963文献标识码：A文章编号：1672—352X(2009)02-0236-05Efectsoffeedingregimeoncompensator

3、ygrowthofyellowcatfishlarvaeYAOFeng‘，YANGYan—ou，ZENGShu—qi，SUShi．ping(1．SchoolofAnimalScienceandTechnology，AnhuiAgriculturalUniversity，Hefei230036；2．SchoolofAnimalScience，YangtzeUniversity，Jingzhou434025)Abstract：Inordertoinvestigatethecompensatorygrowthinyellowcatfish(Peheobagrusful

4、vidracoRichard—son)(initialaverageweight358．57mg)atdifferentfeedingregimes．a48dgrowthtrialwasca~iedoutinasys．ternconsistingof12tanks(volume：70cm×55cm×37cm，20cmwaterdepth)attemperature(25±1)clCandnaturalphotoperiod，andlivetubificidworms(Limnodrilushoffmeisteri)werefedinfourfeedingregi

5、mes．Thefishweredeprivedoffoodforonedayatthebeginningoftheexperiment，then100fishwererandomlyselected，、batch。weighedandallocatedintoeachtankrespectively．Eachfeedingregimecontainedthreetanksse1ectedrandomly．Inthefirstregime，fishwerefedtosatiationduringthewholeexperimentalperiod(controlg

6、roup)．Inthesecondre．me，fishwerefedtosatiationfor3daysandthenweredeprivedoffoodfor1day．Inthethirdregime．fishwerefedtosatiationfor6daysandthenweredeprivedoffoodfor2days．Inthefourthregime，fishwerefedtosatiationfor12daysanddeprivedoffoodfor4days．ThefourregimeswererepeatedandmarkedasSo，Sl

7、／3，S2／6andS4／12．Weightedexcesslivetubificidwormswerefedtofishinatankat9：00．anduneatenwornlswerecollected24hafterfeedingandre—weighed．Weightlossinwormswasdeterminedfrom3controltankscontainingnofish，andtheweightoftheuneatenfoodwascorrectedwiththeweightlossinworms．Theresultsshowed：(1)Gr

8、oupS1／3hasco