中华乌塘鳢地埋式管网系统保育基础研究

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1、万方数据meterslong，2wide，1．5highmanagementwindowindependentlyfromApril20，2014toOctober10，2014，setgroupIthebreedingdensityas1．11kg／m3，lowbaitcasting；groupIIbreedingdensityas1．67kg／m3，middlebaitcasting；groupIIIbreedingdensityas2．78kg／m3，．highbaitcasting．Collected10Chineseblacks

2、leepereachgroup，andonthespottookeachtailfish’Sbodylength，bodywidth，bodyweight，andthenmakerecordsonMay5，May31，June30，July29，August28andOctober10．Anatomiedtheminthelab，removetheorgans，and出y'thentooknetweightofthem，taketheirstomachusedasstomachcontentanalysis，takethemuscleso

3、fback，dried，grindedfordeterminationofstableisotopestoexploresummaryofutilizationofChineseblacksleeperforthenaturalbaitwhichgointothroughexchangeofriserpipenetworksystem．Attheendofcultivation，makemusclemoisturecontent，crudeprotein，crudefat，andaminoacidstakeacomparativewith

4、Chineseblacksleeperwhichcultivatedinpondandlivednaturally．Beforethefirst100daysafterSeedling，undertheconditionofbreedingdensityof2．78kg／m3，10％oftheirbodyweightbaitcasting，growthperformanceofChineseblacksleeperwasthebest，andgrowthrateswerethehighest．Thegrowthrateofgrowthpe

5、rformanceindexislowestundertheconditionofbreedingdensityof1．11kg／m3，3％oftheirbodyweightbaitcasting．73daysbeforeappearonthemarket，growthratestotalbodylength，weight，netweightofChineseblacksleeperwerethehighestundertheconditionofbreedingdensityof1．11kg／m3，5％oftheirbodyweight

6、baitcasting，andtheV万方数据lowestundertheconditionofbreedingdensityof2．78kg／m3，12％oftheirbodyweightbaitcasting．Forthewholecultivation，bothgrowthperformanceandgrowthrateswerethebestperformance．Accordingtotheresultofstomachcontainsanalysis，crabs，shrimp，fishandshellfishenterinth

7、eundertubesystemthroughexchangestandpipeofthesystemcouldbeusedbyChineseblacksleepercultivatedinthesystem．ThesenaturalbaitscouldbeseeminChineseblacksleeper’SstomachmorefrequentlybeforeJune30thanafter,therateofnaturalbaitsappearationevento0．ResultsofStableisotopeshowthatcra

8、bs，shrimp，fishandshellfishenterintheundertubesystemthroughexchangestandpipeofthesystemcouldindee