摘要
Thepresentstudywasconductedtoevaluatethefeasibilityofreplacingfishmeal(FM)withbioactivepeptides(BPs)indietofwhiteshrimp(Litopenaeusvannamei).Thechangesingrowthperformance,bodycomposition,non-specificimmunity,andwaterqualitywereexaminedaftertheshrimpwerefedfourdiets,inwhich0%(control),33.3%,66.7%and100%ofFMwasreplacedbyBPs,respectively.ThegroupsweredesignatedasCon,1/3BPs,2/3BPs,and3/3BPs.Atotalof720shrimpwithaninitialbodyweightof1.46±0.78gwerefedtheexperimentaldietsfor56days.Theresultsrevealedthat:1)theweightgainrate(WGR)in1/3BPs,2/3BPs,and3/3BPswassignificantlyhigherthanthatinCon(P<0.05),whilenosignificantdifferencewasfoundonsurvivalrateandfeedconversionratio(FCR);2)thewhole-bodycrudeprotein(CP)andcrudelipids(CL)weresignificantlydifferentamonggroups,whiletherewasnosignificantdifferencebetweencrudeashandphosphoruscontents;3)thelevelsofacidphosphatase(ACP),lysozyme(LZM),superoxidedismutase(SOD),phenoloxidase(PO)andbactericidalactivityincreasedsignificantlywiththeinclusionofBPs;4)intermsofwaterquality,nosignificantdifferencewasfoundinpHanddissolvedoxygenamongdietsduringthewholeexperimentalperiod.Moreover,eventhoughnitriteandammoniumlevelstendedtoincreasewithtime,therewasnosignificantdifferenceamonggroups.TheresultsindicatedthatBPsisanapplicablealternativeofproteinsource,whichcansubstituteFMinthedietsofL.vannamei;itisabletoeffectivelypromotegrowthperformanceandimproveimmunity.Moreover,BPsinthedietshadnonegativeimpactonwaterquality.
出版日期
2016年03月13日（中国期刊网平台首次上网日期，不代表论文的发表时间）
