2011.112011-09-23*,,,,,,**(,311300):(26、4064),、、、、、、、、、pH。,()。:,、、、(p0.05),(p0.05)。,、、、,、、、、pH。,(),、、、pH(p0.01),(p0.05)。:;;;*:(:30700567);(:201105222)。:,,,。E-mail:klnhgirl@163.com。**:,,,,.E-mail:liuzg007@163.com。、[1,2]。(),,。[3-5],[6]。,,。,,,,。,,,。11.126、40、64———,40,3。,()。1.2、,2d。、。(FA2004N,0.0001g)。、;=/。FHKS879.3B1673-1085201111-0008-058PoultryScience,kg/cm2,。,、、,,,。:,,30℃,;(%)=(/)×100%。;。FHK;,,,,。,(FA2004N,0.0001g);,pH(METTLERTOLEDOSevenEasy)pH。=/;=/。HU=100×lg(H-1.7×W0.37+7.57),W(g),H(mm)。1.3SPSS17.0One-wayANOVA,Duncan's,±。22.126、40、64,SPSS17.0,,1。ageofhen(g)eggweight(g)eggshapeindex(mm)eggshellthickness(mm)(kg/cm2)eggshellbreakingstrength(%)relativizedshellweight(%)()yolkcolorgradeyolkratioyolkindexHaughunitpHalbuminpH12639.6634±2.7015a1.306±0.052a0.314±0.029a3.77±0.76b9.5±0.8b5.9±0.7a0.281±0.023a0.463±0.026c76.5±7.7c9.31±0.08b4049.9351±3.2340b1.310±0.094a0.321±0.021a3.64±0.81ab9.2±0.6b5.9±0.7a0.319±0.021b0.435±0.024b68.0±13.1b9.26±0.09ab6457.3388±4.7830c1.357±0.050b0.315±0.020a3.37±0.79a8.6±0.7a7.5±0.8b0.341±0.022c0.414±0.026a61.6±12.6a9.24±0.16a:(p0.05),(p0.05)。2.1.1()、1,26、40、643(p0.05),。,40,,,(p0.05)。,40,。2.1.2()、3,3(p0.05),,,,(1)。3,402664(p0.05),2664(p0.05),,。2640,6440(p0.05),40。92011.112.1.3()、3。1,2640,40。,26、40、643(/),;,,,,。,3,(p0.05)。,;,,。2.1.4()2,pH。1,3,26。,。。,2664pH(p0.05),40,,。,1,,4064,,40。2.2(,)2。2,、、(p0.01),,2eggshelltexture(g)eggweighteggshapeindex(%)relativizedshellweight(kg/cm2)eggshellbreakingstrength(mm)eggshellthickness()yolkcolorgradeyolkratioyolkindexHaughunitpHalbuminpH46.4375±8.2430A1.320±0.067a9.2±0.8B3.64±0.79B0.316±0.026a6.3±1.0a0.304±0.034a0.444±0.032a70.8±12.2a9.28±0.11B52.2907±4.6753B1.334±0.076a8.6±1.0A2.04±0.72A0.310±0.040a6.0±0.7a0.309±0.034a0.444±0.039a69.3±13.2a8.87±0.29A:(p0.05),(p0.05),(p0.01)。、;,(p0.20)。,pH(p0.01),、、、(p0.05),。33.1、、,、、、。,,,V.Guesdon[7]。,[8]。3,3,。。,,[5],。,,,,。,10PoultryScience[9]。,,。1.32~1.39,1.35。,,64。,,,。3.2,,[10]。,、、、,、[2]。,,[3-5];,,、,,。,,40,2,[3-5];,,,、。3.3、、,[11]。[12],。,2640,64,1.6,。,,。,0.38~0.44,0.30;,,,[6]。,,,[13]。,,。,,;,。,,、,,。3.4、pH,、pH[14]。,,、;,、[15]。,,[6];,,,。0.5%、pH7.6~8.5[16],,、、pH[17]。pH、、,[18],pH。pH,;,pH,。,pH(p0.01),pH,。,,,40。、、pH,。112011.11[1]PeterHunton.Symposiumfocusesonenrichedandsafeeggs[J].WorldPoultry,2002,18:17-18.[2]DeketelaereB,GovaertsT,CouckeP,etal.Measuringtheeggshellstrengthof6differentgeneticstrainsoflayinghens:techniquesandcomparisons[J].BritishPoultryScience,2002,43:238-244.[3],.[J].,2000,16(1):33~37.[4]Rodriguez-NavarroA,KalinO,NysY,etal.Influenceofthemicrostructureontheshellstrengthofeggslaidbyhensofdifferentages[J].BritishPoultryScience,2002,43:395-403.[5],,.[J].,2008,17(2):48-50,69.[6],,,.[J].2000,16(2):77~81.[7]Guesdon,V.,Ahmed,A.M.H.,Mallet,S.,Faure,etal.Effectsofbeaktrimmingandcagedesignonlayinghenperformanceandeggquality[J].BritishPoultryScience,2006,47:1,1-12.[8],,,.(73~77)[J].,2006,15(6):44~47.[9],,,.[J].,2007,2:12-14.[10],,,.[J].,2006,3:5-6.[11],.[J].,1999,2:29-31.[12],,,.[J].,2011,23(2):280-284.[13].[D].2007,,.[14],,.[J].,2008,6:97-99.[15],,,.[J].,2002,24(6):854-859.[16]KempsB.J.,KetelaereB.De,BamelisF.R.,etal.Albumenfreshnessassessmentbycombiningvisiblenearinfraredtransmissionandlow-resolutionprotonnuclearmagneticresonancespectroscopy[J].PoultryScience,2007,86:752-759.[17]CouttsJ.A.,WilsonG.C.,FernandezS.Optimumeggquality:apracticalapproach[M].Sheffield,U.K.:5MPublishing,2007,63.[18].[J].,2010,31(24):453-456.ComparisonofEggswithDistinctEggshellTexturesorfromHenswithDifferentAges*WangPei-lun,LiBing-yi,GuoHai-ming,XiaYue-feng,SongGen-Zhang,JiangFang,LiuZhang-guo**(TheNaturingStationfortheStationKeyLaboratoryofSubtropicalSilviculture,LinAn,Zhejiang,311300)Abstract:Toeggsfromhenswithdifferentagesorwithvariousshelltexture,wecomparedwhicheggcontentandeggshellquality,suchaseggweight,relativzedeggshellweight,eggshapeindex,eggshellbrokenstrength,eggshellthickness,yolkcolor,yolkindex,yolkratio,HaughUnit,albumenpH.Thestatisticresultsshow:amongtheeggsfromdifferentweeksoldlayers(26、40、64weeks)thedifferencesaresignificant(p0.05)ineggweight,yolkindex,yolkratio,Haughunit;However,theeggshellthicknessshowsnosignificantdifference(p0.05).Furthermore,withtheageoflayinghensincreasing,theeggweight,eggshapeindex,yolkcolor,yolkratioisincreasing,respectively;onthecontrary,therelativzedeggshellweight,eggshellstrength,HaughUnit,yolkindex,albumenpHisdecreasing,respectively.Finally,tothevariousshell-textureeggs(normal-shelleggsandsand-likeshelleggs),theindexesofeggweight,therelativzedeggshellweight,eggshellstrengthandalbumenpHwereallshowverysignificantdifferences(p0.01),whilethereisnosignificantdifferencesinotherindicators.Keywords:weeksofage;shelltexture;eggquality;eggshellquality□12