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1、-Growthregularpatternoftransgeniccowscarryinghumanalpha—lactalbumingeneAbstractStudywasconductedinTianjinBeichendairyfarmwith11postive,18negativetransgenichumanalpha-lactalbumincalvesand15non-transgeniccalvestoinvestigatethegrowthregularpatternoftransgeniccows,11turnalpha-lacta
2、lbumintransgeniccattleand18transgenicnegativecattleweretheexperimentalgroup,15thetraditionalHolsteincowswerethecontrolgroup.Designedthreetests,growthregularpatternofcowswhichturnedhumanalpha-lactalbumingene,nutrientdigestibilityofthecarryinghumanalpha-lactalbumingenecattleandph
3、ysiologicalandbiochemicalindexesstudyofturnalpha-wheyproteingenecattle,theanalysisofgrowthbetweentransgenicanimalsandtraditionalanimals.Test:Growthregularpatternofturnhumanalpha-lactalbumingenebovine,calveswereselectedtofeedthreemonths,dividedintotwopartsthatcontainedbeforewean
4、ing(birthto2monthsofage)andweaning(3months),calvesweregived6litersofmilkeverydayinbeforeweaning,3timesfeedingeverydayandeverytwoliters,pelletfeedandwaterwerefedadlibitum.Beforeweaning,weight,bust,bodyheight,bodylength,thecircumferenceandbodytemperatureofthreekindsofcattlewereme
5、asured.Thesametime,normalcattle,positivecattleandnegativecattledailygainwere0.67,0.68,0.69kg,analysisofvariancefoundthatthedifferencewasnotsignificant(P>0.05).Afterweaning,thecowsweredividedintothreefeedinggroup,dailygainofthreegroupswere300,600,900g,pelletfeedprovidedthenecess
6、aryenergy,alfalfaandwateradlibitum,testedweight,bust,bodyheight,bodylength,thecircumference.Afterweaning，dailygainof300ggroupofnon-transgeniccattle,transgeniccattleandnegativecattlewhichdailygainwere0.92,0.94,0.89kg,thedifferencewasnotsignificant（P>0.05）,.Dailygainof600gand900g
7、groupofnon-geneticallymodifiedtransgenicpositiveandnegativecattleweightgainwasalsonosignificantdifference.Threefeedinglevels,bodyheight,chestandotherindicatorsofnon-transgeniccattle,transgeniccattleandnegativecattlewhichPvaluesaregreaterthan0.05,thedifferencewasnotsignificant..
8、Test:Nutrientdigestibilityofturnhumanalpha-lactalbumin
