泌乳水牛泌乳期能量、蛋白質(zhì)、鈣磷需要量的研究.pdf

1、廣西大學(xué)碩士學(xué)位論文泌乳水牛泌乳期能量、蛋白質(zhì)、鈣磷需要量的研究姓名：徐如海申請學(xué)位級(jí)別：碩士專業(yè)：動(dòng)物營養(yǎng)與飼料科學(xué)指導(dǎo)教師：鄒隆樹2001.5.1￡!查莖堡蘭量曼壟查——————●———————————————————————●——————————_—_————————r—————————一一AbstractTenhealthylactatingbuffaloesfeedingonthesamedietconsistedofbeer

2、meal、cassaramealelephantgrassandconcentratedfeedwasdividedintwogroupst(1studytheirneedofener93，proteincalciumandphosphorusduringthelactatingperiodTheamountofbeermeat，cassaramealconcentratedfeedofonegroupwas80％percentofth

3、attheothergroup，thetrialanimalseatelephantgrassadlibitum2x2factorscross—feedingtrialwasusedRespiratorytrialanddigestibilityandmetabolismtrial“口qascarriedoutrespectivelyduringthemiddletermofeveryfeedingtrialperiodTheperio

4、dofeveryfeedingtrial，respiratorytrial，digestibilityandmetabolismtrialwas30days，7days3daysTolactatingbuffaloes，thestudyresultsshowedthat：(1)thedigestibilityofdrymatteranddietenergywas6914％，6762％respectiVely；themetabolicra

5、teofgeneralenergyintakeanddigestibleenergyintakewas5467％and8032％respectiVeIy：theutilizationrateofmetabolicenergyformilkproductionwas3458％；thefastingheatproductionwas32006KJ／Wo”dtheheatincrementwas23896KJ／W“75d；themethane

6、anergvwasabout1O％ofgeneralenergyintake；therequirementofmetabolicenergy(MER、oflactatingbuffaloescouldbecalculatedbyequation：MER(KJ／d)=62303Wo75(kg)299I4FCM(kg／d)(2)thedigestibilityofdietproteinwas71，85％；utilizationrateofd

7、igestiblenitrogentomilknitrogenwas2763％；toproduce1kgFCM(milkfatpercentageis4％)，103399digestiblecrudeproteinwasneeded；netproteinutilizationwasO41；theequationtocalculatecrudeproteinrequirement(CPR)was：CPR(g／d)=823Wo”(kg)68

8、90FCM(kg／d)(3)thedigestibilityofcalciumandphosphoruswas3147％and3501％；theequationtocalculatetherequirementofcalcium(CaR)andphosphorus(PR)was：CaR(g／d)=006676LW(kg)381FCM(kg／d)；PR(g／d)。00479LW(kg)232FCM(kg／d)LWwaslivebodywe