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Ntxim ntawm kev noj haus vitamin E rau thom khwm txawv ntom ntawm carp Performance(2)
1.2 ntsuam xyuas thiab tus noj thiab cov tswj siv 2 × 3 factorial tsim, lub tsev lag luam ntawm ob ceev (15 g/L, 60 g/L) thiab vitamin E 0,62.5 mg/kg thiab 187.5 mg/kg pub peb, ib tag nrho 6 kho tus neeg nyob ua ke, sib replicates peb. Jian carp sim rau lub batch qub ntawm chaw ua taus zes dag yearlings carp si, totaling 5000, ua ntej kuaj tau de robust, teeb specifications juveniles. Tuav hauv tsev iav thoob dej yug ntses, noj noj protein ntau cov ntsiab lus ntawm 37% ntawm txoj kev kuaj no noj, txhob pub satiation, nyeg 15 d. Test micro dej (dej aerated), pib rau qhov xyaum ua tej yam, cov random paug tawm cov tswjhwm tub ntxhais hluas ntses hauv tuav tso tsheb hlau luam
Kom thoob dej yug ntses nyob hauv tsev iav, 4/4 thiab 1/4 feem txha ntses (ntses mantissa ib lub tog raj kheej, thiab tib yam nyhav kom muaj nuj nqis, raws li ib yam ntawm inflation, xws li chaw sau xwb), kho rau thom khwm ceev txhua lub lis piam ob sampling tus tsim daim tseem ceev. 8-lub limtiam noj mus sib hais. Ua ntej lawv kuaj, tsheb noj 1 d, tom qab xaiv kislas, teeb specifications carp weighed (yog mus 0.01 g) thiab tus nqi ntawm lub cev ntev, random stocking thaum noj tau tus nqi ntawm 2.5% rau 4.0% ntawm lub cev hnyav, nyob ntawm tus dej kub, pub rau cov neeg mob kom tsim nyog cov kev kho me ntsis. Tej yam ua kua 2 times (09:00 thiab 17:00) txhua hnub, tom qab noj, muab kab nuv ntses, uas, xam xyuas cov khoom noj kom tsawg. Thaum kuaj cov dej kub muaj 23 ~ 30 ℃, pH yog (7.1 ± 0.1), neej pa yog siab tshaj 5 mg/L, ammonia concentration 0.5 mg tsawg dua los sis L. 1.3 qauv sau thiab Performance index muab xam ua ntej sampling fasting 24 h, rov tso ib across xaiv ntses 50 weighed tau, ntsuas kev loj npaum li cas (SGR), noj noj npaum li cas (nkaus) thiab ce yuag coefficient ntawm variation (CV). Payment raws li nram no: kev loj npaum li cas (% / d) = (lnWt-lnW0) × 100 / t; pub noj npaum li cas (% / d) = 100 × kuv / (W0 + Wt) / 2 × t; luj coefficient ntawm variation (CV, %) = sib txawv / txhais × 100; qhov twg kuv qhuav nyhav txog pub kom tsawg, g; W0 thiab Wt, feem ntawm lub luj tag nrho cov ntses thaum ntxov thiab lig, g; t yog pes tsawg hnub los soj ntsuam, d. 1.4 tawm soj ntsuam tau expressed ua phem ± txheem. Stocking ntom ntawm sib piv t xeem, sib txawv uas txawv muaj ntau seem comparative tsom (ANOVA) txoj kev kuaj uas variance, qhov kev txawv, txawv qhov sib piv ntawm cov pab tsom xam qhov txawv yog qhov twg los tus Duncan ntau yam, uas P < 0.05 raws li cov kev sib txawv qhov lawm.
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