nyuj yog ruminants thiab ib tug staple ntawm lawv cov zaub mov yog nyom, uas yuav siv tau lwm yam ntaub ntawv, xws li quav nyab los yog silage. Tab sis thaum lub caij ntuj no yob ib ncig thiab pasture nyom dhau los ua tsis tshua muaj, quav nyab ua qhov tseem ceeb hauv kev noj zaub mov ntawm cov tsiaj no. Cov kua mis tawm thiab qhov zoo ntawm cov khoom nqaij yog nyob ntawm qhov quav nyab qhov ntau thiab, qhov tseem ceeb tshaj, ntawm nws qhov zoo. Tab sis cov nyuj yuav tsum tau muaj quav nyab ntau npaum li cas los noj kom muaj mis nyuj lossis nqaij?
Nws nyob ntawm ntau yam, xws li qhov hnyav ntawm tus nyuj, qhov zoo ntawm cov quav nyab, thiab theem ntawm kev tsim cov tsiaj(txawm nws cev xeeb tub, qhuav., lactating, thiab lwm yam). Yog li, tus nyuj cev xeeb tub 1,300 phaus yuav noj ntau dua li tus nyuj sib dua, thiab tib txoj cai siv rau cov nyuj lactating.
Muaj ob peb txoj cai ntawm tus ntiv tes xoo los pab kwv yees kev noj zaub mov txhua hnub ntawm nyuj rau ntawm cov teeb meem qhuav siv cov khoom noj zoo sib txawv thaum cev xeeb tub lossis lactating:
- Thaum cov zaub mov tsis zoothiab nyuj tsis lactating, lawv haus 1.8% thiab lactating nyuj txog 2.0% ntawm lawv qhov hnyav ntawm qhov qhuav qhuav.
- Thaum cov zaub mov zoo yog qhov nruab nrab, cov nyuj uas tsis yog lactating yuav noj li ntawm 2.0% mus rau 2.1%, thiab lactating nyuj txog 2.3% ntawm lawv lub cev hnyav ib hnub twg ntawm cov khoom qhuav. lub hauv paus ntawm cov zaub mov ntawd.
Yuav ua kom yooj yim, peb tuaj yeem hais tias qhov nruab nrab,tus nyuj yuav noj li 2% ntawm nws qhov hnyav hauv quav nyab ib hnub. Yog li, piv txwv li, tus nyuj qhuav qhuav. hnyav 1,300 phaus yuav noj li 26 phaus ntawm cov nyom zoo ib hnub los txhawb thiab loj hlob nws calf.
Dab tsi yog qhov sib txawv ntawm kev noj cov khoom qhuav thiab As-Fed Basis?
Kev pub zaub mov qhuav yooj yim txhais tau tias cov zaub mov tsis muaj dej noo. Tab sis vim nws tsis tuaj yeem "tshem" tag nrho cov dej noo los ntawm cov quav nyab ua ntej pub rau nyuj, koj yuav tsum ua lej me ntsis kom paub qhov tseeb "raws li" tus nyuj yuav noj.
Tau tib tus menyuam cev xeeb tub uas hnyav 1,300 phaus. Nws yuav siv li 2% ntawm nws qhov hnyav hauv quav nyab ib hnub, uas yog 26 phaus. Tab sis muab hais tias cov 26 phaus ntawm quav nyab yog ua raws li 100% cov khoom qhuav thiab cov nyom nyom muaj li 10% noo noo, ces cov quav nyab tsuas muaj 90% qhuav. Qhov no txhais tau tias nyuj yuav noj kwv yees li 29 lbs. (26 lbs. / 0.90) ib hnub ntawm qhov "raws li-fed" hauv paus.
Ntawm qhov tod tes, thaum cov neeg ua liaj ua teb npaj cov khoom noj khoom haus uas lawv xav tau rau lub caij ntuj no, lawv tuaj yeem kwv yees lawv cov nyuj cov khoom noj ntawm 35-40 phaus quav nyab ib hnub. Vim li cas qhov nyiaj seem? Tsuas yog vim qee qhov quav nyab tuaj yeem lwj thaum khaws cia, khib nyiab, lossis tsis kam lees thaum lub sijhawm pub mis.
Vim li cas thiaj tseem ceeb rau suav nyab laj rau nyuj?
Kev kwv yees tus nqi ntawm cov zaub mov uas nyuj noj yog qhov tseem ceeb txhawm rau txhawm rau kwv yees lawv cov kev xav tau thaum lub caij ntuj no. Qhov zoo ntawm cov quav nyab tseem yog qhov tseem ceeb, vim qhov no txiav txim siab cov zaub mov noj.
Qhov no yog vim cov zaub mov zoo dua muaj cov khoom noj muaj txiaj ntsig ntau dua, xws li cov protein, carbohydrates, cov zaub mov, thiab cov vitamins. Qhov no ua rau nyuj muaj peev xwm ua tau raws li lawv cov kev xav tau kev noj haus, tab sis lawv kuj yuav siv quav nyab ntxiv.
Qhov no tau piav qhia raws li hauv qab no: cov zaub mov zoo dua ferments sai dua hauv rumen kom tus nyuj zom nws sai. Raws li qhov tshwm sim, kev noj zaub mov nce ntxiv.
Yog li ntawd, cov khoom noj muaj txiaj ntsig zoo yog qhov tseem ceeb rau cov neeg tsim khoom thiab tus nyuj, vim qhov no thaum kawg txiav txim siab qhov zoo ntawm cov nqaij lossis mis nyuj uas tsim los ntawm nyuj.
Xov Xwm Kawg: Ntau Tus Nyuj Noj
Cov nyom yog cov nyom nyom (nyom thiab alfalfa) uas tau txiav, qhuav, thiab ua tiav rau hauv pob. Nws yog tshwj xeeb tshaj yog nrov nrog nyuj tom qab lub caij ntuj no los, raws li cov nyom nyom tshiab tsis siv tau lawm. Yog li ntawd, nws yog ib qho tseem ceeb rau cov neeg tsim khoom los kwv yees cov quav nyab lawv cov nyuj noj ib hnub kom tau raws li lawv cov khoom noj khoom haus thaum lub caij ntuj no. Qhov nruab nrab, tus nyuj yuav noj li 2% ntawm nws qhov hnyav hauv cov zaub mov, tab sis qhov kev kwv yees no yuav txawv nyob ntawm seb yam xws li nws theem ntawm kev tsim khoom thiab qhov zoo ntawm cov quav nyab.
