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KHOA HOC C N G N G H | AlMH HUOIVG C O A CAC IULTC PROTEIIXI T H O V A X d THQ TRoivG KHALI PHAI\I D£IV P H A T T H A I mra, P H O T PHO, HYDRO SLIIXIFUA, AlVIOIXIIAC VA KHt IXIHA KilMH TU C H A T T H A I CLIA LQIV GIAI D O A M - KG Vfl Thi Khdnh Vdn', TVAn T h | Bich NgpcS Ph^m Himg Cudng", VQ Chi Cuong', Vfl Duong Q u ^ ^ Le Dinh PhOng* T6MTAT Nghi6n cuu nAy nhdm myc tifiu ddnh gid dnh hudng cua cdc miic protein vd xa th6 khdu phin ddn phit thdi nito (N), phdt (P), nhd kinh amoniac tir chdt thdi cua Ipn tir ^ kg Thi nghi$m dirge tidn hinh tr&n 30 Ipn lai Duroc x Fi (Landrace x Yorkshire) vdi khdi lupng ban ddu 34,7 ± 2,6 kg Thi nghidm duiyc thi^t kd theo kidu khdi ngdu nhi^n ddy dii vdi nhdn td khdi Nhdn td protein th6 kh^u phdn v6i nghidm thirc 17, 15 vi 13%; nhdn to miic xa di6 vdi nghidm thuc vd 10% Mdi don vi thi nghidm la m^t Ipn Miiu kh6ng tir hd ch^t Uiii dupe thu thdp dd xdc dinh phdt didi NH,, H^S va nh^ kinh MSu chSit thai dupe thu th§p dd xic djnh djc tinh h6a hpc cua chdt thai Kdt qua nghien ciiu cho th^y giam miic protein tir 17% xudng 15% da khdng dnh hudng ddn khS nSng san xudt, nhien tidp tuc giam xuong 13% da ldm giim khd nSng sdn xudt ciia Ipn (P