KHOA HOC C 6 N G NGHE
AIMH HUQIMG CLIA BO SUIMG CAC MGUOIM PROTEIIV K H A C IMHAU TROIMG THIJC AIM HdiM H Q P CUA
K H A U PHAIM DEIM TAIMG K H O I LUQIMG V A HIEU QUA KIIMH TE IMUOI BO V O BED T A I EA K A R , D A K L A K
Truong Tin Khanh' T6MTAT
Nghien ciru nay dupe bo tri nhim danh gia anh huong ciia viec thay the- nguon thirc an giau protein trong khau phan thirc an h6n hpp 15,5% protein tho sir dung de nuoi bo vo beo hai nhom lai Sine! va Fl (LS x Br) la bot ca va bpt la cay hp dau. Ket qua nghien cuu cho thiy 1) thay th^ hoan toan thuc an giau protein la hot ca bing bot la cay keo dau khong anh huong dang k^ den lupng an vao va toe do tang trong cua bo v6 beo;
2) v6 beo bo thjt bing phuong phap cho an tu do co hoa thao va bo sung thirc an h6n hpp co chira 15,5%
protein tho (ca hai khau phan bot ca va bpt la cay keo dau) cho ket qua tang trpng kha cao: bo lai Sind dat 795,22 - 801,33 gam/ngay va bo lai Fl (LS x Br) tAng tir 870,11 den 882,33 gam/ngay; trong ca hai phuong thirc nuoi bo lai Fl (LS x Br) luon co tang trong cao hon so vdi bo lai Sind hieu qua kinh te cua hai 16 sai khac khong dang ke.
T\x]sh6a: Ngudn protein, botca, bot la cay keo dau, vd beo, lai Sind, Fl(LSx Br).
LDATVANDE
Nudi vd beo bd da va dang trd thinh mdt nghe mang lai cd hiOu qua kinh te k h i cao cho mdt sd lupng khdng nhd ndng hd tai Ea Kar. Theo ket qui dieu tra "Su chap nhan cd trdng 2010" ciia du in FAP cho thay cd khoing 274 hd dang nudi vd beo bd trong huyOn, thu nhip trung bmh tir vd beo bd cua cic ndng hd niy udc tinh 55% tong thu nhap ciia nong hd CTruong Tan Khanh v i cs., 2011).
Bd vd beo thudng duoc nudi nhdt vi cung cap tinic an tai chudng, tir 80 -100% cd tuoi dupe cung cap tir cd trdng. Thiic an tinh li ngudn thirc an khdng the tiiid'u dupe trong vd beo bd thit. Cac du an trudc day nhu du in Da dang hda ndng nghiOp, du in HO tiidng chan nudi vi shih ke (LLSP) da gidi tiiiOu mdt sd khau phin tinic an hdn hpp de nudi vd beo, tuy nhidn nhung khau phan niy deu cd mdt nhupc diem chung li gii thinh cao v i sii dung k h i nhieu thuc an ddng vat (hot ci).
De giiip ndng dan cd thdm cic chpn lira phu hpp vdi di^u kiOn sin xuat cua minh, de tii "Nghiin cuu anh ciia bd sung cic nguon protein khic nhau tiong tiitic in hdn hop ciia khau phan den tSng khdi luong vi hiiu qui kinh ti'nudi bd vd beo tai Ea Kar, Dik Lik da duoc thuc hiOn.
Muc tiiu cua de tii:
Dinh gii inh hudng cua bd sung cic ngudn protein khic nhau vio thirc an hdn hpp trong khau phin den lupng thiic an an vio, khi nang tang khdi lupng vi hiOu qui kinh te cua nudi v6 beo bd tiiit lai Sind va bd lai Fi (Lai Sind x Brahman).
Cung cap cac lira chpn khac nhau de ndng dan cd the chpn de ap dung phii hpp vdi dieu kiOn sin xuit ciia hp.
I . VAT UEU VA PHUONG PHAP NGHIEN CUU
Ddi tuong nghiin cuu: Bd lai Sind (LS) vi bd lai Fl giua lai Sind vi Brahman (Fj) tir 21 24 thing tudi.
Vit lieu nghiin cuu. Cic khau phin thirc an hdn hpp vdi ngudn proein khic nhau; ket qui phan tich thinh phin hda hpc cua cic thiitc an thi nghiOm dupe trinh biy d bang 1.
Bang 1. Thinh ph£
Bot la ho dau Co sa tuoi Thuc an hon hop
VCK (%/kg)
88,00 19,15 88,55
in dinh dudng thiic an
Protein tho (%/kg so vcri VCK)
21,15 9,80 15,5
Nang luong (kcalE/kgTA)
2465 533 2500 Gii tri dinh dudng cua cac thiic an khic sii dung trong tinic an hon hpp dupe tinh toin dua trdn sd liOu Khoa Chan nuoi Thu y, Trudng Dai hpc Tay Nguyen
KHOA HOC C 6 N G N G H £
trong bing gii ti-i dinh dudng thirc an do Vii n Chan nudi cdng bd 2001.
Dia diem nghien cuu: Tai xa Ea Kmut, huyOn EaKartinhDikLik.
Thdi gian nghien cihr. tir nam 2009 - 2010.
Phinmg phap nghien cim:
Bd bi till nghiem:
Thi nghiem dircrc hi) tri tiico kiOu phAn Id ngau nhidn. Bd thit hai nhom gidng lai Sind v i l"i(Br x LS) ducre nuiii voi khau phan tiiirc an xanh la cd sa, bd sung thiic an hon hcrii co ty li- protein thd 15,5%, vcri ngudn cung ca[) protein khiu- nhau la bdt ca (khau p h i n 1) va bdt l i ciiy hp dim (khau phan 2). So dd bd tri n h u sau ( b i n g 2):
B i n g 2. So dd bd ti-i tiii nghiQm Lo thi nghiem
Bd tri gia sue Giong bo Sdlupng bd thi nghiem (con)
Tuoi (thang) Khoi lupng trung
binh (kg/con) .\u6i duong Thirc an hon hpp
sir dung Co boa thao
(co sa) Nude uong
Thdi gian
la
LS
5
lb Fi(Br xLS)
5
2.1
LS 5
2b Fi(Br xLS)
5 2 1 - 2 4
216,58 243,44 TAHH 1 (bdt ca) cho an 3
kg/ngay Cho an tu do
(Ad libitum) Tudo
212,68 239,25 TAHH 2 (bpt la hp dau) cho
an 3 kg/ngay Cho an tu do (Ad libitum)
Tudo 90 ngay
An tu do: cung cip thuimg xuyen tinic ^ tiong ming, debd luc nio cung cd thuc in
Thiic an hon h p p tu tidn trdn k h i u p h i n dua v i o c i c nguon thirc an s i n cd tai dia phuong, thOrc an nang lupng chii yeu l i c i m gao, ngd va hot s i n , ngudn cung cap protein tiid chu ydu tir bdt ca (khau p h i n 1) v i bdt l i keo dau (khau p h i n 2). G i i tii dinh dudng ciia khau p h i n : nang lupng trao doi ciia ca hai khau p h i n xap xi 2500 K c a l / k g VCK, protein thd l i 15,5%.
Quy tiinh nudi dudng bd thi nghiem
Ld la, lb: Cho an tu do cd sa va bo sung thiic an hon hpp tu trdn (TAHHl) cd 15,5% protein thd, vdi
ngudn protein tir bdt ci, sd lupng cho an tdi da 3 kg/con/ngay.
Ld 2a, 2b: Cho an tu do cd sa va bo sung thirc in hon hp|i tu ti-pn CrAHH2) cd 15,5% protein tiio, voi ngudn protein tir bdt li keo diu vdi sd lucmg tdi da 3
Bing 3. Khiu phin Uiiirc an hdn hpp Khiu phan
Thanh plidn thirc an Cam gao (%)
Nk'o (%)
Bpt sin (%) Bpt la keo dau (%) Bpt ca (%)
Muoi (%) Klioang Uri'iX)
Gia tri dinh dudng Protein tho (%) Nang lupng ME (Kcal)
Gia thanh (dong)
TAHHl (prtein tir
h')t en)
25,00 32,00 35,00 .S,00 0,.'")0 1.00 1,50 15,50 2495,00 4430,00
TAHH2 (protein tir bot
la ho dau)
22,00 25.00 35,00 15,00 0„50
1,00 1,50 15,50 2486,60 3495,00 Cic chi tieu theo ddi
Bd tiii nghiOm dirc>c nudi c i the, c i c chi tidu theo ddi n h u sau:
Lumig ^1 vio: Luong an v i o ciia bd dupe theo ddi b i n g each can luong thuc an cho an trong ngay va lupng thirc an thira vao s i n g scim hdm sau trudc khi cho an thirc an nicri.
Khdi lupng ca the': bd dupe can vao buoi sing khi chua cho an, can lien tuc trong ba ngay de lay so liOu trung binh.
Tdc d0 ting khdi lupng tuyet dot tdc dp tang ti-png tuyOt ddi dupe tinh theo cdng thiitc:
W,- W ,
TKL = (gam/con/ngiy) T 2 - T ,
Trong dd Wi, Wg li khdi lupng bd thi nghiem liic bit diu va ket thuc thi nghiem; Tj va T2 la thdi gian bit diu vi ket thuc thi nghiOm; DWG l i tang tipng tuyOt ddi tinh bing g/con/ngiy.
Hiiu qua kinh ti
Cac so sanh trong thi nghiem:
52
NONG NGHIEP VA PHAT TRIEN NONG THON - KY 1 - THANG 1/2012
KHOA HOC C 6 N G N G H £
So sinh sinh trudng ciia bd ciing mot nhdm giong vcri cic khau phan nudi khac nhau;
So sinh sinh tnrcrng ciia hai nhdm trong ciing khau phin nuoi gidng nhau.
Xif ly sd h'iu. Sd liOu thi nghiOm dircK: xir ly thong kd tren phan mem Minitab phien ban 11; cac so liOu trinh bay trong bai bao gom sii trung binh, sai so chuan (SE), sir dung T-Test de so sanh cac so trung binh viri do tin cay 95%.
Ul. KET QUA VA THAO KUAN
1. Lupng an vio ciia bd thi nghiOm
Lupng an vao ciia bd trong c.ic 16 tin nghiem khic nhau dupe trinh bay tren bimg 1:
Bing 4. Lucpng an vio hing ngiy ciia bd thi nghiem Lo thi nghiem
Thirc an hon hop (kg) Co sa (kg) VCK an vao
(kg)
Protein tho an vao (g)
M SE .M SE .M SE .\1 SE Tyle VCK an vao so vdi khoi lupng co the (%)
Ty le protein trong VCKanvao(%)
P
la 2,15'^
0,05 27, hV
1,4;') 7,10' 0,32 802,18
14,00 2,76 11,25
lb 2,95''
0,06 28,2:5'
1,26 8,01"
0.18 923,83
13,5 2,66 11,45
<0 2.1 2,17'
0,10 27.22'
2,26 7,13"
0,21 806,06
12,00 2,65 11,26 05
2b 2,84"
0,04 28,20''
1,43 7,91"
0,10 909,42
15,00 2,72 11,39
Cic chl so a, b, c chi su sai khic ciia so trung binh tiong ciing mot hing
Lupng an vio ciia bd d hai nhdm gidng khic nhau trong cung mot phuong thuc nudi dudng co su sai khic cd y nghia thdng ke (p<0,05), bd lai Sind luon cd lupng an vao thap hon so vdi bd Fj. Lupng an vio cua bd lai Sind d Id la li 7,10 so vdi bd Fj d Id lb li 8,01 vi bd lai smd d Id 2a li 7,13 kg VCK/ngiy/con so vdi bd Fi d Id 2b la 7,91 kg VCK/ngiy/con. Su sai khic niy cd Id chu yeu li do khdi lupng bd Fi cao hon so vdi bd lai Sind, mat khic, bd Fl tidu thu tinic an hdn hop cao hon ding ke so vdi bd lai Sind.
Ket qua d bang 1 cung cho thay khdng cd su sai khic ding ke ve luong an vao ciia bd cung mdt nhdm giong khi nudi 2 khau phan khic nhau. So sinh lupng an vio cua bd lai Sind nudi d 2 khau phin cho
thay lirmig an vao d la va 2a sai khac khong co y nghia (bo lai Sind d Id la la 7,10 kg VCK/con/ngiiy so vdi 16 2a la 7,13 kg VCK/con/ngay). Tucnig tu nhu vay lumig .in vao cua bo F, <V lb v.i 2b cung co lucmg an vao sai khic nhau khong c-(> y nghia (p>0,05).
Ty li' protein so viri VCK an vao co gia tri tir 11,25% diMi 1 l,3i)%, sai khac giira ciic 16 la kh6ng co y nghia thiing ke. Tlieo ticHi chuan an NKC, 1996, nhu cau ciia protein cho bo v6 bi-o can tu 9,5 den 11,5%
(so viri VCK an viio) di- bo co the dat tang trpng tir 0,8 - 1,2 con/ngiiy, nhu vay ty le protein trong khau phan thi nghiem nay la dat tieu chuan. Ty 10 VCK an Vcio so vcri kli6i hrcyiig co thi- trong thi nghiem cua 4 16 tir 2.5 - 2.(m,. WcrncT va Peter, 2000 cho biet bo v6 beo khi cung cap day dii tiiirc an cliat luc.mg cao c6 tlie cin vao mot hipng \'CK tucmg ung tu 2,5 - 3,0% so vcri klioi lin.mg ciia ca the, nhu vay trong tiii nghiem nay lumig an vao ciia hi) thi nghiem dat yeu cau.
2. Khi nang tang khdi lupng cua bd
Kha nang tAng khcii luc.mg cua bo thi nghiem dupe trinh biy d bang 5.
Xet anh huong cua cic nguon protein khac nhau bo sung vao khau phan den tang khoi lupng cua bo thi nghiOm cho thay:
Tang khiii lupng cua bo lai Sind d hai 16 la va 2a cd sai khac kh6ng cd y nghia vcri p>0,05; 16 la:
23,86 kg/thing (tuong ung 795,22 g/ngay), 16 2a:
24,04 kg/thang (tuong ung la 801,33 g/ngay).
Tang khi)i lupng cua b6 Fi ciing co quy luat tuong tu, sai khac giira hai 16 la kh6ng c6 y nghia: lb tang trpng: 26,47 kg/thang (882,33 g/ngay); 16 2b:
26,10 kg/thing (870,11 g/ngay).
Ket qui nay cho thay viOc thay the tat ca protein tir hot ca trong khau phan bing hot la cay keo dau (vin giir nguydn ham lupng protein ciia khau phin li 15,5%) kh6ng lam inh hudng nhieu den tdc dp tang khdi lupng cua bd nudi vd beo. Dieu nay co the ly giai: ddi vdi dpng vat nhai lai chat lupng protein kh6ng phu thupc nhieu vio su cd mat diy du vi can ddi cua cic axit amin kh6ng thay the m i 10 thupc phan Idn vao lupng nito trong khau phin cung cip de vi sinh vat tong hpp cic axit amin vi protein. Trong trudng hpp niy ty lO protein thd, nang lupng...ciia hai khau phin nhu nhau ndn tdc dp tang khoi lupng cua bd khdng sai khac nhau. Vu Chi Cuong vi cs., 2007 thi nghiOm tren bd lai Brahman 18 thing tuoi, khi cho an khau phin cd him lupng protein thd 175 g/1
KHOA HOC C d N G N G H l
kg VCK viri mire bdt ca bii-ii (long tir (YX>. MWo, 20%, tang khdi lin.mg trong thi nghiem nay cao h(m so voi 30% cho thay tang khdi lumig giira c i e 16 1 (0%), 16 3
(20%) va 16 4 (3()'X)) cd s.ii khiu- kh6ng co y nghia, mire tiing khdi lin.mg trung binh tu 625 - 705 g/ngay;
dicHi do eho thay thay thi- nguon in'otein tho tir hot c.i b i n g cac nguon khac Oi<it b6ng, urr) kh6iig iiiih huimg nhiini di>n t.iiig khoi lin.mg c-ii.i bo. Kd qu;i
cac thi nghiem sir d u n g i)liu pham n6ng nghiep de v6 beo bo cii;i cac- t i c gia U' Vidt Ly va cs., 1996; Vu Van Npi va c-s., 199<); timg trpng cii.'i bd v6 beo trong cic thi nghiem nay c hi tir 0,51 dvn 0,58 k g / n g a y va tuong dmmg win ki-t c|ii.i nghii-n cini ciia Vu Chi Cucmg va c-s., 2007 (inng khdi hrmig tu 730 - 815 g/ngay).
Bang 5. Tang klidi lupngjnia bd thi^nghiOm I,(.IN
Khiii lupng dau ky (kg) Khiii luong ki't time (kg) Tang khoi hnmg/th.ing (kg) Tang khiii hnmg/ngay (g)
P
Mean SI-;
Me.in Si-,
M e . i l l
SI-;
la 239,.">(i
4,14 311,13
,3,08 23,8(;'
0.47 79,^).22
lb 280,1.^)
3,92 359,56
^ 2.44 2(i.47''
2a 243.13 3ir),2.") :5,()8 21.04' 0,61 ^ 0,17
().(r)
2b 284.23
4.79
;i62,.>i 3,41 26,10*'
(),f>9
870,11
C •</< • (•/;//(-aJ a. h. c. doc-.K • li.ing c7;/.s-.v/ A7;<7c• ciia c ac • gia tii trung binh co v nghia ir mm• /;v o, ().'>, Xet kha nang tang khdi lumig ciia b6 timg nh6m
gidng cho thiiy trong cung mot phinmg thirc nuoi duc'mg bo lai Bndimaii lu6n co toe do tang khdi lumig cao hem so wn bo lai Sind: 16 l b Oai Sind) co tiic do tang khoi lupng la 26,17 k g / c o n / t i i a n g trong khi bo d 16 la (Brahman) chi dat 23,86 kg, tucmg tir nhu vay ddi vdi 16 2b co tdc do tang khiii luong la 26,10 k g / c o n / t i l i n g so vdi Id 2a la 24,04 k g / t h i n g , sai k h i c nay l i co y nghia thdng ke d mire p<0,05.
Tir ket q u i n i y cho thay, n d n g dan hoan toan cd the phat trien cay cd ho dau va sir d u n g no l.im ngudn thuc an c u n g cap i^rotein chii yeu cho bd v6 beo de giam gia t h a n h thirc an chan nu6i ma tang trpng cua bd k h 6 n g bi i n h hucVng.
Hieu qui sir dung thuc Un
Ket qua d i n h g i i ve liiOu q u i sir d u n g thirc an cua bd trong c i c Id thi nghiOm ducrc trinh bay cr b a n g 6. HO sii tidu tiin thirc an cho 1 kg tang trpng t r o n g thi nghiOm d tat ca cac Id tir 8,89 - 9,09 k g VCK cho 1 kg tang t r o n g . Sai k h i c ve hO sd tidu tdn thirc an ciia bd d tat c i c i c Id l i k h d n g d a n g k e . C i c nghien cim trudc d i y cua P h a m Kim
qua t r o n g thi iighieiii n.iy tinmg ducmg vin ket q u i nghien ciru noi tren.
B i n g 6. Tidu tdn thirc an cho tang khdi lupng Loai thirc <1n
Thirc .in hon hci\) Co hoa thao
(ci) s.-'i tinri) v.-it chat
kho I'r olein
F
D(m VI
tinh la L6 lb I Lo 2a L6 2b (kg) .70 !,:i4 2,71
(kg) 34.14 31.99 I 33,97
3,26
32,41 (kg) 8,92' : 9,08' 8,81>'
(g) 1009" 104; lUHi
9,09"
1045"
^0.05
C \u • (•/;// (\n a. b. c, d d c •./( • hing chi sai khic ciia cacgi:t Ul trung binh co v nghia dmucp<0,05.
Udc tinh hiiu qua kinh ti'
Trong phan udc tinh hiOu q u i kinh te nay chi dua trdn cac chi phi true tiep trong q u i trinh sin xuat bd thit (tiiuc an, lao ddng...) m i khdng tinh dupe lao dpng q u i khir trdn ddng cd v i khi'u hao tai sin co dinh. Ket qua nghien cim cho thiy:
Lpi nhuan tir nudi bd vd beo b i n g khau phin sir C u o n g va cs., 2001 cho ket q u i l i 6,3 - 7,9 k g dung ngudn protein tij bdt l i cay hp dau cao hon so V C K / 1 kg tang trpng; Vu Chi C u o n g va cs., 2001 vdi khau phan sir d u n g bdt c i . Loi nhuan ciia 16 2a cho ket qua tir 6,2 15,9 k g V C K / 1 k g t a n g trpng, (bd lai Sind sir dung khau phan bdt l i hp dau) la t r o n g tidu c h u a n NRC ydu c i u dat 7,1 - 10,2 k g 435.542 d d n g / c o n / t i i a n g , trong luc dd Id l a (bo lai V C K / k g t a n g trpng. Vu Chi C u o n g va cs., 2007 cd Sind su d u n g khau phan bdt c i ) chi dat 370.912 k e t q u i l i 8,17 9,23 k g V C K / k g t a n g trpng, k e t d d n g / c o n / t i i i n g , tirong tir n h u vay Id 2b dat 437.509
54 NONG NGHIEP VA PHAT TRIEN NONG THON KY 1 - THANG 1/2012
KHOA HOC C 6 N G N G H I
dong/con/tiiing, trong khi 16 lb chi dat 356.062 dong/con/tiiang. Su chenh lOch niy chu yeu do gia thinh thirc an hon hpp cua 2 16 khic nhau: gia thanh 1 kg thirc an hon hpp cho bd d khau phin mpt (sir dung hot ci) li 4.430 ddng/l kg thirc an, trong khi do khau phin hai (sir dung bpt li) la 3.495 ddng (bing 7).
So sinh hiOu qua vd beo giOra hai giiiiig cho thay sai khic vd hiOu qua kinh ti> giira hai gidng the hii-ii
kh6ng ro ret, bo lai Br;ihman ni.ic dau c6 tdc dp tang trpng cao hon, chi i)hi thirc an sai kh.ic kh6ng dang ke so v(n bo lai Sind nhung Im nhuiin kh6iig cao hem b6 lai Sind. Ket qua Uieo doi thi nghiem cho thay b6 lai Br.-ihman luon co niirc tii-u thu thirc an hdn hirp CU) hem so viri bo lai Sind ni-n chi phi thirc an cao hem.
(lia tri ngay c6ng nu6i v6 bio l)o trong n6ng hi) kha c;io dat tir 2,^)82.S() diMi 29449!) dong/ngay.
Ul TN
Bing 7. Udc tinh hiOu qui Chi phi cho 1 con gia sue
Mua gidng (dcnig) Thirc an HH (diuig)
Phan b6n cho cd trong (dong) C6ng lao dong (diing)
Tong chi (d/tiiang) Thu tu 1 con gia sue
Bin bd (ddng) Phan chudng (dong) Tong thu (dong) Lpi nhuan
Lpi nhuan (ddng/con/thang)
Lpi nhuin kh6ng tinh c6ng (ddng/con/thang) Gia tri gid c6ng (ddng/gid)
Gii tri ngiy cdng nudi vd beo bd (dong/ngiy)
la 8.-384.(iOO 857.205
(^O.OOO (i7,S.()(K) 9.976.805
10.889.550 200.000 11.089.550 370.915--' 595.915 33.106 264.851
k i n h tO
lb
9.805.250 1.176.165 60.000 675.000
11.716.415 12.584.600 200.000 12.784.600
356.062''' 581.062 32.281 258.250
2a
8.509.550 682.574 60.000 675.000 9.927.124 11.033.750 200.000 11.233.750 435.542"
660.542 36.697 293.574
2b
9.948.0.50 893.322 60.000 675.000 11.576.372 12.688.900 200.000 12.888.900 437.509^
662.509 36.806 294.449 IV. KET LUAN VADE NGHI
Thay the ngudn thiic an giiu protein tir bdt c i sang hot li ciy hp dau trong khau phin thirc an hon hpp de nudi bd vo beo khdng lam inh hudng den lupng an vio, tdc dp tang trpng, hiOu qui su dung thiirc an cua bd.
Lupng thu nhan thirc an cua bd lai Fi (LS x Br) trong c i hai khau phin ludn cao hon so vdi bd lai Sind. O Id mdt (khau phan bdt ca) bd lai Brahman li 8,01 kg VCK/con/ngiy, bd lai Sind li 7,10 kg VCK/con/ngiy; d Id hai (khau phin bdt li) bd lai Brahman la 7,91 kg VCK/con/ngiy trong khi dd bd lai Sind li 7,13 kg VCK/con/ngiy.
Bd thit Fi(Br x LS) vd beo bing cich cho an tir do cd hda tiiao va bo sung thiic an hon hpp cd chira 15,5% protein thd cho tang khdi lupng 26,10 26,47 kg/con/thing, cao hon so vdi bd lai Sind cho an ciing khau phin, bd lai Smd dat tir 23,86 den 24,04 kg/con/thing.
Lpi nhuan nu6i bd vo beo tir khau phin thirc an hdn hpp cd nguon protein tir hot li cay hp dau (khau phin 2) cao hon so vcri tir bdt ci (khau phin 1), lpi nhuan nu6i tir khau khau phin 1 tir 356.062 den 356.062 ddng/con/thing, khau phin 2 tir 435.542 den 437.509 ddng/con/thang.
D4 nghi
Khuyen khich n6ng dan trdng co hp dau, sin xuit bpt li vi sir dung lim thirc an giiu protein tiong khau phin vo beo bd.
Tiep tuc nghidn ciru sii dung hpp ly cic ngudn thirc an sin cd, re tien khic trong khau phin nudi bd thit; tang cic lira chpn ky thuat khic nhau vi hiOu qui kinh te cho ngudi chan nuoi.
TAI UEU THAM KHAO
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KHOA HOC CbNG N G H l
khoa hpc ciia dc' tai nghiiMi cim kho.i hpc 08-05.
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.')'. Pluuii Kim i 'irojig. \'// C In Cuimg, I'// Van Noi.
Dinh \':ln Tuyen. Nguyen Ilianh Tnmg, 2001.
Nghien cmi sir dung nmi liia Iroiig kh.iii phan bo thit.
Cac bio cao khoa hoc cu.i de tai nghien cini khoa hoc 08-05. Trang 174-187.
•/. /./•' Met Iy. Vii Win Noi. \'u Chi Cmmg, Ph.vn Kim Cirong .\i:inen Qudc Dat (l.'i9(>). Nu6i bc^ lai huimg tiiit bang tiiirc an bo sung tir ngudn phu pli.im
n6ng nghiOp tiii mien Trung. Ket qua nghidn cihi kho.-i hoc 1994 - 1996, trang 135 - 140.
5 Vii Vin Ndi, Pham Kim Cuong, Dinh Vsn ruyen, 1999. Sir dung phu phi' pham vi ngudn thiic an s.iii CO tai di.i phinmg de nudi vd beo bd. Bio cao khoa hoc- chan iui6i thii y, llui- 28 - 30 thing 6 nam 1999. Trang 2.'")-29,
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7. Tnnmg Ian Khanh, Nguyen Ngoc Anh, Wenier .Stin; 2011. Smallholder catile fattening in Vietnam. Technical Advisory fo IFAD.
rS: irr/-/;cr \V. Star and Peter .\l. Home, 2000.
Developing forage technologies with smallholder farmers. How to grow, manage and use forages.
EFFECT OF SUPPLEMENTATION OF CONCENTRATE WrFH DIFFERENT PROTEIN SOURCES ON LIVE WEIGHT GAIN AND ECONOMIC EFFICIENCY OF FATFENING BEEF CATTLE
IN EA KAR, DAK lAK
Truong Tan Khanh Summary
The study was designed to evaluate the effect of supplementation of concentrate with different protein sources on live weight gain and economic efficiency of fattening beef cattle (cro>s -bred Sind and crossbred Fl (LS x Br). The protein sources were from fish meal and legumes' leal meal. The legumes used were leaf meal of Leucaena leucocephala. The results of study showed: 1) Replacing protein from fish meal by legume leaf meal in the concentrated feed for fattening cattle was not significant effect to body weight gain and feed intake of cattle; 2) Ad libitum high quality grass of Panicum maximum and supplying concentrate feed with 15.5% CP for fattening cattle, the body weight gain of Sind was 795.22 - 801.33 gram/day and Fl (LS x Br) was 870.11 to 882.33 : 3) in both diets, the grow rate of Fl (LS x Br) was significant higher than Sind but the benefit was not very different.
Keywords: Effect, protein sources. Gsh meal, legume leaf meal Sind, Fl (LSx Br), faUening.
Ngudi phan biOn: PGS.TS Mai Van Sinh
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