KHOA HOC KY THUAT T H C Y TAP X X S 6 1 - 2013
ANH KiriiiNG CUA VIEC TAY RdfA CHAT HOU cd TRlTdC KHI SAT TRUNG CHUANG TRAI
Ld Vdn Kinh', Phgm Duy PhSm', Trjnh Quang Tuyin^, Ddm Tudn Td' vd Nguyin Thi Hiran^
T6M TAT
D I ddnh gid dugc dnh hudng cua vi?c tdy nia chdt hOu co tnrdc khi sdt triing chuing tr?i, sdn chuang, vdch ngdn, iing dl tdi tien hdnh tai chuang nudi Ign thjt ciia Trung tdm nghifin ciiu Ign Thyy Phuang (sau khi d l trdng chuAng) tir thdng 5 den thdng 11 ndm2011.Thf nghi|mtrSn4Id: L6 1 dugrc nia bSng nude thdng thudng; L6 2 dugc rira bdng nude xd phdng; Ld 3 dugc nia bdng nude vdi ndng dp 15%; Ld 4 dugc nia bdng dung djch NaOH 2%. Ldy mSu trudc vd sau khi rira 6 gid de phdn tich cdc chi tiSu E.coli, Salmonella, t6ng s6 vi khudn hiiu khi, coliform.
Ket qud nghidn curu cho thdy phuang phdp nia chuong bdng dung dich NaOH cd hi^u qud hon so vdi cdc dung djch khdc, ldm gidm s l lugng vi khudn: E.coli (44,3 - 64.3 lan); Salmonella^ tdng sl vi khudn hieu khi (37.2 - 55.8 ldn); coliform (37,8 - 50,6 ldn) so vdi nia chuong bdng nude thudng, nude xd phdng vd nude vdi 15%.
Tir khoa- Chudng Ign, Sdt triing, Tdy rua
Effect of cleaning organic matters before disinfection in pigsty La Van Kinh, Pham Duy Pham, Trinh Quang Tuyen,
Dam Tuan Tu and Nguyen Thi Huong
SUMMARY
in order to evaluate the effect of cleaning organic matters before disinfection In pigsty (floors, walls and boots), an experiment was carried out at the fatterning pigsties of Thuy Phuong Pig Research Centre (after emptying the pigsties) from May to November 2011. Four experimental lots were tested with different cleaning substances. In the 1 " experimental lot, the pigsties were cleaned by water. Soapy solution was used for cleaning in the 2'^ experimental lot. Lime solution with concentration of 15% was used for cleaning In the 3"' experimental lot and NaOH solution was used in the 4th experimental lot. Samples collected before and after cleaning 6 hours were tested for E.coli, Salmonella, total aerobic microorganism, coliform.
Studied results showed that using NaOH solution to clean the pigsty was more effective than other cleaning solutions. NaOH solution reduced a number of bacteria; Eco//(44.3-64.3 times);
Salmonella; total aerobic microorganism (37.2-55.8 times); coliform (37.8-50.6 times) compared to water, soapy solution and lime solution (with concentration of 15 %).
Key words: Pigsty, Cleaning, Disinfection
' Vi^n Khoa hpc Ky thu$t Nong nghiep mien Nam
^ Trung tam nghiSn curu Ipn Thyy Phucmg - Vi^n Chin nuoi
KHOA HQC KY THUAT T H O Y TAP XX S 6 1 - 2013
LD^TVANDf:
Trong nhftng ndm gdn ddy, ngdnh chdn nudi nude ta tdng trudng binh quan d^t 7-8%/ndm.
Tinh rieng trong chdn nudi lgn, ty I? tdng hdng ndm giai do^n 2005 - 2010 tir 3,0 din 4,4%/ndm.
Ndm 2010, cd nude cd 27.373.200 con Ign, trong do phdn bd dan lgn d ddng bdng sdng Hdng nhilu nhdt (6.946.500 con). Vdi s l ddu con ngdy cdng Idn thi chdn nudi lgn theo qui md trang tr?i vd gia trai cung dang phdt triln nhanh vdi khodng 2500 trang trgi chdn nudi lgn (Cyc Chdn nudi, 2011). Nhu vdy sd ddu Ign ngdy m^t tdng vd di Cling vdi nd Id tinh hinh djch b?nh d mpt so dja phuang cung cd nhiing diln biln phiic t^p.
Dich b?nh xdy ra Id do 3 khau: Nguin b§nh, cdc nhan td trung gian truyin b§nh vd dpng vdt cdm thy. Thilu m^t trong 3 khdu hodc thilu sy lien h? gi&a 3 khdu dd thi djch khdng xdy ra dupe. Tren ca sd dd vi?c xod bd mOt hodc nhilu khdu hodc cdt diit lien h? gifta 2 khau trong qud trinh sinh djch chinh Id thyc hifin tot, c6 khoa hpc cdng tdc v? sinh ti6u dOc chudng nudi va mdi trudng xung quanh. Day Id khau rdt quan trpng trong cdng tdc phdng b?nh cho lgn (Linton vdcpngsu, 1987).
Thuc hien khii trimg chudng trai ma khdng ve sinh sach se chi lam lang phi tien ciia, trai lai, neu cdng tac v? sinh dugc th\rc hi?n tdt se nang cao khd ndng tdng trudng ciia Ign cung nhu dem lai nhieu Igi ich khdc.
De giiip cho ngdnh chdn nudi Ign phat triln bin v&ng ddng thdi ddm bdo ban chl thap nhdt kha ndng dich b?nh xdy ra, cdn phdi nghien ciiu cdc gidi phdp qudn ly v? sinh sdt triing chudng trai, khdng dl vi khudn tdn dpng tai chudng trai
gdy b^nh cho lgn. Trong dd qudn ly v§ sinh, sdt trimg chudng tr^i d khdu Idm sgch chdt hOii co trudc khi sdt trung Id budc ddu tien trong quy trjnh sdt tning chudng trgi. Chiing tdi tiln hdnh de tdi: "Nghidn cim dnh hudng ciia vi?c tdy nia trudc khi sdt triing chudng trai "
U. NOl DUNG, V^T Ll£U VA PHU'ONG PHAP NGHli:N ClTU 2.1. N$i dung
Ddnh gid hi^u qud cdc chat tdy nia (nude , xd phdng. nude vdi 10 - 20%, dung djch NaOH 2% trudc khi sdt tning nin chuong, vdch ngdn vd dyng cy.
2.2. Vfit lif u
- Chudng nudi Ign thit sau khi de trdng chudng gdm: San (nin), vdch ngdn, dung cy (iing).
- Chdt sat triing: Xd phdng, nude vdi nong dp 15%, dung dich NaOH 2%
- Cdc dyng cu ldm ve sinh chudng (n6n, vdch ngan, dung cy (ilng).
- Dyng cy ldy mdu vd bdo quan mau, hda chdt ki8m tra vi khuan.
+ Dia diem nghien ciiu:
- Tram nghien ciiu va phat triln gidng Ign hat nhdn Thyy Phuang - Yi&n chan nudi, Hd Ndi.
- Bp mon vi triing, Vien Thii y.
+ Thdi gian nghien ciiu: Tir thang 5/2011 din thang 11/2011.
2.3. Phmmg phdp nghiSn cihi Bdng 1. Thi^t ke thi nghi#m
Thdi gian^--...,,.^^^
Tri;dc khi riia
Sau khi rCra 6 gid
Ld 1 (RiJta bdng nudc S9ch; i p li/c ntidc ri!ra:8-10bar) - S i n (t\6n chudng);
- Vich ngan;
-Dgngcv (iing).
- Sin (nin chutfng);
- Vich ngdn;
- Dvng cu (dng).
Ld 2 (RCra bdng xk phdng; i p li/c nude nJa:8-10 bar)
• Sin (n^n chudng);
- Vich ngin;
- Dgng cy (Crng).
- Sin (ndn chudng);
• Vich ngin;
-Dyngeg {iing).
Ld 3 (RiTa bdng nude vdi 15%, i p li;c nUde rAa:8-10bar) - Sin (ndn ehudng);
- Vich ngin;
- Dgng eg (Ong).
- Sin (ndn chudng);
- Vich ngin;
-Dyngcy (ling).
Ld 4 (RCta bdng dung djch NaOH 2%; i p li/c nude rCra; 8 -10 bar) - San (ndn chudng);
- Vich ngin;
- Dgng eg (ung).
- Sin (ndn chudng);
- Vich ngin;
- Dgng eg (ung).
KHOA HQC K'? THUAT THO Y T^P XX S6 1 • 2013
- So lEin \ip \fi: 2
- Cdc chl lieu liy miu: U y mSu theo TCVN 8129:2009. M6i d6i tuqmg \ky 3 mSu truftc v4 sau khi \km v§ sinh 6 gi6 d6 kifim tra c6c vi khuSn tSn lai tr6n bk mjl sau khi ilia.
- Cdc chi tiiu xdc djnh vi khuin: E.coli, Salmonella, tong so VKHK, Coliform, theo c4c tieu chuSn Viet Nam (TCVN 4882:
2001; TCVN 4991:1989; TCVN 5153: 1990;
TCVN 5155:1990; TCVN 5156:1990; TCVN
5667:1992). j ; C4c s6 li^u du(rc xir ly theo phuang phip^
th6ng kd sinh h^c bang phiin mem MinitabH. .
III. KtT QUA v A T H A O LUJ^N 3.1. K^t qud x^t nghlfm mSu n^n. vich ngSn, dng, chudng nudi vdi chi tiSu vi ldiu4n E.coli
K^t qui dugc trinh bdy qua bdng 2.
Bdng 2. Ktft qud xdt nghidm mlu ndn, vdch ngdn, Ong chutfng nudi I0n vdi chl tiftu vl khujn E.coll
tu<?ng
N$n V i c h ngdn Dgng eg
VI khujn E.caH(VK/1cm') x 10' TrUtfc khi ria
L 6 1 J.n=3) X ± S D 15,4±1,12 12,9±0,98 6,4*0,61
L6 2 J.n=3) X ± S D 14,6±0,53 12,7±0,58 5,7±0,32
L6 3 J.n=3) X ± S D 15,3±0,55 12,4±0,59 6,1 ±0.54
L e 4 _ln=3)
X ± S D 14,8±0,71 12,810,92 6,2±0,22
Sau khi rijra L A I
_in=3) X ± S D 7,4±0.4e 6,3±0,56 3,4±0.13
L « 2 J.n=3) X ± S D 6,1±0.12 4,7±0.0e 2,4±0,04
L6 3 Jn=3) X ± S D 0,34±0,002 0,23±0,006 0,17±0,003
L6 4 _In=3) X ± S D 0,23±0.002 0.21±0,004 0,14±0,006
Ket qud bang 2 cho thay:
Trudc khi nia giiia cde Id thi nghi?m khdng cd sy chenh l?ch nhilu vl so lugng vi khudn E.coli tren cimg mOt vj tri lay mau, nhilu nhdt d Id 1 (nia bdng nudc thudng) tren nin chudng Id 15,4 X 10^ VK/Icm^ vd thdp nhdt d Id 2 (nia bdng xd phdng) tren dyng cy chdn nudi Id 5.7 x lO^VK/lcm^
Sau khi tiln hdnh nia chudng, ket qud cho thdy.
Tren nen chudng, so lugng vi khudn E.coli gidm it nhdt d Id 1 (riia bdng nudc thudng) Id 2,1 ldn ( tu 15,4 x 10' VK/lcm= xudng 7,4 x 10^ VK/lcm^), ty 1? gidm nhilu nhdt d Id 4 (nia bdng dung djch NaOH 2%) Id 64,3 ldn (tii 14,8 x lO' VK/lcm= xudng 0,23 x 10^ VK/lcm^), trong khi do ty le gidm ndy d Id 2 (rira bdng xd phdng) Id 2,4 lan vd Id 3 (nia bdng nudc vdi 15%) Id 45 Idn.
Tren vdch ngdn: ty I^ gidm E.coli nhieu nhat Id d Id thi nghidm 4 Id 61 Idn vd it nhdt d Id 1 Id 2 ldn, ty I? ndy d Id 2 Id 2.7 lan vd Id 3 Id 53,9 i k Tren dyng cy: ty I^ gidm E.coli nhilu nhdt la d Id 4 Id 44,3 ldn vd (t nhdt d Id I Id 1,9 ldn, ty 1^
ndy d Id TN2 Id 2,4 Idn vd Id 3 id 35,9 ldn.
Ket qud so sdnh trudc khi rua va sau khi r ^ ciing mpt Id d timg ddi tugng cho thdy cd sy sai khdcrdr^t(P<0,OOI).
Kit qud ciia nghidn ciiu ndy t h ^ hon so vdi ket qud nghien ciiu ciia Castiglia vd c$ng sy ndm 2006 tr€n moi giai d o ^ ciia qud trinh v | sinh thu y (sau khi rua thd sd lugng vi khuan E. coli Id 7x 10' vd sau khi nia bdng nudc ndng d giaido9D2 td3xlO^).
KHOA H O C K"? T H U A T T H C Y T A P XX S 6 1 - 2013
3.2. Kit qud x£t nghifm mSu nin, vdch ngSn, dng chuing nudi vdi chi ti@u Salmonella
Kit qua x6t nghi$m chi ti8u vi khudn Salmonella diu khdng tim thdy Salmonella trong edc mdu xet nghi?m. Nhu v | y vi khudn Salmonella cd thi rdt it tren be m$t chudng tr^i, cdn nghien ciiu tiep vd cdn x€i nghidm
nhieu mau hon.
3.3. Ket qud x^t nghifm mlu nin, vdch ngdn, dng chuing nudi vdi chi tieu ting s l vi khudn hiiu khi
Kit qud dugc trinh bdy qua bdng 3.
Bdng 3. K^t qud x6t nghi$m mlu nin, vdch ngdn, dng chudng nudi ign vdi chl tidu ta'ng sd vl khuin hidu khi
D A I tU^ng
N i n Vich ngdn Dgng eg
TJng sA vl kliujn hie'u ktii (VK/lcm') x 10>
Trudc khi ri:ra L61
Jn=3) X ± S D 32,3±14 28.4±1,53 15,3±1,12
LA 2 Jn=3) X s S D 32,4*0,51 27,1±1,02 13,3±1,31
LA 3 Jn=3) X ± S D 31,7*0,48 26,6*0,62 14,7*0,64
LA 4 Jn=3) X ± S D 31,8*2,22 28,2*1,78 13,4*0,66
Sau khi rijTa L A I
_In=3) X ± S D 19,4*2,31 15,2*1,12 9,7*0,32
L6 2 _in=3) X ± S D 14,8*1,25 11,4*1,06 6,3*0,24
LA 3 Jn=3) X * S D 0,94*0,07 0,77*0,06 0,51*0,08
LA 4 Jn=3) X * S D 0,57*0,008 0,61*0,008 0,36*0,006
Ket qud bdng 3 cho thay:
Trudc khi nia, giiia edc Id thi nghi?m khdng CO su chenh I8eh nhilu v l tdng sd VKHK tr8n ciing mdt vi tri lay mau, nhilu nhdt d 16 thi nghiem 2 (nia bang xa phdng) tren nin chudng la 32,4 X 10^ VK/lcm^ va thdp nhdt tren dyng cu chdn nudi Id 13,3 x 10^ VK/lcm^
Sau khi tiln hdnh nia chudng, ket qud eho thdy.Tren nin chudng tdng sd VKHK gidm it nhdt d Id thi nghiSm bdng nudc nia thudng Id 1,7 ldn (tu 32,3 x 10'VK/lcm^ xudng 19,4 x 10' VK/1 cm^), ty le giam nhilu nhdt d Id thi nghidm 4 (rira bdng dung dich NaOH 2%) la 55,8 ldn (tii 31,8x 10' VK/lcm^ xudng 0,57 x 10' VK/lcm^), trong khi do ty le giam nay d 16 TN2 la 2,2 ldn vd Id TN3 ( nia bdng nudc vdi 15%) la 33,7 ldn.
Tr8n vdch ngan: ty 18 gidm tdng so VKHK nhilu nhdt la d Id thi nghiSm 4 la 46,2 Idn vd it nhdt d Id thi nghiSm 1 la 1,9 Idn, ty 16 ndy d Id TN2 va TN3 Id 2,4 ldn va 34,5 Idn.
Tr6n dyng cy: ty le giam tdng sd VKHK nhieu nhdt la d Id thi nghiem 4 Id 37,2 ldn vd it nhat d Id thi nghiem 1 Id 1,6 lan, ty le nay d 16 TN2 vd TN3 la 2,1 ldn va 28,8 ldn.
Ket qua so sdnh trudc khi rua vd sau khi nia cimg mdt 16 d timg ddi tugng eho thdy cd su sai khac r 6 i e t ( P < 0,001).
Trong khi dd theo ket qua nghien ciiu ciia Castiglia vd cdng su nam 2006 cho ket qud cao hon: sau khi nia thd, tdng s6 VKHK Id 20x10'';
sau khi nia bang nudc ndng Id 10x10''. ket qua nghien ciiu nay hap hem cd the la do dp lyc vdi phun vd ket cau chuong trai khac nhau.
Ket qua nghien ciiu gan day cua Daniel Humik ndm 2008 sir dung chdt hiit dm DyStart''^"
kit hgp vdi sir dyng chdt tay rira thdng thudng cho kit qua vl giam thilu tdng sd vi khuan hiiu khi tii 3 din 6 Idn, kit qud nay thdp hem so vdi Id thi nghidm 3, 4 vd cao hon so vdi Id thi nghidm 1 va2.
KHOA HOC K? THUAT THtl Y TAP XX S6 1 - 2013
3.4. Kdt qud xit nghidm mdu ndn, vdch ngiin, dng chudng nu6i vdri chi tiSu coliform Ket qud xit nghidm dugrc trinh bdy qua bdng 4.
Bdng 4. Kdt qud xdt nghidm miu ndn, vdch ngdn, Cing chutfng nuAl l(^n vdi chl tidu conform
D<(l tutfng
Ndn Vdch ngdn Dgng eg
ColKorm (CFU/lcm') x 10"
Trudc khi rijra LAI
(n=3) X l S D 16,7*0,57 14,3*0,55 8,4*0,56
LA 2 J.n-3) T * S D 15,6*0,61 13,7*0,59 6,7*1,52
LA 3 (n=3) ' X ± S D 15,8*0,62 13,4*0,48 7,3±0,67
LA 4 (n=3) 7 * 8 0 16,2*1,14 14,1*1,24 6,8*0,44
Sau khi rCra L A I
(n=3) y * S D 10,1*0,18 7,8*0,22 5,2*0,16
LA2 X » S D 7,4*0.08 5,7±0,11 2,6*0,03
LA 3 Jn=3) X ± S D 0,46*0.003 0.41*0,006 0,24*0,002
LA4 (n=3) X * S O 0,32*0,002 0,31*0,004 0,18*0,003
Kit qud bdng 4 cho thdy:
Trudc khi nia, giiia cdc Id thi nghidm khdng cd sy chenh l^ch nhieu vl tdng sd coliform tren cimg mOt vj tri ldy mdu, nhieu nhat d Id thi nghi?m 1 (nia bdng nudc thudng) tren nin chudng Id 16,7 x 10' CFU/lcm^ vd thdp nhdt tren dyng cu chdn nudi Id 6,7 x 10' CFU/lcm^d Id thi nghidm 2 (nia bdng xd phdng).
Sau khi tien hdnh nia chudng, kit qua cho thay tren nen chudng tdng sd coliform gidm it nhdt d Id thi nghidm bdng nudc nia thudng Id 1.7 ldn ( tir 16,7 x 10' CFU/lcm- xuong 10,1 X 10' CFU/lcm^), gidm nhilu nhdt d Id 4 ( nia bdng dung djch NaOH 2%) Id 50,6 ldn (tir 16,2 X lO' CFU/lcm^ xuong 0,32 x IC CFU/lcm^), tnang khi dd ty I? ndy d Id 2 la 2,1 Idn vd Id 3 (nia bdng nudc vdi 15%) Id 34,3 ldn.
Tren vdch ngdn: ly I? gidm tdng sd colifonn nhilu nhdt Id d Id 4 Id 45,5 ldn vd it nhdt d Id 1 Id 1.8 ldn, ty 1? ndy d Id 2 vd 3 Id 2,4 Ian va 32,7 ldn.
Tren dyng cy: ty I§ gidm tdng sd coliform nhieu nhdt Id d Id 4 la 37,8 ldn vd it nhdt d Id 1 Id 1,6 idn, ty I? nay d Id 2 vd 3 Id 2.6 ldn va 30,4 ldn.
K6t qua so sdnh trudc khi nia vd sau khi nia cimg mpt Id d timg doi tugng cho thay cd sy sai khdc r6r§t(P< 0,001).
Kit qud ciia nghien ciiu ndy thap hon so vdi kit qud nghien ciiu cua Castiglia vd cpng sy ndm 2006 trdn m§i giai do^n ciia qud trinh v | sinh thu y (sau khi nia thd sd lugng vi khudn E.coli Id 13 x 10^ vasau khi nia bdng nudc d giai do^n 2 Id 7 X 10*). Kit qud nghien cihi ciia Cargill vd Banhazi ndm 1998 l^i cho kit qua ve ty I^ giim trdn chi tieu colifonn sau khi rOra chudng it hon (tir 3 - 4 ldn) so vdi kit qud nghien ciiu ndy.
IV. K ^ T L U A N V A D E N G H J - Phuong phdp nia chudng bdng dung djch NaOH Idm giam mgt sd vi khudn E.coli (44,3 - 64,3 ldn); Salmonella; tdng s6 VKHK (37,2 - 55,8 ldn); coliform (37,8 - 50,6 ldn) nhilu hon so vdi nia chu6ng bdng nudc s^ch, xd phdng vd nudc vdi 15%.
Tiip tyc nghien ciiu cdc bi^n phdp riia chudng bdng cdc chdt sdt trung vd cdc bi^n p h ^ phun sdt trimg khdc sau khi ldm s^ch chdt hihi co t^i chudng Ign.
KHOA H O C KY THUAT T H O Y T ^ P XX S 6 1 - 2013
TAI LIJU THAM KHAO 3. Castiglia, A et al. (2006) Proc.Am.Assoc. Swine Cue C h i n nuoi, 2011. Hien tr^ng chin nu6i t^i Vet. pUL
Vi^t N ^ vd cdc vdn bdn qudn ly N h i nudc v l 4. Humik, D., 2008. The value of a desiccant in the phat triSn chin nuoi lgn b i n vthig. Bdo cdo tham cleaning and disinfection of swine housing.
luj^t,i^HOi nghi IChuy^nneng. H i i Ph6ng thing 5. Li„,o„ AH, Hugo WB, Russell, AD 1987.
Disinfection in Veterinary and Farm Animal Cargill,C.; Banhazi, T., 1998. The importance of Practice, Blackwell Scientific Publications 1987 cleaning in all-in/all-out management systems. Nhan ngdy 25-10-2012
Proceedings IPVS Congress Birmingham, Vol 3,
P 1 5 . Phdn bien ngdy: 5-11-2012
H O I THAO KHOA HQC: "NGHlfiN C U t l , SAN XUAT VACXIN GIA SOC, G I A C A M VA THUY SAN T ^ I V I $ T N A M "
Trong 2 ng^y 3-4/11/2012 Hfii Thu y Vi^t Nam. vdi s\r \k\ in? cila C6ng ty HANVET da t6 chiic hpi thdo:
"Nghien cihi, san xuit vacxin gia siic, gia cam v^ thily sfin t^ii Vift Nam" if khdch s?n HANVET - Khu du Ijch Tam Dfio, VTnh Phiic
Tham dy h^i thio c6 d?i di§n cic co quan nhi nuiS-c' LiSn hi?p cic H$i KHKT Vi|t Nam, Cyc Thii y, Vien Thii y, Truong dfki hpc N6ng nghiep Hi N$i, Trung tim Chin doin TTiii y Trung ucmg, Trung tam Ki^m n ^ ^ m thu6c thii y Trung irong 1, Phan vi^n thii y miln Trung; d^i di^n mgt s6 Cdng ty san xuit, kinh doanh thu6c thii y (Hanvet, Navetco, Marphavet, RTD, Fivevet, Huphavet, Greenvet, Xi nghiep thuoc thii y trung uong), m$t so Chi cue thC y (Bic Giang, Hi Ngi, Phii Thg, Vinh Phiic) cung nhieu nhi khoa hpc vi cic co quan, don vj trong nginh.
Hoi thao d i nghe bio cio \k tinh hinh nh§p khiu, sin xuit, sit dyng vacxin trong mrdc thdri gian qua va djnh hirdng trong th£ri gian toi cua nhi nu6c ve sin xuit quin ly vi cung cap vacxin do Cyc Thii y trinh biy. Sau d6 l i cic bao cio khoa hpc nghi€n ciiu v€ biln ddi virut LMLM, ciim gia cim H5N1, tai xanh,... va v i ^ sin xuat vacxin o cac cong ty trong nudc trong nhdng nim qua.
Dinh gii chung cic bao cio cho thiy m^c du trong hoan cinh con kho khin nhung cac co quan nghien ciiu, cic nha khoa hpc v i cic cong ^ sin xuat dl co nhieu no I\TC trong khau nghi£n ciiu san xuat vacxin, d3 d^t dugc thanh qua nhit djnh, d$c biet trong thdi gian gin day. Tuy nhien, theo Cue Thii y thj phan sin xuit vi cimg iing vacxin trong nudc chi chi£m Idioing 5% trong tong so vacxin dang dupe phep luu hinh t^i Vi^t Nam. Trong so do nhimg vacxin phong b^nh chiln lupc, quan trpng nhu LMLM, tai xanh, ciim gia cam HSNl hoic con chua san xuat dupe h o ^ san xuat rat hfo che va bi dpng, cic vacxin da gii phdng bfnb cho gia cam co ban dang bj cac cong ty nudc ngoii thao bing.
Hpi thio ciang da nghe 3 ehuyen dl: Tinh hinh nghien ciiu va sin xuit vacxin phong chdng djch bfnh cho gia siic, gia cam t^i Viet Nam; NghiSn ciiu vi sin xuit mOt s6 vacxin (djch ti lpn, LMLM, tai xanh, ciim gia cim, d^ii), cic lo^i vacxin da gii phdng b§nh cho gia cim; Cdng nghp cao trong sin xuat vacxin ndi chung vi vacxin cho thii y ndi ri&ig. Cic d?i bilu d i thao l u ^ rit soi ndi, neu len thinh t\m da d^t dupe vi nhiing bit cip trong nghien ciiu vi cdng n ^ ? d nudc ta, ddng thdi dua ra dupe nhihig de xuat djnh hudng thiet thyc trong nghien cfru v i san xuit vacxin ndi chung v i nhiJng vacxin cy thi ndi rieng trong tuong lai cho cic nhi khoa hpc ciing nhu cac cdng ty mong mudn vio sin choi niy.
Ben c ^ dd cung cd nhieu y kiln de xuat vdi cic co quan quan ly nhi nudc cin c6 nhiing giii phip thio gd rio cin cho doanh nghi?p tu nhin dl binh ding nhu doanh nghi?p nhi nudc, vi|c kilm nghi|m, thii nghifm can cd sy dilu chfaih vin bin thi hi§n co quan quan 1^ nha nudc lim trpng tii, cic doanh nghipp chiu trich nhi§m vl sin phim de sin phim nhanh chdng dupe dua vio sin xuat...
Ben ll hdi thao d i cd nhilu cuOc tiip xiic hi^u qui giila cic doanh nghi?p vdi cic nhi khoa hpc, co quan nghien ciiu trong vi§c trao doi kinh nghidm, hpp tic, lien doanh lien kit sin xuit vacxin trong nudc trong thdi gian tdi, mpt sy hiia hfn tot d$p.
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