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<small>HA VltTCV0NG,vO TRI~U MAN.Ch&ndoanxcdinh benh virutkharn lun ngo</small>
<small>hau lay</small>hat <small>maitaiin</small> Tha <small>Thien- Hue</small>
<small>nuoi cay va taisinh tebao tran cua cac dong khoaitaY'nibiphuc</small>
<small>vtJtaogiongbangdunghqp te bao tran</small>
<small>ven bo taiQuang Ngaiva Binh Dinh</small>
<small>QUANG TRUNG.Anh huangca thircan denka nang sinh sacuatom chan trang bo me sach berth</small> <i><small>(Litopenaeusvannamei)</small></i>
<i><small>(Meretrix Iyrata)</small></i> <small>tCrgiaidean baitt.do(O -Veligrdengiaidean saubiethai (pst-metamorphosis).</small>
<small>NGUY~N THltN T·HU.Buoc dau danh giahiequasanph&m vacxintamgiaPISCIVACtrenca chern</small> <i><small>(Latescalcarifer)</small></i> <small>va camu</small>
<b>KHOA HQC CONGNGH_</b>
TOM TAT
<small>Thi nghiernO'Qlbotri duatren~Ilk(~thpgilla baloaitlurc antoistngkhacnhau (mire,hngtrung,hau) c1ang</small>
<small>OL!'Qdung phobin trongJ1l1!)</small>
<small>trong congtlurcket hobaloaithirc an trcncungcohndang</small>
<small>17.400Naul/omm\,/'1I1sovoi8..t00 va3.200 :\aupli/omm~/bll</small> d <small>(ycong thirc1&2.Cacmall</small>
<small>tom boI11~,au trungvath.rcan deuam tinh voi WSSV, )lV, TSV,MSV,IllH:-<V.</small>
VU Van In', Nguyen Htru Ninh', <i>U</i>Van Nhan', Trin Th~<small>MlIII</small>
<i>U</i>Xan', Nguyen Phtro g Toan', VuVan Sang', Ngu en Quang Trunr
Tuy tom chan tran ' 1;1cI<'iituo g co <small>giatri</small> kinh te cao nhung sau mot tho; gian phat trio , dich bcnh bat dau x at hicn Vel del g{IY thict hai kho g nho <i>vi:</i>
ve gia ban, Chinh nhirng 16 torn giong nay lit mot tro g nhirng n u en nhan dan den <small>SI!</small>bung phaf dich
b nh
c11co lich SLr nuoi torn chan trin lau doi cho thay SLr
clung con gio g' sach bcnh la giai phap tot nhat
x at con gio g' sach benh tro g mroc litviec lam can thiet giup on dinh ng o cung va gia; quyet van de ve chat hrong torn giong.
Thirc an cho torn b me trong qua trinh nuoi vo
c1uQ'C ch lityeu to then chat quyet din thanh cong
tnrng <small>ma</small> con <small>giup nag</small> cao chat hro g tnrn <small>Vit3L</small> trung. Trong qua trinh phat trien sinh due, tuyengan
tuy huy <small>dng'</small> rat <small>nhie</small> chat dinh diro g dac biet <small>Ia</small> torn <small>cai.</small>Torn <small>caisau</small> khi <small>cat mat,</small> qua trinh sin <small>[{ing</small> h "P protein duoc tang cu ng rat manh tro g d <small>khilJ</small>
gan tuy va buo g tnrn (Quackenbush, 1989).01
phai huy d ng mot hro g IOn cac chat dinh du{mg ch <small>51!</small> phat tricn buong tnrng ncn giai <small>dO~U1</small>nay rat
de xay ra tnh trang can kiet chat clin duo g nell
kho g c6 che <small>de)</small> dinh diron h p ly. Chinh vi<small>v~y,</small> thirc an la yeu
bo su g thirc <small>a</small> cong <small>nhie.</small> Tuy thanh phan thirc
<small>an co</small> k ac nhau nh n giun nhieu <i>ta</i>la thanh p an
chat<small>dinh</small> duong ch tom b <small>me</small> voi ham IUQ11gchat
dinh dirong pho g phu: 60% protein, 1 % chat beo,
15%khoan (Artemia Inter., 2011). Tro g nhorn thirc
an la giap xac thi tom cua la di tiro g co the lay
uuycn bcnh ch tom nen kho g diroc dung tro g
cac trai gio g co <small>ycu</small> cau sach benh (SPF: specific
h n trung va hau. Tom be me c1uQ'Cnuoi trong cac binh dat 45-50 g/con. u i voi matc1(l10 con/nr' (180 co /be),
dieu nhiet. Dinh k han ngay thay nuoc 100%,cho
tnh va ty I~ n& cua trung & tUng<i>cang</i> thuc thi
<b>KHOA HQC CONG NGH.</b>
4. Theo doi cac y~u t6 moi tr ong va liy mau phan tich
Dinh ky 1 ngay /lan l<iy mau ngau nhien 2 -30
con tom
Bang 1.Bien dQng cua cac y~
z-Velazque <i>et<small>s,</small></i> 2001). DQ man thap nhat d~ tom
nhien dQ man phu hQ'Pch su thu tinh va no cua
tnrn phai thap nhat la 28%0(Parnes <i>et sl.2004),</i>
(12-14h/rigay). o y hoa tan (DO> 4 mg/l) Mu<small>du(X</small> kiern soat d~ dam bao cac yeu to moi tnro g tln
n hiern. Tu nhien, tr ngay thi nghiem thtr30
n hiern, trong khi d6 tom cai van tiep tuc tang m?c
Tom c i gia tang khoi hro g nhanh hon torn<small>d\fC</small>
trong qua trinh nuoi vo. Tee dQ tang tnrong <small>trung</small>
binh cua torn dire la0,41- 0,48 g/tuan trong khi
cai la0,97-1,1 g/tuan. Toe dQ tang tnrong cua tom<i><small>i1</small></i>
cac cong thirc thi nghiern Cling khac nhau, thapnhat
thanh phan thirc an c6 anh huang den gia tangkhOi
hrong cua torn b6 me trong qua trinh nuoi
<b>KHOA HQC CONG</b> NGH~
4. Ket qua sinh san cua dan tom bo me
Bang 2. Ket qua sinh san cua torn bo me nuoi trong 3 cong thirc thirc an khac nhau
<small>CogthircCongthircCogthirc 2</small>
<i>Iechchudn. Chtrcsikluicnhau cung mot king<small>J;j</small>ssi</i>
<i>kiuic co</i>
Ket qua &bang 2 ch thay, trong cung dieu kien
v nhiet dQ, dQm<P1va che dQcham s6c thi vie Slr
thuc &cac cong thirc <small>1,</small>2, 3 co su khac nhau dang ke <small>72,1±8,280,S±10,683,8±9,6</small>
5. Ket qua phan tich mau benh torn
<b>IV. Kfi LU~N</b>
con lai.
<b>TAl UW THAM KMO</b>
</div><span class="text_page_counter">Trang 7</span><div class="page_container" data-page="7"><small>Thedietarystudyfor brodstockof whiteleg shrimp</small> <i><small>iLiptocnscusvennsmeii w</small></i><small>ascniedout basedo</small>
<small>the compositioof threedifferentkindsof freshfood: Squid, blod worn andoster.Broodstockswere</small>
<small>rearedin series ofindoorcompositetanksof1m2at stockingdensiyof 10pieces/rn".at28-29"C andsalinityof 28-3%0 under bio-security,feedingregimeof 4 timeper day,waterexchaneoflOO%/day. For</small>
<small>inducedbreeding,eyeablatowasapplied tofemaleshrimpafter30 daysintensiverearing.Thebdy</small>
<small>weightofshrimpcontinuedto riseduring the experiment,from0.41-0.4g/weekfor maleand0.9-1.1</small>
<small>g/week/emale,survival rateafter 60 daysreachedoer 90%in which maleappearedwith highersurvivalratein the samedietaryexperiment.Breedingperformancwas significntbeterin theformulaof three</small>
<small>diferent fresh food than that inother twoexperiment(P<0.05),reachingmaturerate: 86.2%; matingrate:8.8%;spawning fecundity:10.000eggs/spawn;fertilizatiorate:78.5%; hatchingrate:85.5%. Similary,the</small>
<small>quantity ofNapli producdper spawnwasalso considerablehigerthan that inotherexpermentswih107,400 Nauplii,comparinwith8,400 and 38,200Naupl/spawngained fromotherdietary formulas,</small>
<small>Key words:</small> <i><small>Vanname) broodstock,LiptoeneusVanllc17JC1;blood worm,Nauplii</small></i>
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