Bai 4 Thuc An Tom Chan Trang Bo Me 2012.Pdf

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ISSN 0866-7020

2012

o LI: HW cAN.Nghie cuu xacdinhlieu luqng phanbon thich hop chomotso gionglua thuanTrungOuccmoinhap n(lt<;ThanhHoa o TRAN TH!THANH BiNH,TRATH!NV HOA,NGUY~NTHU THOy,

HA VltTCV0NG,vO TRI~U MAN.Ch&ndoanxcdinh benh virutkharn lun ngo

o HOANG TH! NGA,NGUY~NQUANG THACH,TRAKAc THINghien ctru trong cay cachua F1bng kylhuatkicnh

o 8Ao TH! H6NG VAN,NGUY~NVAN CACH,8ANG TH!THU.Nghie 33-39 cUutaoche ph&m sinhhoc XlIIynuoc thaisinhhoat dothiHa N(l

o HOANG TH! THAI HOA,80 8iNH THl,JC,80 CAOANH.Nghie cuu 40 - 45dacdiem sinh truang, phattrienva nang suatcua mot sogiong dira

hau layhat maitaiin Tha Thien- Hue

o NGUY~NTHI PHVONGTHAo,80THITHU HA, v THI HANG,46-54HoANGTH!GIANG,NGUY~NQUANG'THAC.Nghien ~vutac,

nuoi cay va taisinh tebao tran cua cac dong khoaitaY'nibiphuc

vtJtaogiongbangdunghqp te bao tran

o HOANG QU6CHrNH,PHAMVN80AN.Hieutuccua phn kali55 -5doivoitualaitren datphen ven bien tinh ThaiBinh

o PHAM H6NG MANH,BUIQUANGTHIN.Moi quanh$ giCrathu nhap6-6vacatuqng rnoi truOng:TruOng hop cac h(l ngcan khaimac hisan

ven bo taiQuang Ngaiva Binh Dinh

ov VAN IN,NGUY~N HWNINH, U:VANNA,TRANTHt MVU,66-70LI:xAN,NGUY~NPHVONGToAN, v vANSANG,NGUY~N

QUANG TRUNG.Anh huangca thircan denka nang sinh sacuatom chan trang bo me sach berth (Litopenaeusvannamei)

o CHU CHrTHltT,TRAN TH! KIM AN.Anhhuang cuamat d(l uang va 71 - 74 cau fruc nen day den sinh truang va ty1$ songcaau trung nqheu

(Meretrix Iyrata) tCrgiaidean baitt.do(O -Veligrdengiaidean saubiethai (pst-metamorphosis).

o NGUY~NTHI THANH THUY,NGUY~NTHITHOA,NGUY~NTHI75 - 78QUt CHI TRAN XUAN HANH,TO TH!PHAN,PHAMHo QUANG:

NGUY~N THltN T·HU.Buoc dau danh giahiequasanph&m vacxintamgiaPISCIVACtrenca chern (Latescalcarifer) va camu

o 80 VANKlN,PHAM HUNG,NGUY~NHWNM.Danhqia kha79 -83 nang gay benh tht.cnqhiem cuamot so chungvi rutd~u de tren ban

o PHAM VANCVONG.Nangcodcng bematcua van san go 84 -90cong nghi$pbangdimetiladihydroxyl etyn ure(OMOHEU)

o HoANGVAN SAM,NGUY~NTH! KIM PHVQNG.Ngiecuu tin91 - 95da d<;lngtht.!c v~t tai Khu Bao ton Thien nhien Na H&u,inh Yen Bai

o NGUY~N H6NG QUAN,VO 8iNH TUytN.Giao rung tt! nhieco96-10c(lng dong,h(l gia dinh va van de khaithac

KHOA HQC CONGNGH_

TOM TAT

Thi nghiernO'Qlbotri duatren~Ilk(~thpgilla baloaitlurc antoistngkhacnhau (mire,hngtrung,hau) c1ang

OL!'Qdung phobin trongJ1l1!)v tomchan trting bome (Liopeneusvnnruunei. Caccong tlnrc thicanc1Q'Cbtritong becornpozit 18m2tognha(ymat dO10 con/1112,nhict c1e)ogkhoang 28-29"C, nog <1man2-30%0trongdieu kien darn baoan toan sinh hoc.Tom duoc cho ;in 4lari/ngay,thayniroc lOO%/lIg;Y,sau30ngaynuoi vo tien hanhcat matcho rk Toe c1(tantnrongvckoi lirong trongthigian nuoiVI)dati0,4,0,48 g/tuari/orndill'va 0,97'1,1g/tuan,'tomcai.TyI~s{lngsauGOngaynoi v ehodedeu dat tren90%&cc1thi nghicrn,trog c1tomdue co ty 1(>~ng caohn tom cai&cung congthicthinghiern.1\(;1quasinhsancua tomnuoitog conthirckethpca baloai thirc antrencaohndang k so voihairangthirc coI~ (P<,05),datcac tY I~thanh thuc:86,2%,tyI¢giaovi:3,8%; sire sin~;1.11:160.000tnmg/omme/an (1&;tY I~thutinh: 78,5%:tYI1(Y:5,5.Sohrong :\auplii s.mxat c1uQ'C tutom metong mot Iand

trong congtlurcket hobaloaithirc an trcncungcohndang k so VO;haicong thirc con lrnvadat

17.400Naul/omm\,/'1I1sovoi8 t00 va3.200 :\aupli/omm~/bll d (ycong thirc1&2.Cacmall

tom boI11~,au trungvath.rcan deuam tinh voi WSSV, )lV, TSV,MSV,IllH:-<V.

VU Van In', Nguyen Htru Ninh', UVan Nhan', Trin Th~MlIII

UXan', Nguyen Phtro g Toan', VuVan Sang', Ngu en Quang Trunr

Tuy tom chan tran ' 1;1cI<'iituo g co giatri 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 vi:

ve gia ban, Chinh nhirng 16 torn giong nay lit mot tro g nhirng n u en nhan dan den SI!bung phaf dich

b nh a nhieu noi tro g nhimg narn gan day Ri{lh n hiern phat trien nuoi tom ben virng cua cac ruroc

c11co lich SLr nuoi torn chan trin lau doi cho thay SLr

clung con gio g' sach bcnh la giai phap tot nhat d han che rui ro ve benh dich Do vay, phat trien san

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 ma con giup nag cao chat hro g tnrn Vit3L trung Trong qua trinh phat trien sinh due, tuyengan

tuy huy dng' rat nhie chat dinh diro g dac biet Ia torn cai.Torn caisau khi cat mat, qua trinh sin [{ing h "P protein duoc tang cu ng rat manh tro g d khilJ

gan tuy va buo g tnrn (Quackenbush, 1989).01

phai huy d ng mot hro g IOn cac chat dinh du{mg ch 51! phat tricn buong tnrng ncn giai dO~U1nay rat

de xay ra tnh trang can kiet chat clin duo g nell

kho g c6 che de) dinh diron h p ly Chinh viv~y, thirc an la yeu to quan tro g nhat anh huang densu phat trien cua tnrng (Dan, 2006) Tro g thanh pMn cac chat dinh duong can thiet ch torn bomethiJipil

bo su g thirc a cong nhie. Tuy thanh phan thirc

an co k ac nhau nh n giun nhieu tala thanh p an

chatdinh duong ch tom b me 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 ycu cau sach benh (SPF: specific d thay the thirc an tuoi so g chira c1cm lai hieu qua Do v~y, thuc an troi song van oUQ'C sir dung tron v~y, viec thir n hiern va tirn ra con thirc thirc an

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), tY I~ gioi tinh OIlC:caila1:1.

dieu nhiet Dinh k han ngay thay nuoc 100%,cho

tnh va ty I~ n& cua trung & tUngcang thuc thi

NONG NGHI~PvAPHAT TRIEN NONG THON - KY 2 - THANG 1/20126

KHOA HQC CONG NGH.

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 amoi b~thi nghiern d xac dinh cac chi tieu

Bang 1.Bien dQng cua cac y~ 16 moi tnrong trong cac Mthi nghiem (56 lieu trinh bay lagia tri trung

z-Velazque ets, 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 et sl.2004),

(12-14h/rigay) o y hoa tan (DO> 4 mg/l) Mudu(X kiern soat d~ dam bao cac yeu to moi tnro g tln

n hiern Tu nhien, tr ngay thi nghiem thtr30tradi, su gia tan v khoi hrong cua tom due bM dflu chan lai va gan nhir kho g tan a cuoi tho; giantlll

n hiern, trong khi d6 tom cai van tiep tuc tang m?c

Tom c i gia tang khoi hro g nhanh hon tornd\fC

trong qua trinh nuoi vo Tee dQ tang tnrong trung

binh cua torn dire la0,41- 0,48 g/tuan trong khiatom

cai la0,97-1,1 g/tuan Toe dQ tang tnrong cua tomi1

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 v va cho

KHOA HQC CONG NGH~

TYl~ song & cong thirc 1, 2, 3 Um hrot la: 95,02%,

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

CogthircCongthircCogthirc 2

Iechchudn Chtrcsikluicnhau cung mot kingJ;jssi

kiuic coynhla(p<0,05).

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 1,2, 3 co su khac nhau dang ke 72,1±8,280,S±10,683,8±9,6

5 Ket qua phan tich mau benh torn

IV Kfi LU~N

con lai.

TAl UW THAM KMO

Thedietarystudyfor brodstockof whiteleg shrimp iLiptocnscusvennsmeii wascniedout basedo

the compositioof threedifferentkindsof freshfood: Squid, blod worn andoster.Broodstockswere

rearedin series ofindoorcompositetanksof1m2at stockingdensiyof 10pieces/rn".at28-29"C andsalinityof 28-3%0 under bio-security,feedingregimeof 4 timeper day,waterexchaneoflOO%/day For

inducedbreeding,eyeablatowasapplied tofemaleshrimpafter30 daysintensiverearing.Thebdy

weightofshrimpcontinuedto riseduring the experiment,from0.41-0.4g/weekfor maleand0.9-1.1

g/week/emale,survival rateafter 60 daysreachedoer 90%in which maleappearedwith highersurvivalratein the samedietaryexperiment.Breedingperformancwas significntbeterin theformulaof three

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

quantity ofNapli producdper spawnwasalso considerablehigerthan that inotherexpermentswih107,400 Nauplii,comparinwith8,400 and 38,200Naupl/spawngained fromotherdietary formulas,

Key words: Vanname) broodstock,LiptoeneusVanllc17JC1;blood worm,Nauplii