KHOA HOC CbNG NGHfi<br />
<br />
<br />
aVUC OAU DAIMH GIA IVlUC DD AIM TDAIM VE 5IIMH<br />
THUC PHAIVI TREIM TDIVI S U [Penaeus manadati^<br />
iMUDI T H A I V I C A I M H THED HE THDIMG D A CHU KY-<br />
DA AD TAI HAI PHOIMG<br />
Le Ngpc QudnS Bin Quang Tl^, Nguyin Thj Bien Thiiy^,<br />
Hodng Thj Yln^ Truong Thi Thdnh Vinh^<br />
<br />
<br />
T6MTAT<br />
Nuoi tom su dam bao an toan ve sinh thuc pham hien nay rat can thiet, trong do cac giai phap ngay tir khau<br />
nuoi trong la rat quan trong. Nghien ciiu mot sd chi tieu vi sinh vat tren tdm su {Penaeus monodon) nuoi<br />
thdm canh theo hd thdng da chu ky - da ao (nuoi tom theo cac giai doan khac nhau. mdi cdp ao tuong img<br />
vdi mot giai doan smh trucmg cua torn va mdi cap ao dupc nuoi lap lai nhieu lan trong mpt nam) da dupc<br />
tien hanh. Bdng phuang phap dinh lupng (theo phuong phap MNP, S. D. Millar va G. N. Frerchs ), nhan<br />
dang trdn mdi trudng nudi cay dac trung, thir mpt so phan iing sinh hoa cho thay: Vi khuan hiiu khi tdng<br />
sd. Fecal coliform, E .coli, Vibrio spp: Staphylococcus spp. Salmonella diu nim trong gidi ban cho phep ciia<br />
tieu chuan Viet Nam va the gidi hoac neu co thi anh huong khdng dang ke de'n ngudi tidu dimg sir dung san<br />
pham cd loai vi khuan tren. Tuy nhien, su cd mat cua chirng trdn ddi tupng nudi cd thi la nguyen nhdn gdy<br />
benh cho tdm neu nhu cac yeu td mdi trudng ao nuoi khdng thuan lpi. Mat dp te bao cua vi khuan hie'u khi<br />
tong sd. Fecal coliform, Vibrio spp b cip 1 Idn nhdt va co su sai khac c6 y nghia thdng kd voi mo hinh 2 cdp<br />
va 3 cap, con giCra md hinh 2 cap va 3 cap khdng cd su sai khac co y nghia thdng kd vdi a = 0,05. Mat dp ii<br />
bao E. coli, Staphylococcus spp d md hinh 1 cap Idn nhat, tuy nhien ph&n tich thdng kd cho thay khdng c6<br />
su sai khac gitra 3 md hinh. Phan tich du lupng thuoc, khang sinh sau khi tdm sii dat kich ca thuong pham<br />
cho thay khdng phat hien dupc cac mau nhidm cloramphenicol, nitrofuran, tetracyclin, sulphonamid,<br />
flofenicol, fluoroquinolon, malachite green, dipterex, aflatoxin.<br />
Tirkhda.-^ toan v$sinh thucpham, cho phep, gidi h^, tiduchuan, saikhac.<br />
<br />
<br />
L OAT VAN D£ *" (Penaeus monodori) nudi thdm canh theo h | thdng<br />
, , . da chu ky- da ao (thude dl tdi cap Nhd nudc, md sd<br />
Tdm su Id mdt ,' trong<br />
. nhung thue<br />
, phdm , dupe<br />