{"id":6395,"date":"2023-05-14T02:18:17","date_gmt":"2023-05-14T02:18:17","guid":{"rendered":"http:\/\/sunjin.vn\/ban-tin-thuy-san-so-e03-032023\/"},"modified":"2023-05-14T02:18:17","modified_gmt":"2023-05-14T02:18:17","slug":"ban-tin-thuy-san-so-e03-032023","status":"publish","type":"post","link":"http:\/\/sunjin.vn\/en\/ban-tin-thuy-san-so-e03-032023\/","title":{"rendered":"B\u1ea3n tin th\u1ee7y s\u1ea3n s\u1ed1 E03 – 03\/2023"},"content":{"rendered":"
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T\u1ed5ng quan t\u00ecnh h\u00ecnh nu\u00f4i nu\u00f4i t\u00f4m n\u0103m 2022 v\u00e0 2 th\u00e1ng \u0111\u1ea7u n\u0103m 2023 & chuy\u00ean m\u1ee5c k\u0129 thu\u1eadt \u2013 B\u1ec7nh DECAPOD INFIDESCENT VIRUS 1 (DIV1: b\u1ec7nh \u201c\u0110\u1ea7u tr\u1eafng\u201d) tr\u00ean t\u00f4m nu\u00f4i.<\/p>\n

TIN T\u1ee8C SUNJIN<\/span><\/span><\/strong><\/span><\/p>\n

S\u1ed1 E03 \u2013 03\/2023<\/span><\/strong><\/span><\/p>\n

T\u1ed5ng quan t\u00ecnh h\u00ecnh nu\u00f4i t\u00f4m n\u0103m 2022 v\u00e0 2 th\u00e1ng \u0111\u1ea7u n\u0103m 2023<\/span><\/strong><\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 N\u0103m 2022, s\u1ea3n l\u01b0\u1ee3ng th\u1ee7y s\u1ea3n \u01b0\u1edbc \u0111\u1ea1t 9.026,3 ngh\u00ecn t\u1ea5n, t\u0103ng 2,7% so v\u1edbi n\u0103m tr\u01b0\u1edbc; bao g\u1ed3m: C\u00e1 \u0111\u1ea1t 6.483,9 ngh\u00ecn t\u1ea5n, t\u0103ng 2,1%; t\u00f4m \u0111\u1ea1t 1.233,5 ngh\u00ecn t\u1ea5n, t\u0103ng 7,2%; th\u1ee7y s\u1ea3n kh\u00e1c \u0111\u1ea1t 1.308,9 ngh\u00ecn t\u1ea5n, t\u0103ng 1,3%. Trong \u0111\u00f3, s\u1ea3n l\u01b0\u1ee3ng th\u1ee7y s\u1ea3n nu\u00f4i tr\u1ed3ng \u01b0\u1edbc \u0111\u1ea1t 5.163,7 ngh\u00ecn t\u1ea5n, t\u0103ng 6,3% so v\u1edbi n\u0103m tr\u01b0\u1edbc, bao g\u1ed3m: C\u00e1 \u0111\u1ea1t 3.494,3 ngh\u00ecn t\u1ea5n, t\u0103ng 5,8%; t\u00f4m \u0111\u1ea1t 1.080,6 ngh\u00ecn t\u1ea5n, t\u0103ng 8,5%; th\u1ee7y s\u1ea3n kh\u00e1c \u0111\u1ea1t 588,8 ngh\u00ecn t\u1ea5n, t\u0103ng 5,3%.<\/span><\/span><\/p>\n

\"\"<\/p>\n

Ngu\u1ed3n: b\u00e1o c\u00e1o kinh t\u1ebf – x\u00e3 h\u1ed9i qu\u00fd IV\/2022<\/span><\/span><\/em><\/strong><\/span><\/p>\n

S\u1ea3n l\u01b0\u1ee3ng th\u1ee7y s\u1ea3n n\u0103m 2022 (So v\u1edbi n\u0103m 2021)<\/span><\/em><\/strong><\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 N\u00f3i ri\u00eang v\u1ec1 t\u00f4m, n\u0103m 2022, s\u1ea3n l\u01b0\u1ee3ng t\u00f4m th\u1ebb ch\u00e2n \u01b0\u1edbc \u0111\u1ea1t 743,5 ngh\u00ecn t\u1ea5n, t\u0103ng 11,6% so v\u01a1\u0301i n\u0103m 2021. S\u1ea3n l\u01b0\u1ee3ng t\u00f4m s\u00fa \u01b0\u1edbc \u0111\u1ea1t 271,4 ngh\u00ecn t\u1ea5n, t\u0103ng 1,9% so v\u01a1\u0301i n\u0103m tr\u01b0\u01a1\u0301c. S\u1ea3n l\u01b0\u1ee3ng t\u00f4m n\u01b0\u1edbc l\u1ee3 t\u0103ng tr\u01b0\u1edfng m\u1ea1nh trong 6 th\u00e1ng \u0111\u1ea7u n\u0103m do m\u00f4 h\u00ecnh nu\u00f4i t\u00f4m th\u1ebb ch\u00e2n tr\u1eafng \u1ee9ng d\u1ee5ng c\u00f4ng ngh\u1ec7 cao mang l\u1ea1i hi\u1ec7u qu\u1ea3 kinh t\u1ebf cao, ch\u1ebf bi\u1ebfn va\u0300 xu\u00e2\u0301t kh\u00e2\u0309u t\u00f4m t\u0103ng tr\u01b0\u1edfng m\u1ea1nh. Tuy nhi\u00ean, trong nh\u01b0\u0303ng tha\u0301ng cu\u00f4\u0301i n\u0103m do v\u00f9ng n\u01b0\u1edbc l\u1ee3 ven bi\u1ec3n \u0110\u1ed3ng b\u1eb1ng s\u00f4ng C\u1eedu Long ng\u1ecdt s\u1edbm h\u01a1n \u0111\u00e3\u00a0 g\u00e2y kh\u00f3 kh\u0103n cho vi\u1ec7c nu\u00f4i t\u00f4m. B\u00ean c\u1ea1nh \u0111\u00f3, r\u1ee7i ro do d\u1ecbch b\u1ec7nh n\u00ean ng\u01b0\u1eddi nu\u00f4i v\u1eabn \u0111ang th\u1ea3 nu\u00f4i c\u1ea7m ch\u1eebng. Ho\u1ea1t \u0111\u1ed9ng ch\u1ebf bi\u1ebfn v\u00e0 thu mua t\u00f4m ch\u1eefng l\u1ea1i do t\u00ecnh h\u00ecnh l\u1ea1m ph\u00e1t to\u00e0n c\u1ea7u l\u00e0m cho s\u1ee9c ti\u00eau th\u1ee5 gi\u1ea3m, t\u00f4m Vi\u1ec7t Nam c\u1ea1nh tranh gay g\u1eaft v\u1edbi t\u00f4m gi\u00e1 r\u1ebb c\u1ee7a Ecuador, \u1ea4n \u00d0\u1ed9.<\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Ngu\u1ed3n: Sunjin Aqua – MKT<\/span><\/span><\/em><\/strong><\/span><\/p>\n

S\u1ea3n l\u01b0\u1ee3ng t\u00f4m nu\u00f4i n\u0103m 2021 \u2013 2022 & c\u01a1 c\u1ea5u t\u00f4m nu\u00f4i n\u0103m 2022<\/span><\/em><\/strong><\/span><\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u0110\u1ea7u n\u0103m 2023, S\u1ea3n l\u01b0\u1ee3ng th\u1ee7y s\u1ea3n nu\u00f4i tr\u1ed3ng trong th\u00e1ng 2 \u01b0\u1edbc \u0111\u1ea1t 332,2 ngh\u00ecn t\u1ea5n, t\u0103ng 2,1% so v\u1edbi c\u00f9ng k\u1ef3 n\u0103m tr\u01b0\u1edbc, trong \u0111\u00f3: C\u00e1 \u0111\u1ea1t 237,2 ngh\u00ecn t\u1ea5n, t\u0103ng 2,5%; t\u00f4m \u0111\u1ea1t 51,6 ngh\u00ecn t\u1ea5n, t\u0103ng 0,4%. T\u00ednh chung 2 th\u00e1ng \u0111\u1ea7u n\u0103m 2023, s\u1ea3n l\u01b0\u1ee3ng th\u1ee7y s\u1ea3n nu\u00f4i tr\u1ed3ng \u01b0\u1edbc \u0111\u1ea1t 665,9 ngh\u00ecn t\u1ea5n, t\u0103ng 2,8% so v\u1edbi c\u00f9ng k\u1ef3 n\u0103m tr\u01b0\u1edbc, trong \u0111\u00f3: C\u00e1 \u0111\u1ea1t 479,6 ngh\u00ecn t\u1ea5n, t\u0103ng 3,3%; t\u00f4m \u0111\u1ea1t 100,4 ngh\u00ecn t\u1ea5n, t\u0103ng 0,7%; th\u1ee7y s\u1ea3n kh\u00e1c \u0111\u1ea1t 85,9 ngh\u00ecn t\u1ea5n, t\u0103ng 2,9%. Trong \u0111\u00f3, s\u1ea3n l\u01b0\u1ee3ng t\u00f4m th\u1ebb ch\u00e2n tr\u1eafng trong th\u00e1ng 2 \u01b0\u1edbc \u0111\u1ea1t 31,4 ngh\u00ecn t\u1ea5n, gi\u1ea3m 0,3% so v\u1edbi c\u00f9ng k\u1ef3 n\u0103m tr\u01b0\u1edbc; s\u1ea3n l\u01b0\u1ee3ng t\u00f4m s\u00fa \u0111\u1ea1t 15,7 ngh\u00ecn t\u1ea5n, t\u0103ng 1,3%. T\u00ednh chung hai th\u00e1ng \u0111\u1ea7u n\u0103m 2023, s\u1ea3n l\u01b0\u1ee3ng t\u00f4m th\u1ebb ch\u00e2n tr\u1eafng \u0111\u1ea1t 60,2 ngh\u00ecn t\u1ea5n, t\u0103ng 0,5% so v\u1edbi c\u00f9ng k\u1ef3 n\u0103m tr\u01b0\u1edbc; s\u1ea3n l\u01b0\u1ee3ng t\u00f4m s\u00fa \u0111\u1ea1t 31,3 ngh\u00ecn t\u1ea5n, t\u0103ng 0,3% (c\u00f2n l\u1ea1i l\u00e0 c\u00e1c lo\u00e0i t\u00f4m kh\u00e1c).<\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Ngu\u1ed3n: Sunjin Aqua – MKT<\/span><\/span><\/em><\/strong><\/span><\/p>\n

S\u1ea3n l\u01b0\u1ee3ng t\u00f4m nu\u00f4i Vi\u1ec7t Nam n\u0103m 2022 \u2013 2023 & c\u01a1 c\u1ea5u t\u00f4m nu\u00f4i n\u0103m 2023<\/span><\/em><\/strong><\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Nu\u00f4i t\u00f4m \u0111ang trong giai \u0111o\u1ea1n chuy\u1ec3n \u0111\u1ed5i theo h\u01b0\u1edbng n\u00e2ng cao ch\u1ea5t l\u01b0\u1ee3ng, nhi\u1ec1u n\u01a1i ng\u01b0\u1eddi nu\u00f4i t\u00f4m t\u1eadp trung c\u1ea3i t\u1ea1o, tu s\u1eeda ao h\u1ed3 v\u00e0 ch\u00fa tr\u1ecdng \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng con gi\u1ed1ng n\u00ean h\u1ea1n ch\u1ebf d\u1ecbch b\u1ec7nh.<\/span><\/span><\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 V\u1ec1 t\u00ecnh h\u00ecnh xu\u1ea5t kh\u1ea9u t\u00f4m, th\u00e1ng 1 xu\u1ea5t kh\u1ea9u t\u00f4m gi\u1ea3m m\u1ea1nh so v\u1edbi th\u00e1ng 12\/2022, c\u1ee5 th\u1ec3 \u0111\u1ea1t 141 tri\u1ec7u USD gi\u1ea3m h\u01a1n 50% so v\u1edbi c\u00f9ng k\u00ec n\u0103m tr\u01b0\u1edbc. Xu\u1ea5t kh\u1ea9u gi\u1ea3m do th\u00e1ng 1 tr\u00f9ng v\u00e0o th\u1eddi gian T\u1ebft Nguy\u00ean \u0111\u00e1n, nhu c\u1ea7u th\u1ecb tr\u01b0\u1eddng nh\u1eadp kh\u1ea9u s\u1ee5t gi\u1ea3m do l\u1ea1m ph\u00e1t. Tuy nhi\u00ean gi\u00e1 t\u00f4m th\u1ebb v\u00e0 t\u00f4m s\u00fa th\u1eddi \u0111i\u1ec3m hi\u1ec7n t\u1ea1i \u0111ang t\u0103ng v\u00ec khan hi\u1ebfm ngu\u1ed3n t\u00f4m nguy\u00ean li\u1ec7u t\u1eeb cu\u1ed1i n\u0103m tr\u01b0\u1edbc do t\u00e1c \u0111\u1ed9ng b\u1ea5t l\u1ee3i c\u1ee7a th\u1eddi ti\u1ebft v\u00e0 m\u00f4i tr\u01b0\u1eddng g\u00e2y kh\u00f3 kh\u0103n cho nu\u00f4i t\u00f4m. <\/span><\/span><\/p>\n

Ngu\u1ed3n s\u1ed1 li\u1ec7u: \u0111\u01b0\u1ee3c th\u1ed1ng k\u00ea t\u1eeb b\u00e1o c\u00e1o kinh t\u1ebf – x\u00e3 h\u1ed9i c\u1ee7a B\u1ed9 N\u00f4ng nghi\u1ec7p v\u00e0 Ph\u00e1t tri\u1ec3n N\u00f4ng th\u00f4n qua t\u1eebng th\u00e1ng)<\/span><\/span><\/em><\/strong><\/span><\/p>\n

\n

Chuy\u00ean m\u1ee5c k\u0129 thu\u1eadt \u2013 <\/span><\/strong>B\u1ec7nh DECAPOD INFIDESCENT VIRUS 1 (DIV1: b\u1ec7nh \u201c\u0110\u1ea7u tr\u1eafng\u201d) tr\u00ean t\u00f4m nu\u00f4i<\/span><\/strong><\/span><\/p>\n

Decapod Iridescent Virus 1 hay DIV1(b\u1ec7nh \u201c\u0111\u1ea7u tr\u1eafng\u201d) l\u00e0 m\u1ed9t lo\u1ea1i virus l\u1ea1 tr\u00ean t\u00f4m, l\u00e2y lan nhanh t\u1ea1i trang tr\u1ea1i nu\u00f4i t\u00f4m \u1edf trung t\u00e2m nu\u00f4i t\u00f4m thu\u1ed9c Qu\u1ea3ng \u0110\u00f4ng (Trung Qu\u1ed1c), l\u00e0m t\u00f4m nu\u00f4i ch\u1ebft h\u00e0ng lo\u1ea1t trong v\u00f2ng v\u00e0i ng\u00e0y.<\/span><\/span><\/span><\/p>\n

T\u00f4m b\u1ecb nhi\u1ec5m m\u1ea1nh v\u00e0o m\u00f9a \u0111\u00f4ng. T\u00e1c \u0111\u1ed9ng c\u1ee7a b\u1ec7nh s\u1ebd nghi\u00eam tr\u1ecdng h\u01a1n khi t\u00f4m b\u1ecb b\u1ed9i nhi\u1ec5m v\u1edbi vi khu\u1ea9n vibrio, trong ao c\u00f3 t\u1ea3o b\u00f9ng ph\u00e1t m\u1ea1nh ho\u1eb7c tr\u1eddi m\u01b0a k\u00e9o d\u00e0i. T\u00f4m \u00edt b\u1ecb nhi\u1ec5m v\u00e0o m\u00f9a h\u00e8, m\u00f9a thu, nh\u1ea5t l\u00e0 khi nhi\u1ec7t \u0111\u1ed9 tr\u00ean 300<\/sup>C. Virus l\u00e2y nhi\u1ec5m cho t\u00f4m \u1edf t\u1ea5t c\u1ea3 c\u00e1c giai \u0111o\u1ea1n sinh tr\u01b0\u1edfng (postlarvae, t\u00f4m nh\u1ee1 v\u00e0 t\u00f4m tr\u01b0\u1edfng th\u00e0nh). <\/span><\/span><\/p>\n

V\u00ec \u0111\u00e2y l\u00e0 d\u1ecbch b\u1ec7nh m\u1edbi, ngu\u1ed3n g\u1ed1c c\u1ee7a virus v\u00e0 c\u00e1ch th\u1ee9c l\u00e2y truy\u1ec1n v\u1eabn ch\u01b0a r\u00f5 r\u00e0ng, t\u1ea1m th\u1eddi kh\u00f4ng c\u00f3 ph\u01b0\u01a1ng \u00e1n \u0111i\u1ec1u tr\u1ecb n\u00ean d\u1ecbch b\u1ec7nh c\u00f3 th\u1ec3 lan r\u1ed9ng n\u1ebfu kh\u00f4ng c\u00f3 s\u1ef1 quan t\u00e2m \u0111\u00fang m\u1ee9c. Do \u0111\u00f3 c\u1ea7n ph\u1ea3i th\u1ef1c hi\u1ec7n nghi\u00eam c\u00e1c ho\u1ea1t \u0111\u1ed9ng ph\u00f2ng v\u00e0 tr\u00e1nh d\u1ecbch b\u1ec7nh tr\u01b0\u1edbc v\u00e0 trong m\u1ed7i v\u1ee5 nu\u00f4i.<\/span><\/span><\/p>\n

\"\"<\/p>\n

P. vannamei kh\u1ecfe m\u1ea1nh (Control group) v\u00e0 t\u00f4m b\u1ecb b\u1ec7nh do DIV1 (Challenge group) nh\u1ea1t m\u00e0u, ru\u1ed9t r\u1ed7ng, gan nh\u1ea1t m\u00e0u (Qiu, 2017)<\/span><\/em><\/strong><\/span><\/p>\n

T\u00e1c nh\u00e2n g\u00e2y b\u1ec7nh v\u00e0 t\u00ean b\u1ec7nh: <\/span><\/strong>Virus thu\u1ed9c lo\u1ea1i DNA, m\u1ed9t th\u00e0nh vi\u00ean m\u1edbi trong h\u1ecd Iridoviridae, ph\u00e2n h\u1ecd Betairidovirinae, chi\u00a0Decapodiridovirus<\/em>\u00a0\u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean l\u00e0\u00a0decapod iridescent virus1<\/em>(DIV1). Virus DIV1 t\u1ea5n c\u00f4ng v\u00e0o t\u1ebf b\u00e0o m\u00e1u trong mang, gan t\u1ee5y v\u00e0 c\u01a1 c\u1ee7a t\u00f4m. Khi t\u00f4m b\u1ecb nhi\u1ec5m DIV1, t\u00f4m ch\u00ecm xu\u1ed1ng \u0111\u00e1y ao, m\u1ec1m v\u1ecf v\u00e0 chuy\u1ec3n m\u00e0u \u0111\u1ecf nh\u1ea1t, d\u1ea1 d\u00e0y v\u00e0 ru\u1ed9t r\u1ed7ng, b\u1ec1 m\u1eb7t v\u00e0 m\u1eb7t c\u1eaft gan t\u1ee5y nh\u1ea1t m\u00e0u.<\/span><\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Ch\u1ea9n \u0111o\u00e1n trong ph\u00f2ng th\u00ed nghi\u1ec7m<\/strong>: b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p sinh h\u1ecdc ph\u00e2n t\u1eed \u0111\u1ec3 kh\u1eb3ng \u0111\u1ecbnh c\u00f3 m\u1eb7t c\u1ee7a vi r\u00fat DIV1.<\/span><\/span><\/p>\n

D\u1ea5u hi\u1ec7u b\u1ec7nh l\u00fd:<\/span><\/em><\/strong><\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 +\u00a0\u00a0\u00a0Tri\u1ec7u ch\u1ee9ng chung:<\/em><\/strong> T\u00f4m nhi\u1ec5m b\u1ec7nh b\u01a1i l\u1edd \u0111\u1edd, m\u1ea5t kh\u1ea3 n\u0103ng b\u01a1i l\u1ed9i, \u1edf giai \u0111o\u1ea1n cu\u1ed1i t\u00f4m th\u01b0\u1eddng ch\u00ecm xu\u1ed1ng \u0111\u00e1y v\u00e0 ch\u1ebft, t\u00f4m ch\u1ebft h\u00e0ng ng\u00e0y, t\u1ef7 l\u1ec7 ch\u1ebft g\u1ea5p hai l\u1ea7n so v\u1edbi virus g\u00e2y \u0111\u1ed1m tr\u1eafng (WSSV).<\/span><\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 +\u00a0\u00a0\u00a0\u0110\u1ed1i v\u1edbi t\u00f4m th\u1ebb ch\u00e2n tr\u1eafng:<\/em><\/strong> d\u1ea5u hi\u1ec7u t\u00f4m b\u1ecb nhi\u1ec5m DIV1 kh\u00f4ng \u0111i\u1ec3n h\u00ecnh bao g\u1ed3m c\u00e1c d\u1ea5u hi\u1ec7u: c\u01a1 th\u1ec3 c\u00f3 m\u00e0u h\u01a1i \u0111\u1ecf, gan t\u1ee5y teo v\u00e0 nh\u1ea1t m\u00e0u, d\u1ea1 d\u00e0y v\u00e0 ru\u1ed9t r\u1ed7ng, m\u1ec1m v\u1ecf \u0111\u1ee5c c\u01a1. T\u00f4m b\u1ecb b\u1ec7nh nhi\u1ec5m b\u1ec7nh DIV1 kh\u00f4ng c\u00f3 tri\u1ec7u ch\u1ee9ng, b\u1ec7nh t\u00edch \u0111i\u1ec3n h\u00ecnh v\u00e0 d\u1ec5 nh\u1ea7m l\u1eabn v\u1edbi c\u00e1c b\u1ec7nh kh\u00e1c <\/span><\/span><\/p>\n

+\u00a0\u00a0\u00a0\u0110\u1ed1i v\u1edbi t\u00f4m c\u00e0ng xanh<\/strong>\u00a0M. rosenbergii<\/em>: T\u00f4m b\u1ecb b\u1ec7nh DIV1 d\u1ea5u hi\u1ec7u \u0111i\u1ec3n h\u00ecnh l\u00e0 c\u00f3 m\u1ed9t m\u1ed9t v\u00f9ng \u0111\u1eb7c tr\u01b0ng h\u00ecnh tam gi\u00e1c m\u00e0u tr\u1eafng b\u00ean trong ph\u1ea7n gi\u00e1p \u0111\u1ea7u ng\u1ef1c (d\u01b0\u1edbi ch\u1ee7y \u0111\u1ea7u) n\u00ean g\u1ecdi l\u00e0 b\u1ec7nh “\u0111\u1ea7u tr\u1eafng”. Do v\u1eady, c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng t\u00f4m c\u00e0ng xanh nh\u01b0 m\u1ed9t lo\u00e0i ch\u1ec9 th\u1ecb trong tr\u01b0\u1eddng h\u1ee3p nghi ng\u1edd c\u00f3 b\u1ec7nh do DIV1 xu\u1ea5t hi\u1ec7n.\u00a0<\/span><\/span><\/p>\n

\"\"<\/p>\n

Tri\u1ec7u ch\u1ee9ng l\u00e2m c\u1ee7a t\u00f4m c\u00e0ng xanh b\u1ecb nhi\u1ec5m t\u1ef1 nhi\u00ean v\u1edbi DIV1.<\/span><\/span><\/em><\/strong><\/span><\/p>\n

(A) H\u00ecnh d\u00e1ng t\u1ed5ng th\u1ec3 m\u1ed9t con t\u00f4m b\u1ecb b\u1ec7nh trong n\u01b0\u1edbc. (B) C\u1eadn c\u1ea3nh \u0111\u1ea7u ng\u1ef1c: M\u0169i t\u00ean m\u00e0u xanh cho th\u1ea5y khu v\u1ef1c m\u00e0u tr\u1eafng d\u01b0\u1edbi l\u1edbp bi\u1ec3u b\u00ec. M\u0169i t\u00ean tr\u1eafng bi\u1ec3u th\u1ecb teo gan, phai m\u00e0u v\u00e0 v\u00e0ng.<\/span><\/span><\/em><\/strong><\/span><\/p>\n

C\u00e1c bi\u1ec7n ph\u00e1p ph\u00f2ng, ch\u1ed1ng d\u1ecbch b\u1ec7nh t\u1ea1i Vi\u1ec7t nam<\/span><\/strong><\/span><\/p>\n

B\u1ec7nh do DIV1 \u0111\u1ebfn nay ch\u01b0a c\u00f3 thu\u1ed1c \u0111i\u1ec1u tr\u1ecb \u0111\u1eb7c hi\u1ec7u c\u0169ng nh\u01b0 v\u1eafc xin \u0111\u1ec3 ph\u00f2ng b\u1ec7nh.<\/span><\/span><\/p>\n

\u0110\u1ec3 ph\u00f2ng, ch\u1ed1ng d\u1ecbch b\u1ec7nh, c\u00e1c \u0111\u1ecba ph\u01b0\u01a1ng v\u00e0 \u0111\u01a1n v\u1ecb th\u1ef1c hi\u1ec7n c\u00e1c bi\u1ec7n ph\u00e1p t\u1ed5ng h\u1ee3p theo quy \u0111\u1ecbnh t\u1ea1i Th\u00f4ng t\u01b0 04\/2016\/TT-B\u1ed9 NNPTNT v\u00e0 m\u1ed9t s\u1ed1 n\u1ed9i dung ch\u00ednh sau \u0111\u00e2y:\u00a0<\/span><\/span><\/p>\n

Ph\u00f2ng, ch\u1ed1ng d\u1ecbch b\u1ec7nh t\u1ea1i c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t t\u00f4m gi\u1ed1ng<\/span><\/strong><\/span><\/p>\n

\u00a0–\u00a0\u00a0\u00a0Ki\u1ec3m so\u00e1t ch\u1eb7t t\u00f4m gi\u1ed1ng, t\u00f4m b\u1ed1 m\u1eb9 nh\u1eadp kh\u1ea9u t\u1eeb qu\u1ed1c gia, v\u00f9ng l\u00e3nh th\u1ed5 c\u00f3 virus DIV1. \u0110\u1ed1i v\u1edbi t\u00f4m gi\u1ed1ng (Postlarvae) l\u1ea5y m\u1eabu \u0111\u1ec3 x\u00e9t nghi\u1ec7m b\u1ec7nh DIV1, \u0111\u1ea3m b\u1ea3o t\u00f4m kh\u00f4ng b\u1ecb nhi\u1ec5m DIV1 tr\u01b0\u1edbc khi xu\u1ea5t b\u00e1n v\u00e0 th\u1ef1c hi\u1ec7n ki\u1ec3m d\u1ecbch theo quy \u0111\u1ecbnh.<\/span><\/span><\/p>\n

–\u00a0\u00a0\u00a0T\u1ed5 ch\u1ee9c x\u00e2y d\u1ef1ng c\u01a1 s\u1edf an to\u00e0n d\u1ecbch b\u1ec7nh theo quy \u0111\u1ecbnh t\u1ea1i Th\u00f4ng t\u01b0 s\u1ed1 14\/2016\/TT-BNNPTNT ng\u00e0y 02\/6\/2016 c\u1ee7a B\u1ed9 tr\u01b0\u1edfng B\u1ed9 N\u00f4ng nghi\u1ec7p v\u00e0 Ph\u00e1t tri\u1ec3n n\u00f4ng th\u00f4n.<\/span><\/span><\/p>\n

–\u00a0\u00a0\u00a0\u0110\u1ed1i v\u1edbi ngu\u1ed3n th\u1ee9c \u0103n t\u01b0\u01a1i s\u1ed1ng cho t\u00f4m b\u1ed1 m\u1eb9 ph\u1ea3i ki\u1ec3m so\u00e1t ch\u1eb7t, x\u00e2y d\u1ef1ng ph\u01b0\u01a1ng ph\u00e1p x\u1eed l\u00fd \u0111\u1ea3m b\u1ea3o ti\u00eau di\u1ec7t DIV1 tr\u01b0\u1edbc khi s\u1eed d\u1ee5ng.<\/span><\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 –\u00a0\u00a0\u00a0\u0110\u1ed1i v\u1edbi ngu\u1ed3n n\u01b0\u1edbc nu\u00f4i: X\u00e2y d\u1ef1ng quy tr\u00ecnh kh\u1eed tr\u00f9ng n\u01b0\u1edbc nu\u00f4i \u0111\u1ec3 ti\u00eau di\u1ec7t c\u00e1c t\u00e1c nh\u00e2n g\u00e2y b\u1ec7nh (trong \u0111\u00f3 c\u00f3 DIV1) tr\u01b0\u1edbc khi \u0111\u01b0a v\u00e0o s\u1eed d\u1ee5ng.<\/span><\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 –\u00a0\u00a0\u00a0\u0110\u1ed1i v\u1edbi c\u00f4ng c\u1ee5, d\u1ee5ng c\u1ee5, ph\u01b0\u01a1ng ti\u1ec7n v\u1eadn chuy\u1ec3n, ng\u01b0\u1eddi ra v\u00e0o tr\u1ea1i: Ph\u1ea3i c\u00f3 quy tr\u00ecnh v\u1ec7 sinh, kh\u1eed tr\u00f9ng ti\u00eau \u0111\u1ed9c, b\u1ea3o \u0111\u1ea3m hi\u1ec7u qu\u1ea3 kh\u1eed tr\u00f9ng (b\u1ea3o h\u1ed9, h\u1ed1 kh\u1eed tr\u00f9ng, kh\u1eed tr\u00f9ng \u0111\u1ecbnh k\u1ef3, \u2026).<\/span><\/span><\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0–\u00a0\u00a0\u00a0X\u1eed l\u00fd \u1ed5 d\u1ecbch ph\u1ea3i \u0111\u1ea3m b\u1ea3o: To\u00e0n b\u1ed9 d\u1ee5ng c\u1ee5, ph\u01b0\u01a1ng ti\u1ec7n ch\u1ee9a \u0111\u1ef1ng, v\u1eadn chuy\u1ec3n, b\u1ec3 nu\u00f4i, … ph\u1ea3i \u0111\u01b0\u1ee3c kh\u1eed tr\u00f9ng b\u1eb1ng ch\u1ea5t s\u00e1t tr\u00f9ng v\u00e0 ph\u01b0\u01a1ng ph\u00e1p ph\u00f9 h\u1ee3p; n\u01b0\u1edbc trong ao b\u1ec7nh ph\u1ea3i \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1eb1ng Chlorine n\u1ed3ng \u0111\u1ed9 30 ppm, ng\u00e2m trong 7 ng\u00e0y tr\u01b0\u1edbc khi x\u1ea3 ra ngo\u00e0i m\u00f4i tr\u01b0\u1eddng; c\u00e1c ch\u1ea5t c\u1eb7n b\u00e3, b\u00f9n \u0111\u00e1y ao, … trong qu\u00e1 tr\u00ecnh nu\u00f4i ph\u1ea3i \u0111\u01b0\u1ee3c thu gom v\u00e0 x\u1eed l\u00fd t\u1ea1i khu v\u1ef1c ri\u00eang (ngo\u00e0i khu v\u1ef1c s\u1ea3n xu\u1ea5t).<\/span><\/span><\/p>\n

\"\"<\/p>\n

\u00a0b) Ph\u00f2ng ch\u1ed1ng d\u1ecbch b\u1ec7nh t\u1ea1i c\u01a1 s\u1edf nu\u00f4i t\u00f4m th\u01b0\u01a1ng ph\u1ea9m<\/strong><\/span><\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 –\u00a0\u00a0\u00a0X\u1eed l\u00fd ao sau m\u1ed7i v\u1ee5 nu\u00f4i:<\/strong> To\u00e0n b\u1ed9 b\u00f9n \u0111\u00e1y ao, ch\u1ea5t th\u1ea3i trong qu\u00e1 tr\u00ecnh nu\u00f4i ph\u1ea3i \u0111\u01b0\u1ee3c thu gom, \u0111\u01b0a ra ngo\u00e0i khu v\u1ef1c nu\u00f4i \u0111\u1ec3 ph\u01a1i kh\u00f4. \u0110\u00e1y ao \u0111\u1ea5t sau m\u1ed7i v\u1ee5 nu\u00f4i ph\u1ea3i \u0111\u01b0\u1ee3c ph\u01a1i kh\u00f4 n\u1ee9t ch\u00e2n chim (\u0111\u1ed1i v\u1edbi ao kh\u00f4ng nhi\u1ec5m ph\u00e8n). \u0110\u1ed1i v\u1edbi ao ph\u1ee7 b\u1ea1t, r\u1eeda s\u1ea1ch b\u1eb1ng n\u01b0\u1edbc ng\u1ecdt, ph\u01a1i kh\u00f4 v\u00e0 kh\u1eed tr\u00f9ng b\u1eb1ng n\u01b0\u1edbc v\u00f4i ho\u1eb7c h\u00f3a ch\u1ea5t.\u00a0<\/span><\/span><\/p>\n

–\u00a0\u00a0\u00a0C\u1ea3i t\u1ea1o \u0111\u00e1y ao:<\/strong> s\u1eed d\u1ee5ng v\u00f4i b\u1ed9t (CaO) r\u1eafc \u0111\u1ec1u m\u1ed9t l\u1edbp d\u01b0\u1edbi \u0111\u00e1y ao, sau \u0111\u00f3 cho n\u01b0\u1edbc v\u00e0o ng\u00e2m, duy tr\u00ec \u0111\u1ed9 pH kho\u1ea3ng 11-12 (\u0111\u1ec3 ti\u00eau di\u1ec7t DIV1 c\u00f2n s\u00f3t l\u1ea1i trong \u0111\u00e1y ao) trong kho\u1ea3ng 5 ng\u00e0y tr\u01b0\u1edbc khi \u0111i\u1ec1u ch\u1ec9nh l\u1ea1i pH ao nu\u00f4i cho ph\u00f9 h\u1ee3p v\u1edbi con t\u00f4m.<\/span><\/span><\/p>\n

–\u00a0\u00a0\u00a0X\u1eed l\u00fd n\u01b0\u1edbc ao nu\u00f4i:<\/strong> l\u1ea5y n\u01b0\u1edbc qua h\u1ec7 th\u1ed1ng t\u00fai l\u1ecdc \u0111\u1ec3 lo\u1ea1i b\u1ecf m\u1ed9t s\u1ed1 lo\u00e0i trung gian truy\u1ec1n b\u1ec7nh c\u0169ng nh\u01b0 ng\u0103n ch\u1eb7n c\u00e1c lo\u00e0i th\u1ee7y s\u1ea3n kh\u00e1c x\u00e2m nh\u1eadp v\u00e0o c\u01a1 s\u1edf. N\u01b0\u1edbc trong ao x\u1eed l\u00fd\/ ch\u1ee9a l\u1eafng ph\u1ea3i \u0111\u01b0\u1ee3c kh\u1eed tr\u00f9ng b\u1eb1ng Chlorine n\u1ed3ng \u0111\u1ed9 t\u1eeb 15-30ppm <\/span><\/span><\/p>\n

–\u00a0\u00a0\u00a0Con gi\u1ed1ng:<\/strong> Ch\u1ecdn con gi\u1ed1ng kh\u1ecfe m\u1ea1nh, \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m d\u1ecbch. Khuy\u1ebfn c\u00e1o ng\u01b0\u1eddi nu\u00f4i tu\u00e2n th\u1ee7 l\u1ecbch th\u1ea3 gi\u1ed1ng theo h\u01b0\u1edbng d\u1eabn c\u1ee7a c\u00e1c c\u01a1 quan chuy\u00ean m\u00f4n.<\/span><\/span><\/p>\n

–\u00a0\u00a0\u00a0Trong qu\u00e1 tr\u00ecnh nu\u00f4i:<\/strong> ch\u1ec9 s\u1eed d\u1ee5ng th\u1ee9c \u0103n t\u01b0\u01a1i s\u1ed1ng c\u00f3 ngu\u1ed3n g\u1ed1c r\u00f5 r\u00e0ng ho\u1eb7c \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e9t nghi\u1ec7m b\u1ec7nh do DIV1 tr\u01b0\u1edbc khi s\u1eed d\u1ee5ng; \u0111\u1ed3ng th\u1eddi \u00e1p d\u1ee5ng c\u00e1c bi\u1ec7n ph\u00e1p an ninh sinh h\u1ecdc \u0111\u1ec3 qu\u1ea3n l\u00fd ao t\u00f4m nh\u01b0: h\u1ea1n ch\u1ebf cho ng\u01b0\u1eddi l\u1ea1 v\u00e0o khu v\u1ef1c nu\u00f4i, th\u1ef1c hi\u1ec7n kh\u1eed tr\u00f9ng d\u1ee5ng c\u1ee5 ngay sau khi s\u1eed d\u1ee5ng; ngu\u1ed3n n\u01b0\u1edbc nu\u00f4i (thay m\u1edbi ho\u1eb7c b\u1ed5 sung v\u00e0o ao nu\u00f4i) ph\u1ea3i \u0111\u01b0\u1ee3c kh\u1eed tr\u00f9ng; b\u1edd ao ph\u1ea3i \u0111\u01b0\u1ee3c qu\u00e2y l\u01b0\u1edbi ch\u1eafn gi\u00e1p x\u00e1c v\u00e0 c\u00f3 bi\u1ec7n ph\u00e1p xua \u0111u\u1ed5i chim c\u00f2 t\u1ef1 nhi\u00ean<\/span><\/span><\/p>\n

X\u1eed l\u00fd \u1ed5 d\u1ecbch ph\u1ea3i \u0111\u1ea3m b\u1ea3o: To\u00e0n b\u1ed9 d\u1ee5ng c\u1ee5, ph\u01b0\u01a1ng ti\u1ec7n ch\u1ee9a \u0111\u1ef1ng, v\u1eadn chuy\u1ec3n, b\u1ec3 nu\u00f4i, … ph\u1ea3i \u0111\u01b0\u1ee3c kh\u1eed tr\u00f9ng b\u1eb1ng ch\u1ea5t s\u00e1t tr\u00f9ng v\u00e0 ph\u01b0\u01a1ng ph\u00e1p ph\u00f9 h\u1ee3p; n\u01b0\u1edbc trong ao b\u1ec7nh ph\u1ea3i \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1eb1ng Chlorine n\u1ed3ng \u0111\u1ed9 30ppm, ng\u00e2m trong 7 ng\u00e0y tr\u01b0\u1edbc khi x\u1ea3 ra ngo\u00e0i m\u00f4i tr\u01b0\u1eddng; c\u00e1c ch\u1ea5t c\u1eb7n b\u00e3, b\u00f9n \u0111\u00e1y ao, … trong qu\u00e1 tr\u00ecnh nu\u00f4i ph\u1ea3i \u0111\u01b0\u1ee3c thu gom v\u00e0 x\u1eed l\u00fd t\u1ea1i khu v\u1ef1c ri\u00eang.<\/span><\/span><\/p>\n

Ngu\u1ed3n: Trung t\u00e2m Nghi\u00ean c\u1ee9u \u0110\u1ed5i m\u1edbi Th\u1ee7y s\u1ea3n – AIC<\/span><\/em><\/strong><\/span><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

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