{"id":2542,"date":"2022-08-31T09:52:31","date_gmt":"2022-08-31T02:52:31","guid":{"rendered":"https:\/\/www.greenfeed.com.vn\/thuy-san\/?p=2542"},"modified":"2022-08-31T10:11:16","modified_gmt":"2022-08-31T03:11:16","slug":"luan-trung-moina-daphnia-nguon-thuc-an-quan-trong-cho-ca-bot","status":"publish","type":"post","link":"https:\/\/www.greenfeed.com.vn\/thuy-san\/luan-trung-moina-daphnia-nguon-thuc-an-quan-trong-cho-ca-bot\/","title":{"rendered":"Lu\u00e2n Tr\u00f9ng – Moina – Daphnia (Ngu\u1ed3n th\u1ee9c \u0103n quan tr\u1ecdng cho C\u00e1 B\u1ed9t)"},"content":{"rendered":"

LU\u00c2N TR\u00d9NG (Rotifer<\/em>)<\/strong><\/h2>\n

Lu\u00e2n tr\u00f9ng l\u00e0 nh\u1eefng \u0111\u1ed9ng v\u1eadt phi\u00eau sinh c\u00f3 k\u00edch th\u01b0\u1edbc nh\u1ecf (100 – 300\u00b5m) c\u00f3 nhi\u1ec1u h\u00ecnh d\u1ea1ng kh\u00e1c nhau, b\u01a1i l\u1ed9i ch\u1eadm, ph\u00f9 h\u1ee3p v\u1edbi k\u00edch th\u01b0\u1edbc mi\u1ec7ng c\u00e1, t\u00f4m gi\u1ed1ng. \u0110\u1eb7c bi\u1ec7t, lu\u00e2n tr\u00f9ng c\u00f3 gi\u00e1 tr\u1ecb dinh d\u01b0\u1ee1ng cao (gi\u00e0u acid b\u00e9o v\u00e0 HUFA) n\u00ean lu\u00e2n tr\u00f9ng (\u0111\u1ea1i di\u1ec7n l\u00e0 gi\u1ed1ng Brachionus) l\u00e0 ngu\u1ed3n th\u1ee9c \u0103n t\u1ef1 nhi\u00ean \u0111\u1ea7u ti\u00ean v\u00e0 r\u1ea5t quan tr\u1ecdng c\u1ee7a c\u00e1 b\u1ed9t sau khi \u0111\u00e3 s\u1eed d\u1ee5ng h\u1ebft no\u00e3n ho\u00e0n.<\/p>\n

Trong c\u00e1c c\u00e1c d\u1ea1ng th\u1ee7y v\u1ef1c n\u01b0\u1edbc ng\u1ecdt Lu\u00e2n tr\u00f9ng ph\u00e2n b\u1ed1 r\u1ed9ng \u1edf ao, \u0111\u1ea7m \u2026 v\u1edbi t\u1eadp t\u00ednh \u0103n l\u1ecdc n\u00ean th\u1ee9c \u0103n c\u1ee7a lu\u00e2n tr\u00f9ng ch\u1ee7 y\u1ebfu l\u00e0 vi t\u1ea3o, vi khu\u1ea9n, m\u00f9n x\u00e1c h\u1eefu c\u01a1, v\u1eadt th\u1ec3 li ti l\u01a1 l\u1eedng trong n\u01b0\u1edbc.<\/p>\n

Lu\u00e2n tr\u00f9ng c\u00f3 v\u00f2ng \u0111\u1eddi ng\u1eafn, dao \u0111\u1ed9ng trong kho\u1ea3ng v\u00e0i ng\u00e0y \u0111\u1ebfn v\u00e0i tu\u1ea7n t\u00f9y theo lo\u00e0i, qu\u1ea7n th\u1ec3 c\u00f3 th\u1ec3 nh\u00e2n l\u00ean nhi\u1ec1u l\u1ea7n trong th\u1eddi gian ng\u1eafn, v\u00ec v\u1eady th\u00edch h\u1ee3p cho vi\u1ec7c nu\u00f4i sinh kh\u1ed1i.<\/p>\n

Gi\u00e1 tr\u1ecb dinh d\u01b0\u1ee1ng c\u1ee7a<\/em><\/strong> lu\u00e2n tr\u00f9ng c\u00f3 th\u00e0nh ph\u1ea7n axit b\u00e9o kh\u00f4ng no c\u00f3 ch\u1ee9a EPA, DHA, l\u00e0 axit b\u00e9o thi\u1ebft y\u1ebfu, c\u00f3 t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn t\u1ef7 l\u1ec7 s\u1ed1ng v\u00e0 s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e1 b\u1ed9t. V\u00ec v\u1eady, lu\u00e2n tr\u00f9ng \u0111\u00e3 tr\u1edf th\u00e0nh ngu\u1ed3n th\u1ee9c \u0103n t\u01b0\u01a1i s\u1ed1ng kh\u00f4ng th\u1ec3 thi\u1ebfu trong s\u1ea3n xu\u1ea5t gi\u1ed1ng.<\/em><\/strong><\/p>\n

\"\"<\/p>\n

C\u00f3 nhi\u1ec1u ph\u01b0\u01a1ng ph\u00e1p nu\u00f4i lu\u00e2n tr\u00f9ng ph\u1ed1 bi\u1ebfn sau:<\/strong><\/p>\n

–<\/strong> Nu\u00f4i theo ph\u01b0\u01a1ng ph\u00e1p thu ho\u1ea1ch to\u00e0n b\u1ed9:<\/strong> Lu\u00e2n tr\u00f9ng \u0111\u01b0\u1ee3c c\u1ea5y v\u00e0o m\u00f4i tr\u01b0\u1eddng \u0111\u00e3 g\u00e2y nu\u00f4i vi t\u1ea3o \u1edf m\u1eadt \u0111\u1ed9 cao l\u00e0m th\u1ee9c \u0103n cho lu\u00e2n tr\u00f9ng. Khi lu\u00e2n tr\u00f9ng s\u1eed d\u1ee5ng h\u1ebft l\u01b0\u1ee3ng t\u1ea3o th\u00ec thu ho\u1ea1ch to\u00e0n b\u1ed9 v\u00e0 d\u00f9ng m\u1ed9t ph\u1ea7n l\u00e0m gi\u1ed1ng cho c\u00e1c \u0111\u1ee3t nu\u00f4i kh\u00e1c.<\/p>\n

– Nu\u00f4i theo ph\u01b0\u01a1ng ph\u00e1p thu ho\u1ea1ch b\u00e1n li\u00ean t\u1ee5c: <\/strong>Lu\u00e2n tr\u00f9ng s\u1ebd th\u1ea3 v\u1edbi m\u1eadt \u0111\u1ed9 th\u1ea5p trong c\u00e1c b\u1ec3 \u0111\u01b0\u1ee3c c\u1ea5y t\u1ea3o. Khi t\u1ea3o \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng h\u1ebft, lu\u00e2n tr\u00f9ng \u0111\u01b0\u1ee3c ti\u1ebfp t\u1ee5c cho \u0103n ngu\u1ed3n t\u1ea3o t\u1eeb b\u00ean ngo\u00e0i b\u1eb1ng men b\u00e1nh m\u00ec. Khi m\u1eadt \u0111\u1ed9 lu\u00e2n tr\u00f9ng t\u01b0\u01a1ng \u0111\u1ed1i cao th\u00ec thu ho\u1ea1ch kho\u1ea3ng 10-30% th\u1ec3 t\u00edch nu\u00f4i \u0111\u1ed3ng th\u1eddi b\u1ed5 sung l\u01b0\u1ee3ng n\u01b0\u1edbc m\u1edbi v\u00e0o. Sau v\u00e0i l\u1ea7n thu ho\u1ea1ch, m\u1eadt \u0111\u1ed9 lu\u00e2n tr\u00f9ng gi\u1ea3m s\u1ebd \u0111\u01b0\u1ee3c nu\u00f4i c\u1ea5y sang b\u1ec3 m\u1edbi.<\/p>\n

– Nu\u00f4i b\u1eb1ng h\u1ec7 th\u1ed1ng tu\u1ea7n ho\u00e0n: <\/strong>Nu\u00f4i lu\u00e2n tr\u00f9ng v\u1edbi m\u1eadt \u0111\u1ed9 cao th\u01b0\u1eddng d\u1eabn \u0111\u1ebfn s\u1ef1 \u00f4 nhi\u1ec5m do ph\u00e2n hu\u1ef7 th\u1ee9c \u0103n th\u1eeba v\u00e0 t\u00edch t\u1ee5 c\u1ee7a ch\u1ea5t th\u1ea3i. Ph\u01b0\u01a1ng ph\u00e1p c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc b\u1eb1ng c\u00e1ch x\u00e2y d\u1ef1ng m\u1ed9t h\u1ec7 th\u1ed1ng b\u1ec3 nu\u00f4i (500 l\u00edt v\u00e0 m\u1ed9t b\u1ec3 150 l\u00edt) \u0111\u1ec3 t\u1ea1o d\u00f2ng ch\u1ea3y l\u01b0u th\u00f4ng. Sau \u0111\u00f3 l\u1ecdc n\u01b0\u1edbc thu c\u00e1c ch\u1ea5t th\u1ea3i theo \u0111\u1ecbnh k\u1ef3. C\u00e1c ch\u1ea5t th\u1ea3i cho v\u00e0o b\u1ec3 c\u00f3 ch\u1ee9a c\u00e1c lo\u1ea1i vi khu\u1ea9n ph\u00e2n hu\u1ef7 t\u1ea1o th\u00e0nh c\u00e1c ch\u1ea5t v\u00f4 c\u01a1 v\u00e0 ch\u1ea5t kho\u00e1ng. Nh\u1eefng ch\u1ea5t kho\u00e1ng n\u00e0y \u0111\u01b0\u1ee3c d\u00f9ng l\u1ea1i \u0111\u1ec3 nu\u00f4i t\u1ea3o v\u00e0 d\u00f9ng t\u1ea3o nu\u00f4i lu\u00e2n tr\u00f9ng.<\/p>\n

\"\"<\/p>\n

+ \u01afu \u2013 khuy\u1ebft \u0111i\u1ec3m lo\u1ea1i th\u1ee9c \u0103n g\u00e2y nu\u00f4i t\u1ea3o (l\u00e0m th\u1ee9c \u0103n cho Rotifer): \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/em><\/strong><\/p>\n

Nu\u00f4i b\u1eb1ng t\u1ea3o:<\/em><\/strong> N\u0103ng su\u1ea5t thu ho\u1ea1ch cao; D\u1ec5 qu\u1ea3n l\u00fd m\u00f4i tr\u01b0\u1eddng nu\u00f4i \u2013 chi ph\u00ed h\u1ec7 th\u1ed1ng b\u1ec3 nu\u00f4i t\u1ea3o v\u00e0 C\u00f4ng lao \u0111\u1ed9ng do nu\u00f4i t\u1ea3o kh\u00e1 cao.<\/p>\n

Nu\u00f4i b\u1eb1ng men b\u00e1nh m\u00ec:<\/em><\/strong> Ch\u1ee7 \u0111\u1ed9ng \u0111\u01b0\u1ee3c ngu\u1ed3n th\u1ee9c \u0103n , Kh\u00f4ng t\u1ed1n th\u00eam b\u1ec3 nu\u00f4i t\u1ea3o \u00cdt t\u1ed1n c\u00f4ng lao \u0111\u1ed9ng . N\u0103ng su\u1ea5t thu ho\u1ea1ch th\u1ea5p<\/p>\n

\"Nh\u1eefng

Nh\u1eefng thi\u1ebft b\u1ecb g\u00e2y nu\u00f4i lu\u00e2n tr\u00f9ng theo quy m\u00f4 nh\u1ecf<\/p><\/div>\n

GI\u00c1P X\u00c1C CH\u00c2N CH\u00c8O Copepoda \u2013 Daphnia (r\u1eadn n\u01b0\u1edbc)<\/em><\/strong><\/h2>\n

Gi\u00e1p x\u00e1c ch\u00e2n ch\u00e8o\u00a0(Copepoda) <\/em>hay Daphnia l\u00e0 lo\u00e0i gi\u00e1p x\u00e1c n\u01b0\u1edbc ng\u1ecdt nh\u1ecf. L\u00e0 m\u1ed9t trong nh\u1eefng nh\u00f3m \u0111\u1ed9ng v\u1eadt ph\u00f9 du ph\u00e2n b\u1ed1 kh\u00e1 r\u1ed9ng \u1edf nhi\u1ec1u d\u1ea1ng th\u1ee7y v\u1ef1c kh\u00e1c nhau t\u1eeb n\u01b0\u1edbc ng\u1ecdt, n\u01b0\u1edbc l\u1ee3, n\u01b0\u1edbc m\u1eb7n \u0111\u1ebfn c\u00e1c d\u1ea1ng m\u00f4i tr\u01b0\u1eddng \u0111\u1eb7c bi\u1ec7t nh\u01b0 trong c\u00e1t v\u00e0 n\u1ec1n \u0111\u00e1y.<\/p>\n

T\u1ea1i c\u00e1c th\u1ee7y v\u1ef1c n\u01b0\u1edbc ng\u1ecdt, \u0111\u00e3 ghi nh\u1eadn h\u01a1n 2,800 lo\u00e0i gi\u00e1p x\u00e1c ch\u00e2n ch\u00e8o ch\u1ee7 y\u1ebfu thu\u1ed9c 3 b\u1ed9 Calanoida, Harpacticoida, Cyclopoida<\/em> ph\u00e2n b\u1ed1 \u1edf nhi\u1ec1u d\u1ea1ng th\u1ee7y v\u1ef1c t\u1eeb s\u00f4ng, h\u1ed3, sinh c\u1ea3nh c\u00e1t cho \u0111\u1ebfn trong n\u01b0\u1edbc ng\u1ea7m.<\/p>\n

Gi\u00e1p x\u00e1c ch\u00e2n ch\u00e8o\u00a0Copepoda l\u00e0 th\u1ee9c \u0103n t\u01b0\u01a1i s\u1ed1ng c\u00f3 gi\u00e1 tr\u1ecb dinh d\u01b0\u1ee1ng cao cho c\u00e1 gi\u1ed1ng. V\u1edbi h\u00e0m l\u01b0\u1ee3ng protein \u2013 c\u00e1c enzyme ti\u00eau h\u00f3a (proteases, enzyme ti\u00eau h\u00f3a protein v\u00e0 peptide) cao, h\u1ed9i t\u1ee5 \u0111\u1ee7 acid amin, lipid v\u00e0 vitamin. Th\u00edch h\u1ee3p cho nhu c\u1ea7u dinh d\u01b0\u1ee1ng v\u00e0 l\u00e0 th\u1ee9c \u0103n trong s\u1ea3n xu\u1ea5t gi\u1ed1ng c\u00e1c lo\u00e0i th\u1ee7y h\u1ea3i s\u1ea3n c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf<\/p>\n

Trong chu\u1ed7i th\u1ee9c \u0103n t\u1ef1 nhi\u00ean Gi\u00e1p x\u00e1c ch\u00e2n ch\u00e8o\u00a0(Copepoda) <\/em>\u0111\u00f3ng vai tr\u00f2 l\u00e0 m\u1eaft x\u00edch r\u1ea5t quan tr\u1ecdng cho c\u00e1c \u0111\u1ed9ng v\u1eadt thu\u1ef7 sinh, t\u00f4m – c\u00e1\u2026 v\u00e0 l\u00e0 nh\u00f3m sinh v\u1eadt ch\u1ec9 th\u1ecb \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 ch\u1ea5t l\u01b0\u1ee3ng m\u00f4i tr\u01b0\u1eddng n\u01b0\u1edbc.<\/p>\n

 <\/p>\n

\"\"<\/p>\n

GI\u00c1P X\u00c1C R\u00c2U NG\u00c0NH Cladocera \u2013 Moina (BOBO hay TR\u1ee8NG N\u01af\u1edaC)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/em><\/strong><\/h2>\n

Moina thu\u1ed9c nh\u00f3m gi\u00e1p x\u00e1c r\u00e2u ng\u00e0nh (Cladocera) c\u00f2n g\u1ecdi l\u00e0 \u201cbo bo\u201d hay \u201ctr\u1ee9ng n\u01b0\u1edbc\u201d. C\u1ea5u t\u1ea1o c\u01a1 th\u1ec3 c\u1ee7a moina g\u1ed3m \u0111\u1ea7u v\u00e0 th\u00e2n. r\u00e2u l\u00e0 ph\u01b0\u01a1ng ti\u1ec7n di chuy\u1ec3n ch\u00ednh. Moina tr\u01b0\u1edfng th\u00e0nh (700 \u2013 1.000 \u00b5m) moina m\u1edbi n\u1edf – moina non (nh\u1ecf h\u01a1n 400 \u00b5m). L\u00e0 lo\u1ea1i gi\u00e1p x\u00e1c nh\u1ecf c\u00f3 gi\u00e1 tr\u1ecb dinh d\u01b0\u1ee1ng cao v\u00e0 l\u00e0 th\u1ee9c \u0103n v\u00f4 c\u00f9ng quan tr\u1ecdng cho \u1ea5u tr\u00f9ng \u0111\u1ed9ng v\u1eadt th\u1ee7y s\u1ea3n, \u0111\u1eb7c bi\u1ec7t l\u00e0 giai \u0111o\u1ea1n v\u1eeba h\u1ebft no\u00e3n ho\u00e0ng.<\/p>\n

L\u1eabn trong n\u01b0\u1edbc th\u01b0\u1eddng c\u00f3 c\u00e1c gi\u1ed1ng kh\u00e1c nh\u01b0: Daphnia.Cyclop\u2026 Moina ch\u1ee7 y\u1ebfu\u00a0ph\u00e2n b\u1ed1 \u1edf n\u01b0\u1edbc ng\u1ecdt th\u01b0\u1eddng t\u1eadp trung th\u00e0nh \u0111\u00e1m d\u00e0y \u0111\u1eb7c m\u00e0u \u0111\u1ecf v\u00e0o bu\u1ed5i s\u00e1ng s\u1edbm\u00a0trong c\u00e1c ao h\u1ed3, v\u00f9ng n\u01b0\u1edbc \u0111\u1ecdng c\u1ee7a c\u1ed1ng r\u00e3nh c\u00f3 nhi\u1ec1u ch\u1ea5t h\u1eefu c\u01a1.<\/p>\n

Ma\u0300u s\u0103\u0301c moina do th\u01b0\u0301c \u0103n va\u0300 \u00f4xy ho\u0300a tan (DO) quy\u00ea\u0301t \u0111i\u0323nh. Khi m\u1eadt \u0111\u1ed9 DO th\u00e2\u0301p, ch\u00fang co\u0301 ma\u0300u \u0111o\u0309 do l\u01b0\u01a1\u0323ng hemoglobin cao. Th\u00f4ng th\u01b0\u1eddng moina non c\u00f3 m\u00e0u \u0111\u1ecf nh\u1ea1t h\u01a1n moina tr\u01b0\u1edfng th\u00e0nh.<\/p>\n

Sinh sa\u0309n: Co\u0301 2 hi\u0300nh th\u01b0\u0301c sinh sa\u0309n (t\u01b0\u01a1ng t\u01b0\u0323 nh\u01b0 lu\u00e2n tru\u0300ng):<\/p>\n

    \n
  • \u0110\u01a1n ti\u0301nh (v\u00f4 ti\u0301nh): Trong \u0111i\u00ea\u0300u ki\u00ea\u0323n m\u00f4i tr\u01b0\u01a1\u0300ng thu\u00e2\u0323n l\u01a1\u0323i<\/li>\n
  • H\u01b0\u0303u ti\u0301nh: Khi \u0111i\u00ea\u0300u ki\u00ea\u0323n m\u00f4i tr\u01b0\u01a1\u0300ng kh\u00f4ng thu\u00e2\u0323n l\u01a1\u0323i.<\/li>\n<\/ul>\n

    S\u1ed1 l\u01b0\u1ee3ng moina ph\u00e1t tri\u1ec3n nhanh v\u00e0 gi\u00e1 tr\u1ecb dinh d\u01b0\u1ee1ng c\u1ee7a moina cao \u0111\u1ec1u do l\u01b0\u1ee3ng vi khu\u1ea9n, men bia v\u00e0 vi t\u1ea3o d\u1ed3i d\u00e0o. C\u1ea3 b\u00e3 h\u1eefu c\u01a1 \u0111\u1ed9ng l\u1eabn th\u1ef1c v\u1eadt \u0111\u1ec1u cung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng cho s\u1ef1 t\u0103ng tr\u01b0\u1edfng c\u1ee7a moina.<\/p>\n

    Gia\u0301 tri\u0323 dinh d\u01b0\u01a1\u0303ng c\u1ee7a moina ph\u1ee5 thu\u1ed9c v\u00e0o \u0111\u1ed9 tu\u1ed5i v\u00e0 lo\u1ea1i th\u1ee9c \u0103n m\u00e0 ch\u00fang \u0111\u01b0\u1ee3c nu\u00f4i. L\u01b0\u1ee3ng protein \u1edf moina chi\u1ebfm 50% kh\u1ed1i l\u01b0\u1ee3ng kh\u00f4. Moina tr\u01b0\u1edfng th\u00e0nh ch\u1ee9a nhi\u1ec1u ch\u1ea5t b\u00e9o h\u01a1n moina non. L\u01b0\u1ee3ng ch\u1ea5t b\u00e9o chi\u1ebfm 20 \u2013 27% kh\u1ed1i l\u01b0\u1ee3ng kh\u00f4 \u1edf moina c\u00e1i tr\u01b0\u1edfng th\u00e0nh v\u00e0 4 \u2013 6% \u1edf moina non.<\/p>\n

    \"\"<\/strong><\/p>\n

    Ph\u01b0\u01a1ng th\u1ee9c g\u00e2y nu\u00f4i Moina:<\/strong> trong ao \u0111\u1ea5t (ph\u01b0\u01a1ng th\u1ee9c g\u00e2y nu\u00f4i sinh kh\u1ed1i hi\u1ec7u qu\u1ea3 v\u00e0 kinh t\u1ebf nh\u1ea5t) \u2013 trong b\u1ec3 ciment v\u00e0 tr\u00ean b\u1ea1t l\u00f3t nylon\u2026.<\/p>\n

    Th\u01b0\u0301c \u0103n c\u1ee7a moina g\u1ed3m: c\u00e1c lo\u00e0i vi t\u1ea3o, vi khu\u00e2\u0309n, mu\u0300n ba\u0303 h\u01b0\u0303u c\u01a1 l\u01a1 l\u01b0\u0309ng, men bia v\u00e0 m\u00f9n b\u00e3 h\u1eefu c\u01a1 (th\u1ed1i r\u1eefa).<\/p>\n

    Do \u0111\u00f3, ao khi b\u00f3n ph\u00e2n g\u00e2y m\u00e0u s\u1ebd t\u1ea1o n\u00ean m\u00f4i tr\u01b0\u1eddng c\u00f3 nhi\u1ec1u t\u1ea3o, vi khu\u1ea9n hi\u1ebfu kh\u00ed (l\u00e0 ngu\u1ed3n th\u01b0c \u0103n ch\u00ednh cho moina) t\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i cho moina ph\u00e1t tri\u1ec3n.<\/p>\n

    C\u00f3 nhi\u1ec1u nguy\u00ean li\u1ec7u \u0111\u01b0\u1ee3c d\u00f9ng g\u00e2y m\u00e0u cho vi\u1ec7c nu\u00f4i thu sinh kh\u1ed1i moina: ph\u00e2n chu\u1ed3ng \u2013 ph\u00e2n h\u1eefu \u1ee7 hoai; ph\u00e2n v\u00f4 c\u01a1, men bia men r\u01b0\u1ee3u, b\u1ed9t xay nhuy\u1ec5n t\u1eeb c\u00e1c lo\u1ea1i ng\u0169 c\u1ed1c, d\u1ecbch th\u1ea3i t\u1eeb l\u00f2 gi\u1ebft m\u1ed5 gia s\u00fac \u2013 gia c\u1ea7m\u2026<\/p>\n

      \n
    • NU\u00d4I SINH KH\u1ed0I MOINA TRONG AO \u0110\u1ea4T:<\/strong><\/li>\n
    • Ch\u1ecdn ao 1000m2<\/sup> \u2013 2000m2<\/sup>, \u0111\u1ed9 s\u00e2u m\u1ef1c n\u01b0\u1edbc ao 1 -1.5m, ao \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc c\u1ea3i t\u1ea1o nh\u01b0 nh\u1eefng ao \u01b0\u01a1ng nu\u00f4i c\u00e1 gi\u1ed1ng<\/li>\n
    • C\u1ea5p ngu\u1ed3n n\u01b0\u1edbc s\u1ea1ch v\u00e0o ao qua h\u1ec7 th\u1ed1ng c\u1ed1ng c\u00f3 l\u01b0\u1edbi l\u1ecdc. Sau \u0111\u00f3 ti\u1ebfn h\u00e0nh b\u00f3n ph\u00e2n g\u00e2y m\u00e0u cho ao. M\u00f4i tr\u01b0\u1eddng n\u01b0\u1edbc nu\u00f4i Moina th\u01b0\u1eddng c\u00f3 \u0111\u1ed9 pH 7-8, h\u00e0m l\u01b0\u1ee3ng oxy t\u1eeb 3-3.5mg\/l\u00edt, nhi\u1ec7t \u0111\u1ed9 26-30 \u0111\u1ed9 C, \u0111\u1ed9 c\u1ee9ng tr\u00ean 150-200mg\/lit, NH3:0.2mg\/lit.<\/li>\n
    • D\u00f9ng ph\u00e2n chu\u1ed3ng c\u1ea7n \u0111\u01b0\u1ee3c \u1ee7 k\u1ef9: li\u1ec1u l\u01b0\u1ee3ng 0.4-0.5kg\/m3 hay b\u00f3n chung v\u1edbi ph\u00e2n: li\u1ec1u l\u01b0\u1ee3ng 0.1- 0.3kg\/m3 \u0111\u1ed3ng th\u1eddi k\u1ebft h\u1ee3p b\u00f3n h\u1ed5n h\u1ee3p ngu\u1ed3n th\u1ee9c \u0103n g\u00e2y nu\u00f4i moina.<\/li>\n<\/ul>\n

      C\u00f4ng th\u1ee9c ph\u1ed1i tr\u1ed9n nguy\u00ean li\u1ec7u t\u1ea1o ngu\u1ed3n th\u1ee9c \u0103n cho \u01b0\u01a1ng nu\u00f4i moina (\u0111\u00e3 tri\u1ec3n khai th\u1ef1c ti\u1ec3n)<\/strong><\/p>\n

      1\/ <\/strong>H\u1ed5n h\u1ee3p nguy\u00ean li\u1ec7u ph\u1ed1i tr\u1ed9n<\/strong>:<\/strong> 6 kg b\u1ed9t \u0111\u1eadu n\u00e0nh + 6 kg c\u00e1m g\u1ea1o + 125gr men b\u00e1nh m\u00ec sau \u0111\u00f3 \u0111\u01b0\u1ee3c \u1ee7 sau 12 gi\u1edd v\u00e0 pha lo\u00e3ng n\u01b0\u1edbc s\u1ea1ch t\u01b0\u1edbi kh\u1eafp ao.<\/p>\n

      2\/ <\/strong>S\u1eed d\u1ee5ng th\u1ee9c \u0103n GF 6106 (1mm \u2013 1.5mm 40%P):<\/strong> 5 -10kg + 0.5 – 0.7 kg m\u1eadt r\u1ec9 \u0111\u01b0\u1eddng +1kg men vi sinh pha v\u00e0o 20 l\u00edt n\u01b0\u1edbc s\u1ea1ch v\u00e0 s\u1ee5c kh\u00ed lien t\u1ee5c; sau 12 gi\u1edd t\u01b0\u1edbi h\u1ed5n h\u1ee3p xu\u1ed1ng ao<\/p>\n

      H\u1eb1ng ng\u00e0y, c\u00f3 th\u1ec3 thay t\u1eeb 20-25% l\u01b0\u1ee3ng n\u01b0\u1edbc nu\u00f4i, tr\u00e1nh cho \u0103n qu\u00e1 nhi\u1ec1u s\u1ebd l\u00e0m \u00f4 nhi\u1ec5m n\u01b0\u1edbc v\u00e0 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho vi khu\u1ea9n c\u00f3 h\u1ea1i ph\u00e1t tri\u1ec3n.<\/p>\n

      Quan s\u00e1t ao \u01b0\u01a1ng, n\u1ebfu th\u1ea5y tr\u1ee9ng n\u01b0\u1edbc t\u1eadp trung th\u00e0nh nh\u1eefng qu\u1ea7ng nh\u01b0 \u0111\u00e1m m\u00e2y, c\u00f3 m\u00e0u \u0111\u1ecf, di chuy\u1ec3n tr\u00ean m\u1eb7t n\u01b0\u1edbc v\u00e0o s\u00e1ng s\u1edbm l\u00e0 moina ph\u00e1t tri\u1ec3n v\u1edbi m\u1eadt \u0111\u1ed9 cao v\u00e0 nhi\u1ec1u. N\u1ebfu tr\u1ee9ng n\u01b0\u1edbc ph\u00e1t tri\u1ec3n qu\u00e1 nhi\u1ec1u trong ao \u01b0\u01a1ng c\u00f3 th\u1ec3 l\u00e0m cho ao b\u1ecb thi\u1ebfu oxy v\u1ec1 \u0111\u00eam v\u00e0 c\u00f3 th\u1ec3 g\u00e2y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn sinh kh\u1ed1i trong th\u1eddi gian t\u1edbi.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

      Tr\u01b0\u1edbc khi c\u00e1 gi\u1ed1ng s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c c\u00e1c lo\u1ea1i th\u1ee9c \u0103n c\u00f4ng nghi\u1ec7p th\u00ec ngu\u1ed3n th\u1ee9c \u0103n ch\u1ee7 y\u1ebfu l\u00e0 ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c ngu\u1ed3n phi\u00eau sinh th\u1ef1c. Hi\u1ec7n nay, c\u00f3 3 lo\u1ea1i \u0111\u1ed9ng v\u1eadt phi\u00eau sinh ph\u1ed5 bi\u1ebfn th\u01b0\u1eddng g\u1eb7p trong vi\u1ec7c sinh tr\u01b0\u1edfng giai \u0111o\u1ea1n c\u00e1 b\u1ed9t. Ng\u00e0nh THS GREENFEED VN xin g\u1eedi \u0111\u1ebfn qu\u00fd b\u00e0 con c\u00e1ch thu ho\u1ea1ch c\u00e1c lo\u1ea1i phi\u00eau sinh \u0111\u1ec3 gi\u00fap t\u0103ng t\u1ef7 l\u1ec7 s\u1ed1ng cho giai \u0111o\u1ea1n c\u00e1 b\u1ed9t.<\/p>\n","protected":false},"author":1,"featured_media":2549,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14,1],"tags":[165,145],"class_list":["post-2542","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tu-lieu-ky-thuat","category-tin-tuc-su-kien","tag-ky-thuat-nuoi","tag-thuy-san-viet-nam"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.greenfeed.com.vn\/thuy-san\/wp-json\/wp\/v2\/posts\/2542","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.greenfeed.com.vn\/thuy-san\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.greenfeed.com.vn\/thuy-san\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.greenfeed.com.vn\/thuy-san\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.greenfeed.com.vn\/thuy-san\/wp-json\/wp\/v2\/comments?post=2542"}],"version-history":[{"count":5,"href":"https:\/\/www.greenfeed.com.vn\/thuy-san\/wp-json\/wp\/v2\/posts\/2542\/revisions"}],"predecessor-version":[{"id":2553,"href":"https:\/\/www.greenfeed.com.vn\/thuy-san\/wp-json\/wp\/v2\/posts\/2542\/revisions\/2553"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.greenfeed.com.vn\/thuy-san\/wp-json\/wp\/v2\/media\/2549"}],"wp:attachment":[{"href":"https:\/\/www.greenfeed.com.vn\/thuy-san\/wp-json\/wp\/v2\/media?parent=2542"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.greenfeed.com.vn\/thuy-san\/wp-json\/wp\/v2\/categories?post=2542"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.greenfeed.com.vn\/thuy-san\/wp-json\/wp\/v2\/tags?post=2542"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}