{"id":2108,"date":"2022-03-18T15:58:41","date_gmt":"2022-03-18T15:58:41","guid":{"rendered":"https:\/\/www.greenfeed.com.vn\/thuy-san\/?p=2108"},"modified":"2022-03-21T03:57:44","modified_gmt":"2022-03-21T03:57:44","slug":"cac-giai-phap-nang-cao-suc-khoe-va-ty-le-song-cho-ca-tra-ca-dieu-hong-trong-mua-nang-nong-voi-bo-giai-phap-5-trong-tam-tu-greenfeed","status":"publish","type":"post","link":"https:\/\/www.greenfeed.com.vn\/thuy-san\/cac-giai-phap-nang-cao-suc-khoe-va-ty-le-song-cho-ca-tra-ca-dieu-hong-trong-mua-nang-nong-voi-bo-giai-phap-5-trong-tam-tu-greenfeed\/","title":{"rendered":"C\u00e1c gi\u1ea3i ph\u00e1p n\u00e2ng cao s\u1ee9c kh\u1ecfe v\u00e0 t\u1ef7 l\u1ec7 s\u1ed1ng cho c\u00e1 Tra, c\u00e1 \u0110i\u00eau H\u1ed3ng trong m\u00f9a n\u1eafng n\u00f3ng v\u1edbi b\u1ed9 gi\u1ea3i ph\u00e1p 5 tr\u1ecdng t\u00e2m t\u1eeb GREENFEED"},"content":{"rendered":"

C\u00e1 l\u00e0 lo\u00e0i \u0111\u1ed9ng v\u1eadt m\u00e1u l\u1ea1nh – hay c\u00f2n g\u1ecdi \u0111\u1ed9ng v\u1eadt bi\u1ebfn nhi\u1ec7t – ngh\u0129a l\u00e0 ch\u00fang kh\u00f4ng th\u1ec3 ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 c\u01a1 th\u1ec3 c\u1ee7a m\u00ecnh. Thay v\u00e0o \u0111\u00f3, ch\u00fang d\u1ef1a v\u00e0o nhi\u1ec7t \u0111\u1ed9 c\u1ee7a m\u00f4i tr\u01b0\u1eddng n\u01b0\u1edbc xung quanh \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh ho\u1ea1t \u0111\u1ed9ng trao \u0111\u1ed5i ch\u1ea5t c\u1ee7a ch\u00fang. R\u00f5 r\u00e0ng, ch\u00fang ta kh\u00f4ng th\u1ec3 mong \u0111\u1ee3i nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u01b0u li\u00ean t\u1ee5c, nh\u01b0ng c\u00e1c giai \u0111o\u1ea1n c\u00f3 nhi\u1ec7t \u0111\u1ed9 n\u1eafng n\u00f3ng l\u1ec7ch xa so v\u1edbi m\u1ee9c t\u1ed1i \u01b0u cho s\u1ef1 sinh tr\u01b0\u1edfng s\u1ebd l\u00e0m gi\u1ea3m t\u1ed1c \u0111\u1ed9 t\u0103ng tr\u01b0\u1edfng c\u1ee7a c\u00e1 c\u0169ng nh\u01b0 ph\u00e1t sinh b\u1ec7nh do vi khu\u1ea9n.<\/p>\n

C\u00e1c qu\u00e1 tr\u00ecnh sinh h\u1ecdc c\u1ee7a c\u01a1 th\u1ec3 c\u00e1 s\u1ebd b\u1ecb \u1ea3nh h\u01b0\u1edfng nghi\u00eam tr\u1ecdng khi nhi\u1ec7t \u0111\u1ed9 n\u01b0\u1edbc t\u0103ng cao h\u01a1n nhi\u1ec7t \u0111\u1ed9 th\u00edch h\u1ee3p cho s\u1ef1 ph\u00e1t tri\u1ec3n t\u1ed1i \u01b0u c\u1ee7a c\u00e1. C\u00e1c sinh v\u1eadt trong n\u01b0\u1edbc nh\u01b0 c\u00e1 nu\u00f4i, phi\u00eau sinh \u0111\u1ed9ng, th\u1ef1c v\u00e0 vi khu\u1ea9n c\u1ea7n nhi\u1ec1u oxy h\u01a1n khi nhi\u1ec7t \u0111\u1ed9 n\u01b0\u1edbc t\u0103ng cao cho ho\u1ea1t \u0111\u1ed9ng h\u00f4 h\u1ea5p c\u1ee7a ch\u00fang nh\u01b0ng l\u01b0\u1ee3ng oxy h\u00f2a tan trong n\u01b0\u1edbc l\u00fac n\u00e0y l\u1ea1i th\u1ea5p h\u01a1n. \u0110\u00e2y l\u00e0 l\u00fd do t\u1ea1i sao oxy h\u00f2a tan trong n\u01b0\u1edbc s\u1ee5t gi\u1ea3m v\u00e0 tr\u1edf th\u00e0nh m\u1ed1i \u0111e d\u1ecda l\u1edbn cho s\u1ee9c kh\u1ecfe c\u1ee7a c\u00e1.<\/p>\n

Khi tr\u1eddi qu\u00e1 n\u00f3ng, qu\u00e1 tr\u00ecnh trao \u0111\u1ed5i ch\u1ea5t v\u00e0 h\u00f4 h\u1ea5p c\u1ee7a c\u1ee7a c\u00e1c sinh v\u1eadt trong n\u01b0\u1edbc t\u0103ng t\u1ed1c, \u0111\u1ed3ng th\u1eddi ch\u00fang s\u1eed d\u1ee5ng nhi\u1ec1u oxy h\u01a1n. V\u1ea5n \u0111\u1ec1 l\u00e0, khi n\u01b0\u1edbc \u1ea5m l\u00ean, n\u01b0\u1edbc ch\u1ee9a \u00edt oxy h\u00f2a tan h\u01a1n so v\u1edbi n\u01b0\u1edbc c\u00f3 nhi\u1ec7t \u0111\u1ed9 th\u1ea5p h\u01a1n, \u0111i\u1ec1u n\u00e0y khi\u1ebfn c\u00e1 c\u00e0ng th\u00eam stress.<\/p>\n

\"\"<\/p>\n

\u0110\u1ed9c t\u00ednh c\u1ee7a ammonia gia t\u0103ng khi nhi\u1ec7t \u0111\u1ed9 n\u01b0\u1edbc t\u0103ng cao trong l\u00fac oxy h\u00f2a tan trong n\u01b0\u1edbc gi\u1ea3m l\u00e0m cho c\u00e1 tr\u1edf n\u00ean d\u1ec5 m\u1eafc b\u1ec7nh h\u01a1n v\u00e0 trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p nghi\u00eam tr\u1ecdng, c\u00e1 c\u00f3 th\u1ec3 b\u1ecb t\u1ed5n th\u01b0\u01a1ng n\u1ed9i quan ho\u1eb7c th\u1eadm ch\u00ed h\u00f4 h\u1ea5p b\u1ecb ng\u01b0ng tr\u1ec7. Khi nhi\u1ec7t \u0111\u1ed9 n\u01b0\u1edbc tr\u1edf n\u00ean t\u1ed3i t\u1ec7 h\u01a1n, tr\u00ean 32 \u00b0C, c\u00e1c vi khu\u1ea9n c\u00f3 l\u1ee3i duy tr\u00ec s\u1ef1 c\u00e2n b\u1eb1ng ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc b\u1eaft \u0111\u1ea7u ch\u1ebft d\u1eabn \u0111\u1ebfn s\u1ef1 t\u00edch t\u1ee5 ammonia v\u00e0 nitrite nguy hi\u1ec3m g\u00e2y h\u1ea1i cho c\u00e1. Nhi\u1ec7t \u0111\u1ed9 n\u01b0\u1edbc cao trong m\u00f9a n\u1eafng n\u00f3ng c\u0169ng s\u1ebd gi\u00fap vi khu\u1ea9n Aeromonas hydrophila g\u00e2y b\u1ec7nh xu\u1ea5t huy\u1ebft v\u00e0 Streptococcus agalactiae g\u00e2y b\u1ec7nh l\u1ed3i m\u1eaft, tr\u01b0\u1edbng b\u1ee5ng t\u0103ng cao s\u1ed1 l\u01b0\u1ee3ng trong n\u01b0\u1edbc. C\u00e1 b\u1ecb hao h\u1ee5t nhi\u1ec1u ch\u1ee7 y\u1ebfu do hai b\u1ec7nh n\u00e0y trong m\u00f9a n\u1eafng n\u00f3ng.<\/p>\n

Ng\u01b0\u1eddi nu\u00f4i c\u00e1 ph\u1ea3i c\u00f3 nh\u1eefng gi\u1ea3i ph\u00e1p th\u00edch h\u1ee3p nh\u1eb1m h\u1ea1n ch\u1ebf t\u1ed1i \u0111a \u1ea3nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t \u0111\u1ed9 n\u01b0\u1edbc trong m\u00f9a n\u1eafng n\u00f3ng, \u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng nu\u00f4i nh\u01b0 ao, b\u00e8 ngo\u00e0i tr\u1eddi.<\/p>\n

D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 g\u1ee3i \u00fd cho c\u00e1c gi\u1ea3i ph\u00e1p gi\u00fap c\u00e1 t\u0103ng s\u1ee9c ch\u1ecbu \u0111\u1ef1ng, gi\u1ea3m hao h\u1ee5t trong m\u00f9a n\u1eafng n\u00f3ng.<\/p>\n

1. T\u0103ng c\u01b0\u1eddng oxy h\u00f2a tan trong n\u01b0\u1edbc:<\/strong><\/h2>\n

N\u01b0\u1edbc c\u00f3 nhi\u1ec7t \u0111\u1ed9 cao s\u1ebd c\u00f3 n\u1ed3ng \u0111\u1ed9 oxy h\u00f2a tan th\u1ea5p h\u01a1n n\u01b0\u1edbc c\u00f3 nhi\u1ec7t \u0111\u1ed9 th\u1ea5p. C\u00f9ng l\u00fac n\u00e0y, c\u00e1 ho\u1ea1t \u0111\u1ed9ng nhi\u1ec1u h\u01a1n v\u00e0 ti\u00eau th\u1ee5 nhi\u1ec1u oxy h\u01a1n khi nhi\u1ec7t \u0111\u1ed9 n\u01b0\u1edbc t\u0103ng cao. Trong tr\u01b0\u1eddng h\u1ee3p nh\u01b0 v\u1eady, c\u00e1 c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 b\u1ecb thi\u1ebfu oxy n\u1ebfu ch\u00fang ta kh\u00f4ng c\u00f3 gi\u1ea3i ph\u00e1p g\u00ec c\u1ea3. M\u1ed9t gi\u1ea3i ph\u00e1p hi\u1ec7u qu\u1ea3 nh\u1ea5t l\u00e0 s\u1ee5c kh\u00ed n\u01b0\u1edbc hay qu\u1ea1t n\u01b0\u1edbc (\u0111\u1ea1p n\u01b0\u1edbc). C\u00e1ch n\u00e0y kh\u00f4ng nh\u1eefng gi\u00fap t\u0103ng oxy trong n\u01b0\u1edbc m\u00e0 c\u00f2n gi\u00fap nhi\u1ec7t \u0111\u1ed9 n\u01b0\u1edbc \u1ed5n \u0111\u1ecbnh h\u01a1n. N\u1ebfu kh\u00f4ng s\u1ee5c kh\u00ed v\u00e0 qu\u1ea1t n\u01b0\u1edbc gi\u1eefa tr\u01b0a n\u1eafng n\u00f3ng, nh\u1eefng ng\u00e0y c\u00f3 con n\u01b0\u1edbc k\u00e9m, nh\u1eefng l\u00fac n\u01b0\u1edbc \u0111\u1ee9ng ch\u1eafc ch\u1eafn c\u00e1 s\u1ebd b\u1ecb \u1ea3nh h\u01b0\u1edfng v\u00e0 d\u1eabn \u0111\u1ebfn nhi\u1ec1u h\u1ec7 qu\u1ea3 x\u1ea5u trong th\u1eddi gian ng\u1eafn sau \u0111\u00f3. N\u1ed3ng \u0111\u1ed9 oxy h\u00f2a tan trong n\u01b0\u1edbc \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n cho ph\u00e9p c\u00e1 duy tr\u00ec \u0111\u01b0\u1ee3c t\u00ecnh tr\u1ea1ng s\u1ee9c kh\u1ecfe t\u1ed1t trong \u0111i\u1ec1u ki\u1ec7n n\u1eafng n\u00f3ng.<\/p>\n

L\u00e0m c\u00e1ch n\u00e0o c\u00f3 th\u1ec3 bi\u1ebft \u0111\u01b0\u1ee3c c\u00e1 \u0111ang thi\u1ebfu oxy ? H\u00e3y quan s\u00e1t ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1 nh\u01b0 t\u1eadp trung nhi\u1ec1u \u1edf m\u1eb7t n\u01b0\u1edbc h\u1edbp b\u00f3ng kh\u00ed li\u00ean t\u1ee5c hay t\u1eadp trung nhi\u1ec1u v\u00e0o n\u01a1i n\u01b0\u1edbc c\u1ea5p v\u00e0o ao.<\/p>\n

\"\"<\/p>\n

2. \u0110i\u1ec1u ch\u1ec9nh gi\u1ea3m l\u01b0\u1ee3ng th\u1ee9c \u0103n cho c\u00e1 \u0103n:<\/strong><\/h2>\n

Khi nhi\u1ec7t \u0111\u1ed9 n\u01b0\u1edbc t\u0103ng cao h\u01a1n, c\u00e1 s\u1ebd b\u1eaft m\u1ed3i nhi\u1ec1u h\u01a1n. L\u01b0\u1ee3ng th\u1ee9c \u0103n c\u00e1 \u0103n \u1edf 32 \u00b0C s\u1ebd cao h\u01a1n khi \u1edf 30 \u00b0C. Tuy nhi\u00ean kh\u00f4ng v\u00ec \u0111\u1eb7c t\u00ednh n\u00e0y m\u00e0 cho c\u00e1 \u0103n nhi\u1ec1u h\u01a1n khi tr\u1eddi n\u1eafng n\u00f3ng. N\u00ean l\u1ea5y m\u1ee9c th\u1ee9c \u0103n c\u00e1 \u0103n \u1edf nhi\u1ec7t \u0111\u1ed9 n\u01b0\u1edbc 30 \u00b0C l\u00e0m chu\u1ea9n \u0111\u1ec3 cho c\u00e1 \u0103n khi nhi\u1ec7t \u0111\u1ed9 n\u01b0\u1edbc \u1edf 32 \u00b0C. Cho c\u00e1 \u0103n t\u1eeb t\u1eeb theo t\u1ed1c \u0111\u1ed9 b\u1eaft m\u1ed3i c\u1ee7a c\u00e1. Kh\u00f4ng n\u00ean cho c\u00e1 trong b\u00e8 \u0103n l\u00fac n\u01b0\u1edbc \u0111\u1ee9ng v\u00ec l\u00fac n\u00e0y oxy h\u00f2a tan trong n\u01b0\u1edbc th\u1ea5p h\u01a1n khi n\u01b0\u1edbc ch\u1ea3y. T\u1ed1t nh\u1ea5t n\u00ean cho c\u00e1 \u0103n l\u00fac m\u1ef1c th\u1ee7y tri\u1ec1u s\u1eafp l\u00ean \u0111\u1ebfn \u0111\u1ec9nh ho\u1eb7c b\u1eaft \u0111\u1ea7u r\u00fat. Nh\u00ecn chung, ch\u1ec9 n\u00ean cho \u0103n kho\u1ea3ng t\u1eeb 80 \u2013 90 % l\u01b0\u1ee3ng th\u1ee9c \u0103n c\u00e1 c\u00f3 th\u1ec3 b\u1eaft m\u1ed3i. Khi m\u1ee9c \u0111\u1ed9 c\u00e1 t\u1eadp trung b\u1eaft m\u1ed3i ng\u01a1i \u0111i, kh\u00f4ng n\u00ean r\u1ea3i ti\u1ebfp th\u1ee9c \u0103n.<\/p>\n

3. San th\u01b0a c\u00e1, gi\u1ea3m m\u1eadt \u0111\u1ed9:<\/strong><\/h2>\n

Trong giai \u0111o\u1ea1n cao \u0111i\u1ec3m c\u1ee7a m\u00f9a n\u1eafng n\u00f3ng (th\u00e1ng 4 v\u00e0 5) n\u00ean c\u00f3 k\u1ebf ho\u1ea1ch san th\u01b0a c\u00e1. C\u00e1ch suy ngh\u0129 c\u1ee9 th\u1ea3 c\u00e1 m\u1eadt \u0111\u1ed9 d\u00e0y ban \u0111\u1ea7u, sau \u0111\u00f3 c\u00e1 hao h\u1ee5t d\u1ea7n \u0111\u1ec3 c\u00f2n \u0111\u01b0\u1ee3c m\u1eadt \u0111\u1ed9 nu\u00f4i mong mu\u1ed1n kh\u00e1 ph\u1ed5 bi\u1ebfn trong ng\u01b0\u1eddi nu\u00f4i c\u00e1 Tra v\u00e0 \u0110i\u00eau H\u1ed3ng. Vi\u1ec7c th\u1ea3 d\u00e0y s\u1ebd l\u00e0m t\u0103ng m\u1ee9c \u0111\u1ed9 ti\u00eau th\u1ee5 oxy trong n\u01b0\u1edbc, \u0111i\u1ec1u n\u00e0y s\u1ebd l\u00e0m gi\u1ea3m n\u1ed3ng \u0111\u1ed9 oxy h\u00f2a tan. Ngo\u00e0i ra th\u1ea3 c\u00e1 m\u1eadt \u0111\u1ed9 d\u00e0y c\u0169ng s\u1ebd l\u00e0m t\u0103ng l\u01b0\u1ee3ng ch\u1ea5t th\u1ea3i. Hai y\u1ebfu t\u1ed1 n\u00e0y s\u1ebd l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng x\u1eed l\u00fd sinh h\u1ecdc c\u1ee7a ch\u00ednh h\u1ec7 th\u1ed1ng nu\u00f4i.<\/p>\n

4. D\u1ecdn s\u1ea1ch ch\u1ea5t th\u1ea3i trong ao, b\u00e8:<\/strong><\/h2>\n

Th\u1ee9c \u0103n d\u01b0 th\u1eeba, x\u00e1c c\u00e1 ch\u1ebft, b\u00f9n \u0111\u00e1y t\u00edch t\u1ee5 \u1edf \u0111\u00e1y ao ho\u00e0n to\u00e0n kh\u00f4ng t\u1ed1t cho ao v\u00e0 b\u00e8 nu\u00f4i. \u0110i\u1ec1u n\u00e0y c\u00e0ng \u0111\u1eb7c bi\u1ec7t \u0111\u00fang trong m\u00f9a n\u1eafng n\u00f3ng. C\u00e1c th\u00e0nh ph\u1ea7n c\u00f3 h\u1ea1i n\u00e0y s\u1ebd b\u1ecb ph\u00e2n h\u1ee7y t\u1ea1o kh\u00ed \u0111\u1ed9c ammonia v\u00e0 l\u00e0m gi\u1ea3m oxy h\u00f2a tan trong n\u01b0\u1edbc. H\u00e0m l\u01b0\u1ee3ng ammonia qu\u00e1 cao trong n\u01b0\u1edbc s\u1ebd g\u00e2y \u0111\u1ed9c cho c\u00e1. Trong m\u00f9a n\u1eafng n\u00f3ng c\u00e1 \u0111\u00e3 b\u1ecb stress do nhi\u1ec7t \u0111\u1ed9 cao, oxy h\u00f2a tan gi\u1ea3m th\u1ea5p, vi\u1ec7c c\u00e1 l\u1ea1i ph\u1ea3i ch\u1ecbu th\u00eam n\u1ed3ng \u0111\u1ed9 ammonia cao trong n\u01b0\u1edbc ch\u1ec9 l\u00e0m t\u00ecnh tr\u1ea1ng ao nu\u00f4i t\u1ed3i t\u1ec7 h\u01a1n.<\/p>\n

5. N\u00e2ng cao m\u1ef1c n\u01b0\u1edbc trong ao:<\/strong><\/h2>\n

V\u00e0o m\u00f9a n\u1eafng n\u00f3ng, m\u1ef1c n\u01b0\u1edbc trong ao n\u00ean \u0111\u01b0\u1ee3c n\u00e2ng cao \u0111\u1ebfn m\u1ee9c c\u00f3 th\u1ec3. M\u1ef1c n\u01b0\u1edbc ao s\u00e2u s\u1ebd gi\u00fap n\u01b0\u1edbc trong ao c\u00f3 nhi\u1ec7t \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh, m\u00e1t h\u01a1n h\u01a1n so v\u1edbi m\u1ef1c n\u01b0\u1edbc c\u1ea1n h\u01a1n. M\u1ef1c n\u01b0\u1edbc s\u00e2u c\u0169ng gi\u00fap c\u00e1 c\u00f3 nhi\u1ec1u kho\u1ea3ng c\u00e1ch h\u01a1n \u0111\u1ec3 b\u01a1i l\u1ed9i, ph\u00e1t tri\u1ec3n d\u00e0y v\u00e0 s\u0103n ch\u1eafc h\u01a1n l\u01b0\u1eddn fillet hai b\u00ean th\u00e2n, gi\u1ea3m \u0111\u01b0\u1ee3c t\u1ef7 l\u1ec7 m\u1ee1 b\u1ee5ng trong c\u01a1 th\u1ec3. N\u00ean thay 20 \u2013 25 % n\u01b0\u1edbc trong ao v\u00e0o nh\u1eefng ng\u00e0y n\u00f3ng b\u1ee9c.<\/p>\n

6. T\u1ea1o b\u00f3ng r\u00e2m cho c\u00e1:<\/strong><\/h2>\n

C\u00e1 trong ao hay b\u00e8 s\u1ebd kh\u00f4ng b\u1ecb ch\u00e1y n\u1eafng nh\u01b0 v\u1eadt nu\u00f4i tr\u00ean c\u1ea1n. Tuy nhi\u00ean, ch\u00fang c\u0169ng s\u1ebd b\u1ecb n\u00f3ng d\u01b0\u1edbi \u00e1nh s\u00e1ng ch\u00f3i chan c\u1ee7a m\u1eb7t tr\u1eddi. C\u00e1 Tra, \u0110i\u00eau H\u1ed3ng c\u00f3 th\u1ec3 th\u1ec3 s\u1ed1ng \u1edf nhi\u1ec7t \u0111\u1ed9 32 \u2013 34 \u00b0C nh\u01b0ng \u0111i\u1ec1u n\u00e0y kh\u00f4ng c\u00f3 ngh\u0129a ch\u00fang s\u1ebd ph\u00e1t tri\u1ec3n t\u1ed1t trong \u0111i\u1ec1u ki\u1ec7n nh\u01b0 v\u1eady. H\u00e3y che m\u00e1t b\u1eb1ng l\u01b0\u1edbi lan cho c\u00e1 \u0110i\u00eau \u1ed3ng trong b\u00e8, \u0110\u1ed1i v\u1edbi ao nu\u00f4i, \u00edt nh\u1ea5t c\u1ea7n che m\u00e1t gi\u00e8o c\u00e1 trong ao.<\/p>\n

\u0110\u1ed1i v\u1edbi ao, b\u00e8 kh\u00f4ng \u0111\u01b0\u1ee3c che m\u00e1t, \u00e1nh n\u1eafng tr\u1ef1c ti\u1ebfp v\u00e0o ban ng\u00e0y c\u00f3 th\u1ec3 l\u00e0m nhi\u1ec7t \u0111\u1ed9 t\u0103ng cao h\u01a1n, v\u00e0 m\u1ea5t nhi\u1ec7t v\u00e0o nh\u1eefng \u0111\u00eam tr\u1eddi quang c\u00f3 th\u1ec3 khi\u1ebfn nhi\u1ec7t \u0111\u1ed9 gi\u1ea3m xu\u1ed1ng th\u1ea5p h\u01a1n so v\u1edbi ao c\u00f3 b\u00f3ng r\u00e2m. B\u1ea7u tr\u1eddi \u0111\u00eam quang \u0111\u1ea3ng c\u00f3 th\u1ec3 h\u1ea5p th\u1ee5 m\u1ed9t l\u01b0\u1ee3ng l\u1edbn nhi\u1ec7t t\u1eeb m\u1ed9t ao nh\u1ecf v\u00e0 th\u1ef1c s\u1ef1 khi\u1ebfn nhi\u1ec7t \u0111\u1ed9 ao th\u1ea5p h\u01a1n nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng kh\u00ed. \u0110i\u1ec1u n\u00e0y l\u00e0m cho ao, b\u00e8 kh\u00f4ng \u0111\u01b0\u1ee3c che m\u00e1t c\u00f3 nhi\u1ec7t \u0111\u1ed9 ch\u00eanh l\u1ec7ch gi\u1eefa ng\u00e0y v\u00e0 \u0111\u00eam cao h\u01a1n.<\/p>\n

7. T\u0103ng c\u01b0\u1eddng d\u01b0\u1ee1ng ch\u1ea5t ch\u1ed1ng ch\u1ecbu stress:<\/strong><\/h2>\n

Trong th\u1eddi gian n\u1eafng n\u00f3ng, c\u00e1 ph\u1ea3i ch\u1ecbu r\u1ea5t nhi\u1ec1u y\u1ebfu t\u1ed1 g\u00e2y stress. V\u00ec v\u1eady, h\u00e3y b\u1ed5 sung v\u00e0o th\u1ee9c \u0103n k\u1ebdm h\u1eefu c\u01a1 hay k\u1ebdm acetate \u1edf m\u1ee9c 5 \u2013 10 mg\/kh th\u1ee9c \u0103n v\u00e0 vitamin C li\u1ec1u 50 mg\/kg th\u1ee9c \u0103n. K\u1ebdm v\u00e0 viatamin C c\u00f2n gi\u00fap c\u00e1c v\u1ebft th\u01b0\u01a1ng tr\u00ean da mau l\u00e0nh, gi\u1ea3m hao h\u1ee5t sau khi v\u1eadn chuy\u1ec3n, chuy\u1ec3n ao, b\u00e8 hay ph\u00e2n c\u1ee1 c\u00e1.<\/p>\n

8. Ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc:<\/strong><\/h2>\n

N\u1ebfu th\u1ea5y c\u00e1 c\u00f3 ho\u1ea1t \u0111\u1ed9ng b\u01a1i theo c\u00e1ch b\u1ea5t th\u01b0\u1eddng, b\u01a1i ch\u1eadm ch\u1ea1p, h\u00e3y ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc. \u0110\u01a1n gi\u1ea3n nh\u1ea5t l\u00e0 \u0111o nhi\u1ec7t \u0111\u1ed9 n\u01b0\u1edbc m\u1eb7t b\u1eb1ng nhi\u1ec7t k\u1ebf, ammonia, nitrite v\u00e0 oxy h\u00f2a tan b\u1eb1ng c\u00e1c k\u00edt h\u00f3a h\u1ecdc. Vi\u1ec7c n\u00e0y ch\u1ec9 m\u1ea5t v\u00e0i ph\u00fat v\u00e0 m\u1ed9t \u00edt ph\u00ed t\u1ed5n. H\u00e3y \u0111\u1eebng e ng\u1ea1i khi g\u1ecdi k\u1ef9 s\u01b0 c\u1ee7a c\u00f4ng ty ch\u00fang t\u00f4i h\u01b0\u1edbng d\u1eabn c\u00e1ch \u0111o v\u00e0 nh\u1eadn \u0111\u1ecbnh k\u1ebf qu\u1ea3 c\u0169ng nh\u01b0 \u0111\u01b0a ra gi\u1ea3i ph\u00e1p c\u1ee5 th\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

M\u00f9a n\u1eafng n\u00f3ng \u1edf \u0110\u1ed3ng B\u1eb1ng s\u00f4ng C\u1eedu Long v\u00e0 khu v\u1ef1c \u0110\u00f4ng Nam B\u1ed9 b\u1eaft \u0111\u1ea7u t\u1eeb \u0111\u1ea7u th\u00e1ng 3 v\u00e0 k\u00e9o d\u00e0i cho \u0111\u1ebfn h\u1ebft th\u00e1ng 6. Nhi\u1ec7t \u0111\u1ed9 ngo\u00e0i tr\u1eddi c\u00f3 th\u1ec3 l\u00ean \u0111\u1ebfn 38 \u2013 40 oC, nhi\u1ec7t \u0111\u1ed9 n\u01b0\u1edbc m\u1eb7t trong ao v\u00e0 tr\u00ean s\u00f4ng c\u0169ng c\u00f3 th\u1ec3 l\u00ean tr\u00ean 32 oC. C\u00e1 trong kho\u1ea3ng th\u1eddi gian n\u00e0y th\u01b0\u1eddng b\u1ecb stress do nhi\u1ec7t \u0111\u1ed9 n\u01b0\u1edbc cao.<\/p>\n","protected":false},"author":1,"featured_media":2110,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[145],"class_list":["post-2108","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tu-lieu-ky-thuat","tag-thuy-san-viet-nam"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.greenfeed.com.vn\/thuy-san\/wp-json\/wp\/v2\/posts\/2108","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=2108"}],"version-history":[{"count":4,"href":"https:\/\/www.greenfeed.com.vn\/thuy-san\/wp-json\/wp\/v2\/posts\/2108\/revisions"}],"predecessor-version":[{"id":2121,"href":"https:\/\/www.greenfeed.com.vn\/thuy-san\/wp-json\/wp\/v2\/posts\/2108\/revisions\/2121"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.greenfeed.com.vn\/thuy-san\/wp-json\/wp\/v2\/media\/2110"}],"wp:attachment":[{"href":"https:\/\/www.greenfeed.com.vn\/thuy-san\/wp-json\/wp\/v2\/media?parent=2108"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.greenfeed.com.vn\/thuy-san\/wp-json\/wp\/v2\/categories?post=2108"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.greenfeed.com.vn\/thuy-san\/wp-json\/wp\/v2\/tags?post=2108"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}