{"id":119,"date":"2018-05-05T01:41:37","date_gmt":"2018-05-05T01:41:37","guid":{"rendered":"https:\/\/icolor.com.vn\/lachongs\/?p=119"},"modified":"2018-05-05T01:41:37","modified_gmt":"2018-05-05T01:41:37","slug":"su-dung-nguyen-lieu-phu-gia-trong-thuc-an-chan-nuoi","status":"publish","type":"post","link":"https:\/\/icolor.com.vn\/lachongs\/su-dung-nguyen-lieu-phu-gia-trong-thuc-an-chan-nuoi\/","title":{"rendered":"S\u1eed d\u1ee5ng nguy\u00ean li\u1ec7u ph\u1ee5 gia trong th\u1ee9c \u0103n ch\u0103n nu\u00f4i"},"content":{"rendered":"

1. C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng-vai tr\u00f2 c\u1ee7a acid h\u1eefu c\u01a1<\/strong><\/p>\n

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C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a acid h\u1eefu c\u01a1 v\u00e0 mu\u1ed1i c\u1ee7a ch\u00fang<\/strong><\/p>\n<\/td>\n<\/tr>\n

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M\u1ee5c ti\u00eau<\/strong><\/p>\n<\/td>\n

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Lo\u1ea1i acid v\u00e0 c\u00e1c d\u1ea1ng mu\u1ed1i<\/strong><\/p>\n<\/td>\n

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C\u01a1 ch\u1ebf t\u00e1c \u0111\u1ed9ng<\/strong><\/p>\n<\/td>\n<\/tr>\n

Trong th\u1ee9c \u0103n<\/td>\nAcid propionic; acid formic, acid sorbic<\/td>\nGi\u1ea3m pHCh\u1ed1ng m\u1ed1c, ch\u1ed1ng n\u1ea5m, ch\u1ed1ng vi khu\u1ea9n<\/td>\n<\/tr>\n
Trong \u0111\u01b0\u1eddng ti\u00eau h\u00f3a<\/td>\nAcid Formic, acid Lactic, Benzoic<\/td>\n<\/td>\n<\/tr>\n
<\/td>\nPh\u00e2n ly th\u00e0nh Proton<\/td>\nGi\u1ea3m pH d\u1ea1 d\u00e0yT\u0103ng hi\u1ec7u qu\u1ea3 c\u1ee7a enzyme Pepsin (pH t\u1ed1i \u01b0u t\u1eeb 2.5 t\u1edbi 3.5) nh\u1eb1m t\u0103ng kh\u1ea3 n\u0103ng ti\u00eau h\u00f3a Protein<\/p>\n

Kh\u00e1ng khu\u1ea9n<\/td>\n<\/tr>\n

Ph\u00e2n ly th\u00e0nh c\u00e1c Anion<\/td>\nKh\u00e1ng khu\u1ea9nK\u1ebft h\u1ee3p v\u1edbi c\u00e1c ion kho\u00e1ng nh\u01b0 Ca, Mg, Fe \u0111\u1ec3 t\u0103ng kh\u1ea3 n\u0103ng h\u1ea5p thu c\u00e1c kho\u00e1ng n\u00e0y<\/td>\n<\/tr>\n
S\u1ef1 chuy\u1ec3n h\u00f3a trung gian<\/td>\nAcid Butyric, acid Formic<\/td>\nL\u00e0 ngu\u1ed3n cung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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Co\u031b che\u0302\u0301 die\u0323\u0302t khua\u0302\u0309n cu\u0309a acid hu\u031b\u0303u co\u031b (Nguo\u0302\u0300n Exotic)<\/em><\/p>\n

Acid h\u1eefu c\u01a1 \u0111\u01b0\u1ee3c ph\u00e2n chia ra nhi\u1ec1u nh\u00f3m nh\u1ecf d\u1ef1a v\u00e0o c\u00f4ng d\u1ee5ng c\u1ee7a ch\u00fang<\/em><\/strong><\/u><\/p>\n

Nh\u00f3m \u0111\u1ea7u ti\u00ean c\u00f3 t\u00e1c d\u1ee5ng l\u00e0m s\u1ea1ch nh\u01b0 ch\u1ed1ng m\u1ed1c, n\u1ea5m v\u00e0 c\u1ea7u khu\u1ea9n. Trong \u0111\u00f3 acid propionic c\u00f3 t\u00e1c d\u1ee5ng ch\u1ed1ng m\u1ed1c v\u00e0 acid sorbic th\u00ec ch\u1ed1ng n\u1ea5m.<\/p>\n

Nh\u00f3m th\u1ee9 2 c\u00f3 t\u00e1c d\u1ee5ng c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 s\u1eed d\u1ee5ng th\u1ee9c \u0103n b\u1edfi l\u00e0m gi\u1ea3m pH trong d\u1ea1 d\u00e0y. Acid fumaric, formic v\u00e0 lactic l\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 gi\u1ea3m pH d\u1ea1 d\u00e0y. Ho\u1ea1t \u0111\u1ed9ng ch\u00ednh c\u1ee7a acid h\u1eefu c\u01a1 l\u00e0 l\u00e0m gi\u1ea3m pH d\u1ea1 d\u00e0y \u0111\u1ec3 k\u00edch ho\u1ea1t enzyme pepsin nh\u1eb1m ti\u00eau h\u00f3a t\u1ed1t Protein. B\u00ean c\u1ea1nh \u0111\u00f3 acid h\u1eefu c\u01a1 c\u0169ng c\u00f3 t\u00e1c \u0111\u1ed9ng v\u1eeba ng\u0103n ng\u1eeba s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a vi khu\u1ea9n c\u00f3 h\u1ea1i v\u1eeba ti\u00eau di\u1ec7t ch\u00fang. V\u00ed d\u1ee5 Acid lactic \u0111\u01b0\u1ee3c cho l\u00e0 gi\u1ea3m pH d\u1ea1 d\u00e0y v\u00e0 ng\u0103n ng\u1eeba s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a E.coli. S\u1ef1 d\u01b0 th\u1eeba kho\u00e1ng ch\u1ea5t v\u00e0 Nito c\u0169ng \u0111\u01b0\u1ee3c gi\u1ea3i quy\u1ebft b\u1edfi acid h\u1eefu c\u01a1 khi m\u00e0 ch\u00fang c\u00f3 kh\u1ea3 n\u0103ng g\u1eafn k\u1ebft v\u1edbi c\u00e1c ch\u1ea5t n\u00e0y v\u00e0 l\u00e0m ch\u00fang tr\u1edf n\u00ean d\u1ec5 h\u1ea5p thu h\u01a1n.<\/p>\n

Nh\u00f3m cu\u1ed1i c\u00f9ng l\u00e0 nh\u00f3m tr\u1ef1c ti\u1ebfp ti\u00eau di\u1ec7t vi khu\u1ea9n. Acid formic, Benzoic, Butyric, Aetic, Propionic v\u00e0 Sorbic v\u00e0 c\u00e1c acid b\u00e9o m\u1ea1ch trung b\u00ecnh \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh l\u00e0 ti\u00eau di\u1ec7t \u0111\u01b0\u1ee3c c\u00e1c y\u1ebfu t\u1ed1 g\u00e2y b\u1ec7nh hi\u1ec7u qu\u1ea3, nh\u00f3m n\u00e0y l\u00e0 \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng trong vi\u1ec7c gi\u1ea3m s\u1eed d\u1ee5ng kh\u00e1ng sinh trong th\u1ee9c \u0103n ch\u0103n nu\u00f4i. C\u00e1c lo\u1ea1i acid h\u1eefu c\u01a1 m\u1ea1nh ng\u1eafn nh\u01b0 acid acetic, propionic v\u00e0 butyric l\u00e0m t\u0103ng s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e1c t\u1ebf b\u00e0o bi\u1ec3u m\u00f4 v\u00e0 k\u00edch th\u00edch s\u1ef1 ti\u1ebft ra c\u1ee7a enzyme tuy\u1ebfn t\u1ee5y trong heo. Acid h\u1eefu c\u01a1 v\u00e0 mu\u1ed1i c\u1ee7a ch\u00fang l\u00e0m t\u0103ng kh\u1ea3 n\u0103ng ti\u00eau h\u00f3a c\u1ee7a \u0111\u01b0\u1eddng ti\u00eau h\u00f3a v\u00e0 c\u1ea3i thi\u1ec7n n\u0103ng xu\u1ea5t, t\u0103ng kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng protein \u0111\u1eb7c bi\u1ec7t l\u00e0 tr\u00ean heo con.<\/p>\n

Acid h\u1eefu c\u01a1 nguy\u00ean ch\u1ea5t c\u00f3 t\u00ednh ch\u1ea5t \u0103n m\u00f2n do \u0111\u00f3 khi s\u1eed d\u1ee5ng th\u00ec th\u01b0\u1eddng d\u00f9ng d\u1ea1ng mu\u1ed1i c\u1ee7a n\u00f3 nh\u01b0 mu\u1ed1i Canxi hay Natri. Nh\u01b0ng c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a acid h\u1eefu c\u01a1 l\u1ea1i d\u1ef1a v\u00e0o vi\u1ec7c gi\u1ea3i ph\u00f3ng c\u00e1c ion H+<\/sup>\u00a0t\u1ef1 do m\u00e0 d\u1ea1ng mu\u1ed1i c\u1ee7a ch\u00fang th\u00ec kh\u00f4ng th\u1ec3 gi\u1ea3i ph\u00f3ng ra ion H+<\/sup>\u00a0t\u1ef1 do n\u00e0y, do \u0111\u00f3 d\u1ea1ng mu\u1ed1i ch\u1ec9 c\u00f3 t\u00e1c d\u1ee5ng \u0111\u1ed1i v\u1edbi h\u1ec7 \u0111\u1ec7m c\u1ee7a th\u1ee9c \u0103n, ch\u1ec9 khi n\u00e0o d\u1ea1ng mu\u1ed1i n\u00e0y g\u0103p \u0111\u01b0\u1ee3c m\u00f4i tr\u01b0\u1eddng c\u00f3 acid m\u1ea1nh h\u01a1n, v\u00ed d\u1ee5 nh\u01b0 trong d\u1ea1 d\u00e0y c\u00f3 acid HCL th\u00ec m\u1edbi chuy\u1ec3n h\u00f3a th\u00e0nh d\u1ea1ng acid v\u00e0 t\u1eeb \u0111\u00f3 m\u1edbi c\u00f3 hi\u1ec7u qu\u1ea3 nh\u01b0 m\u1ed9t ch\u1ea5t acid h\u00f3a.<\/p>\n

Gi\u00e1 tr\u1ecb ph\u00e2n ly pKa c\u1ee7a acid s\u1ebd x\u00e1c \u0111\u1ecbnh \u0111\u00f3 l\u00e0 acid c\u00f3 t\u00e1c d\u1ee5ng l\u00e0m gi\u1ea3m pH hay acid di\u1ec7t vi khu\u1ea9n, trong t\u1eebng \u0111i\u1ec1u ki\u1ec7n pH c\u1ee7a m\u00f4i tr\u01b0\u1eddng. N\u1ebfu pH m\u00f4i tr\u01b0\u1eddng m\u00e0 l\u1edbn h\u01a1n pKa th\u00ec acid \u0111\u00f3 s\u1ebd b\u1ecb ph\u00e2n ly v\u00e0 gi\u1ea3i ph\u00f3ng ion H+\u00a0<\/sup>\u00a0nh\u00f3m n\u00e0y l\u00e0 nh\u00f3m acid l\u00e0m gi\u1ea3m pH. N\u1ebfu pKa c\u1ee7a 1 acid m\u00e0 l\u1edbn h\u01a1n pH m\u00f4i tr\u01b0\u1eddng th\u00ec acid n\u00e0y s\u1ebd kh\u00f4ng ph\u00e2n ly v\u00e0 s\u1ebd ti\u1ebfp c\u1eadn vi khu\u1ea9n \u0111\u1ec3 ti\u00eau di\u1ec7t v\u00ec th\u00e0nh t\u1ebf b\u00e0o vi khu\u1ea9n mang \u0111i\u1ec7n t\u00edch \u00e2m v\u00e0 c\u1ea5u tr\u00fac kh\u00f4ng ph\u00e2n ly c\u1ee7a acid s\u1ebd chui qua \u0111\u01b0\u1ee3c m\u00e0ng t\u1ebf\u00a0 b\u00e0o, nh\u1ea5t l\u00e0 \u0111\u1ed1i v\u1edbi c\u00e1c acid c\u00f3 c\u1ea5u tr\u00fac ph\u00e2n t\u1eed nh\u1ecf \u0111\u01a1n gi\u1ea3n nh\u01b0 acid formic n\u1ebfu nh\u01b0 acid n\u00e0y kh\u00f4ng b\u1ecb ph\u00e2n ly. Nh\u01b0 v\u1eady acid h\u1eefu c\u01a1 c\u00f3 pKa c\u00e0ng cao (Propionic, Butyric, Acetic acid) th\u00ec l\u00e0 lo\u1ea1i di\u1ec7t vi khu\u1ea9n t\u1ed1t. pKa th\u1ea5p h\u01a1n (Formic , lactic acid) th\u00ec l\u00e0 lo\u1ea1i d\u00f9ng l\u00e0m gi\u1ea3m pH d\u1ea1 d\u00e0y.<\/p>\n

B\u00ecnh th\u01b0\u1eddng ch\u00fang ta mu\u1ed1n acid h\u1eefu c\u01a1 s\u1ebd ho\u1ea1t \u0111\u1ed9ng trong ru\u1ed9t non, nh\u01b0 v\u1eady n\u00f3 c\u1ea7n ph\u1ea3i \u0111\u01b0\u1ee3c b\u1ea3o to\u00e0n khi qua d\u1ea1 d\u00e0y v\u00ec d\u1ea1 d\u00e0y c\u00f3 pH r\u1ea5t th\u1ea5p kho\u1ea3ng 2, v\u1edbi nh\u1eefng con non th\u00ec pH d\u1ea1 d\u00e0y c\u00f3 cao h\u01a1n l\u00e0 4 do \u0111\u00f3 c\u1ea7n ph\u1ea3i hi\u1ec3u r\u00f5 c\u01a1 ch\u1ebf \u0111\u1ec3 s\u1eed d\u1ee5ng acid h\u1eefu c\u01a1 \u0111\u00fang lo\u1ea1i cho \u0111\u00fang m\u1ee5c \u0111\u00edch. V\u00ed d\u1ee5, v\u1edbi acid lactic (pKa 3.86) th\u00ec s\u1ebd c\u00f2n nguy\u00ean v\u1eb9n khi \u0111i qua d\u1ea1 d\u00e0y v\u1edbi pH 2, nh\u01b0ng v\u1edbi con non th\u00ec pH d\u1ea1 d\u00e0y l\u00e0 4 th\u00ec acid lactic s\u1ebd b\u1ecb ph\u00e2n ly \u1edf d\u1ea1 d\u00e0y v\u00e0 do \u0111\u00f3 c\u00f3 t\u00e1c d\u1ee5ng gi\u1ea3m pH d\u1ea1 d\u00e0y m\u00e0 kh\u00f4ng c\u00f2n t\u00e1c d\u1ee5ng di\u1ec7t khu\u1ea9n \u1edf ru\u1ed9t non n\u1eefa. V\u1edbi acid acetic (pKa 4.75) th\u00ec m\u1eb7c d\u00f9 c\u1ea3 con non l\u1eabn con tr\u01b0\u1edfng th\u00e0nh th\u00ec pH d\u1ea1 d\u00e0y \u0111\u1ec1u th\u1ea5p h\u01a1n pKa c\u1ee7a acid n\u00e0y n\u00ean acid n\u00e0y kh\u00f4ng c\u00f3 t\u00e1c d\u1ee5ng l\u00e0m gi\u1ea3m pH d\u1ea1 d\u00e0y \u0111\u01b0\u1ee3c n\u1eefa.<\/p>\n

Do \u0111\u00f3 gi\u00e1 tr\u1ecb c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng acid h\u1eefu c\u01a1 l\u00e0 vi\u1ec7c x\u00e1c \u0111\u1ecbnh \u0111\u00fang v\u1ecb tr\u00ed ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u00f3, m\u1ed9t v\u00e0i lo\u1ea1i th\u00ec ph\u00f9 h\u1ee3p \u1edf d\u1ea1 d\u00e0y, m\u1ed9t v\u00e0i lo\u1ea1i th\u00ec \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u ho\u1ea1t \u0111\u1ed9ng \u1edf ru\u1ed9t non. Nh\u01b0 v\u1eady hi\u1ec7n nay th\u01b0\u1eddng s\u1ebd s\u1eed d\u1ee5ng h\u1ed7n h\u1ee3p acid h\u1eefu c\u01a1 \u0111\u1ec3 bao \u00a0ph\u1ee7 to\u00e0n b\u1ed9 d\u1ea3i pH c\u1ee7a \u0111\u01b0\u1eddng ti\u00eau h\u00f3a. Nh\u01b0ng vi\u1ec7c s\u1eed d\u1ee5ng c\u0169ng t\u00f9y thu\u1ed9c v\u00e0o y\u00eau c\u1ea7u l\u00e0 g\u00ec, th\u01b0\u1eddng trong th\u1ee9c \u0103n th\u00ec n\u00ean s\u1eed d\u1ee5ng 2 lo\u1ea1i acid m\u1ed9t lo\u1ea1i c\u00f3 cho vi\u1ec7c acid h\u00f3a, c\u00f2n 1 lo\u1ea1i th\u00ec cho t\u00ednh th\u00e8m \u0103n. C\u00f2n v\u1edbi heo n\u00e1i nu\u00f4i con th\u00ec c\u1ea7n acid h\u00f3a n\u01b0\u1edbc ti\u1ec3u th\u00ec ch\u1ec9 c\u1ea7n m\u1ed9t lo\u1ea1i acid \u0111\u01a1n nh\u01b0 acid benzoic.<\/p>\n

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Gi\u00e1 tr\u1ecb pKa v\u00e0 c\u00f4ng th\u1ee9c h\u00f3a h\u1ecdc c\u1ee7a m\u1ed9t v\u00e0i acid th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong th\u1ee9c \u0103n ch\u0103n nu\u00f4i<\/strong><\/p>\n<\/td>\n<\/tr>\n

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Acid<\/strong><\/p>\n<\/td>\n

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pKa<\/strong><\/p>\n<\/td>\n

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C\u00f4ng th\u1ee9c h\u00f3a h\u1ecdc<\/strong><\/p>\n<\/td>\n<\/tr>\n

Propionic<\/td>\n4.88<\/td>\nCH3CH2COOH<\/td>\n<\/tr>\n
Butyric<\/td>\n4.82<\/td>\nCH3CH2CH2COOH<\/td>\n<\/tr>\n
Sorbic<\/td>\n4.76<\/td>\nCH3CH:CHCH:CHCOOH<\/td>\n<\/tr>\n
Acetic<\/td>\n4.75<\/td>\nCH3COOH<\/td>\n<\/tr>\n
Benzoic<\/td>\n4.2<\/td>\nC6H5COOH<\/td>\n<\/tr>\n
Lactic<\/td>\n3.83<\/td>\nCH3CH(OH)COOH<\/td>\n<\/tr>\n
Formic<\/td>\n3.75<\/td>\nHCOOH<\/td>\n<\/tr>\n
Citric<\/td>\n3.13<\/td>\nCOOHCH2C(OH)(COOH)CH2COOH<\/td>\n<\/tr>\n
Fumaric<\/td>\n3.02<\/td>\nCOOHCH:CHCOOH<\/td>\n<\/tr>\n
Phosphoric<\/td>\n2.16<\/td>\nH3PO4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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Nh\u01b0 v\u1eady t\u1eeb b\u1ea3ng tr\u00ean ta th\u1ea5y r\u1eb1ng, v\u1edbi\u00a0 \u0111\u1ed9ng v\u1eadt tr\u01b0\u1edfng th\u00e0nh th\u00ec h\u1ea7u h\u1ebft c\u00e1c acid \u0111\u1ec1u b\u1ea3o to\u00e0n (kh\u00f4ng b\u1ecb ph\u00e2n ly) khi qua d\u1ea1 d\u00e0y v\u00e0 ho\u1ea1t \u0111\u1ed9ng \u1edf ru\u1ed9t non nh\u01b0 ch\u1ea5t ch\u1ed1ng vi khu\u1ea9n. Nh\u01b0ng \u0111\u1ed1i v\u1edbi \u0111\u1ed9ng v\u1eadt non th\u00ec ch\u1ec9 t\u1eeb acid Benzoic\u00a0 tr\u1edf l\u00ean m\u1edbi c\u00f3 t\u00e1c \u0111\u1ed9ng n\u00e0y, c\u00f2n l\u1ea1i t\u1eeb acid lactic tr\u1edf xu\u1ed1ng ch\u1ec9 c\u00f3 t\u00e1c d\u1ee5ng l\u00e0m gi\u1ea3m pH d\u1ea1 d\u00e0y.<\/p>\n

\u0110\u1ec3 ti\u1ebfp c\u1eadn v\u00e0 ti\u00eau di\u1ec7t vi khu\u1ea9n, ch\u1ec9 s\u1ed1 HLB c\u1ee7a acid b\u00e9o c\u0169ng r\u1ea5t quan tr\u1ecdng khi m\u00e0 n\u00f3 li\u00ean quan t\u1edbi \u0111\u1ed9 ph\u00f9 h\u1ee3p \u0111\u1ec3 g\u1eafn v\u00e0o m\u00e0ng t\u1ebf b\u00e0o vi khu\u1ea9n. C\u00e1c acid b\u00e9o m\u1ea1ch trung b\u00ecnh c\u00f3 ch\u1ec9 s\u1ed1 HLB t\u1ed1i \u01b0u cho vi\u1ec7c n\u00e0y. C\u00e1c vi khu\u1ea9n Gram \u00e2m th\u00ec nh\u1ea1y c\u1ea3m v\u1edbi acid caproic ( C6) v\u00e0 caprylic (C8), c\u00e1c vi khu\u1ea9n Gram d\u01b0\u01a1ng th\u00ec nh\u1ea1y c\u1ea3m v\u1edbi v\u1edbi Capric (C10) v\u00e0 lauric (C12) acid b\u00e9o c\u00f3 nhi\u1ec1u trong d\u1ea7u d\u1eeba. Nh\u01b0 v\u1eady h\u1ed7n h\u1ee3p c\u1ee7a 4 acid n\u00e0y th\u00ec s\u1ebd \u0111\u01b0a ra gi\u1ea3i ph\u00e1p t\u1ed1i \u01b0u \u0111\u1ec3 di\u1ec7t vi khu\u1ea9n.<\/p>\n

2. M\u1ed9t v\u00e0i s\u1ed1 li\u1ec7u nghi\u00ean c\u1ee9u v\u1ec1 t\u00e1c d\u1ee5ng c\u1ee7a acid h\u1eefu c\u01a1<\/strong><\/p>\n

 <\/p>\n

\"\"<\/p>\n

Vi\u0323 tri\u0301 hoa\u0323t \u0111o\u0323\u0302ng cu\u0309a ca\u0301c acid hu\u031b\u0303u co\u031b tre\u0302n \u0111u\u031bo\u031b\u0300ng tie\u0302u ho\u0301a (Nguo\u0302\u0300n National Hog Farmer)<\/em><\/p>\n

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C\u00e1c nghi\u00ean c\u1ee9u ch\u1ec9 ra r\u1eb1ng h\u1ea7u h\u1ebft c\u00e1c acid h\u1eefu c\u01a1 m\u1ea1ch ng\u1eafn nh\u01b0 Propionic and Formic d\u00f9ng trong th\u1ee9c \u0103n ho\u1eb7c n\u01b0\u1edbc u\u1ed1ng \u0111\u1ec1u \u0111\u01b0\u1ee3c chuy\u1ec3n h\u00f3a v\u00e0 h\u1ea5p thu \u1edf \u0111o\u1ea1n tr\u00ean c\u1ee7a \u0111\u01b0\u1eddng ti\u00eau h\u00f3a, do \u0111\u00f3 vi\u1ec7c t\u00e1c \u0111\u1ed9ng l\u00ean h\u1ec7 vi sinh v\u1eadt \u1edf ph\u1ea7n d\u01b0\u1edbi l\u00e0 h\u1ea1n ch\u1ebf. Do \u0111\u00f3 d\u1ea1ng vi b\u1ecdc th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u0103ng hi\u1ec7u qu\u1ea3 tr\u00ean to\u00e0n b\u1ed9 \u0111\u01b0\u1eddng ti\u00eau h\u00f3a. Nghi\u00ean c\u1ee9u ch\u1ec9 ra r\u1eb1ng s\u1eed d\u1ee5ng 0.2% acid h\u1eefu c\u01a1 vi b\u1ecdc s\u1ebd l\u00e0m t\u0103ng l\u1ee3i khu\u1ea9n v\u00e0 gi\u1ea3m h\u1ea1i khu\u1ea9n trong \u0111\u01b0\u1eddng ru\u1ed9t c\u1ee7a gia c\u1ea7m.<\/p>\n

T\u00e1c d\u1ee5ng l\u00e0m t\u0103ng k\u00edch th\u01b0\u1edbc c\u1ee7a l\u1edbp vi nhung mao \u0111\u01b0\u1eddng ru\u1ed9t c\u0169ng \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n b\u1edfi s\u1eed d\u1ee5ng acid h\u1eefu c\u01a1. 1% acid sorbic v\u00e0 0.2% acid citric hi\u1ec7u qu\u1ea3 cho g\u00e0 con \u1edf 14 ng\u00e0y tu\u1ed5i. B\u1ed5 xung 0.5%-1% acid formic cho th\u1ee9c \u0103n g\u00e0 th\u1ecbt c\u0169ng l\u00e0m t\u0103ng k\u00edch th\u01b0\u1edbc c\u1ee7a vi nhung mao, \u0111i\u1ec1u \u0111\u00f3 c\u0169ng x\u1ea3y ra khi s\u1eed d\u1ee5ng 0.2-0.4-0.6% acid butyric. C\u00e1c nghi\u00ean c\u1ee9u ch\u1ec9 ra r\u1eb1ng acid butyric s\u1ebd h\u1ed7 tr\u1ee3 r\u1ea5t t\u1ed1t cho g\u00e0 con trong vi\u1ec7c ph\u00e1t tri\u1ec3n \u0111\u01b0\u1eddng ti\u00eau h\u00f3a.<\/p>\n

Acid h\u1eefu c\u01a1 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong th\u1ee9c \u0103n gia c\u1ea7m \u0111\u1ec3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ti\u00eau h\u00f3a ch\u1ea5t dinh d\u01b0\u1ee1ng. S\u1eed d\u1ee5ng 0.5% acid fumaric ho\u1eb7c acid formic v\u00e0 0.75% acid acetic ho\u1eb7c 2% acid citric s\u1ebd t\u0103ng kh\u1ea3 n\u0103ng ti\u00eau h\u00f3a ME v\u00e0 c\u00e1c ch\u1ea5t dinh d\u01b0\u1ee1ng cho g\u00e0 \u0111\u1ebb. D\u00f9ng acid formic 0.5 ho\u1eb7c 1% trong c\u00e1m g\u00e0 th\u1ecbt giai \u0111o\u1ea1n cu\u1ed1i t\u0103ng kh\u1ea3 n\u0103ng ti\u00eau h\u00f3a v\u1eadt ch\u1ea5t kh\u00f4 v\u00e0 \u0111\u1ea1m th\u00f4.<\/p>\n

V\u1edbi nh\u1eefng nguy\u00ean li\u1ec7u kh\u00f3 ti\u00eau h\u00f3a cho gia c\u1ea7m nh\u01b0 kh\u00f4 \u0111\u1eadu vi\u1ec7c b\u1ed5 xung 2% acid citric s\u1ebd l\u00e0m t\u0103ng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a enzyme ph\u00e2n h\u1ee7y c\u00e1c carbohydrate kh\u00f3 ti\u00eau h\u00f3a t\u0103ng hi\u1ec7u qu\u1ea3 s\u1eed d\u1ee5ng. C\u00e1c Ion \u0111i\u1ec7n t\u00edch \u00e2m c\u1ee7a acid h\u1eefu c\u01a1 c\u00f3 th\u1ec3 t\u1ea1o ph\u1ee9c v\u1edbi c\u00e1c lo\u1ea1i kho\u00e1ng nh\u01b0 Ca, P ,Mg, Zn v\u00e0 t\u1eeb \u0111\u00f3 t\u0103ng hi\u1ec7u qu\u1ea3 ti\u00eau h\u00f3a c\u00e1c lo\u1ea1i n\u00e0y.<\/p>\n

Nghi\u00ean c\u1ee9u ch\u1ec9 ra r\u1eb1ng, s\u1eed d\u1ee5ng 0.4% butyrate trong c\u00e1m g\u00e0 th\u1ecbt l\u00e0 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi vi\u1ec7c s\u1eed d\u1ee5ng kh\u00e1ng sinh trong vi\u1ec7c duy tr\u00ec t\u0103ng tr\u1ecdng cho g\u00e0 nh\u01b0ng t\u1ed1t h\u01a1n v\u1ec1 m\u1eb7t FCR.<\/p>\n

H\u1ed7n h\u1ee3p c\u00e1c lo\u1ea1i acid h\u1eefu c\u01a1 c\u00f2n c\u00f3 hi\u1ec7u qu\u1ea3 cao h\u01a1n m\u1ed9t s\u1ed1 kh\u00e1ng sinh k\u00edch th\u00edch t\u0103ng tr\u01b0\u1edfng trong vi\u1ec7c c\u1ea3i thi\u1ec7n th\u00e0nh t\u00edch c\u1ee7a gia c\u1ea7m th\u1ecbt. V\u00ed d\u1ee5 h\u1ed7 h\u1ee3p c\u1ee7a c\u00e1c acid nh\u01b0 lactic, benzoic, formic, citric and acetic trong c\u00e1m g\u00e0 th\u1ecbt kh\u00f4ng nh\u1eefng c\u1ea3i thi\u1ec7n n\u0103ng xu\u1ea5t m\u00e0 con cho ch\u1ea5t l\u01b0\u1ee3ng th\u1ecbt t\u1ed1t h\u01a1n.<\/p>\n

Vi\u1ec7c c\u1ea3i thi\u1ec7n th\u00e0nh t\u00edch c\u1ee7a g\u00e0 th\u1ecbt khi dung acid h\u1eefu c\u01a1 \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng m\u00ecnh, nh\u01b0ng c\u00f3 h\u1ea1n ch\u1ebf l\u00e0 c\u00e1c acid h\u1eefu c\u01a1 th\u01b0\u1eddng b\u1ecb chuy\u1ec3n h\u00f3a nhanh \u1edf di\u1ec1u, \u0111i\u1ec1u \u0111\u00f3 s\u1ebd l\u00e0m gi\u1ea3m hi\u1ec7u qu\u1ea3 s\u1eed d\u1ee5ng. Do \u0111\u00f3, c\u00e1c mu\u1ed1i \u0111\u00f4i c\u1ee7a acid h\u1eefu c\u01a1 nh\u01b0 mu\u1ed1i Kali hay Na diformate l\u00e0 nh\u1eefng c\u00e1i c\u00f3 th\u1ec3 ti\u1ebfp c\u1eadn \u0111\u01b0\u1ee3c xu\u1ed1ng ru\u1ed9t non s\u1ebd c\u00f3 hi\u1ec7u qu\u1ea3 cao h\u01a1n.<\/p>\n

V\u1edbi g\u00e0 18 tu\u1ea7n tu\u1ed5i th\u00ec vi\u1ec7c s\u1eed d\u1ee5ng acid h\u1eefu c\u01a1 c\u0169ng kh\u00f4ng l\u00e0m t\u0103ng nhi\u1ec1u t\u1ec9 l\u1ec7 \u0111\u1ebb, nh\u01b0ng v\u1edbi g\u00e0 24-28 tu\u1ea7n tu\u1ed5i th\u00ec c\u00f3 hi\u1ec7u qu\u1ea3 r\u00f5 r\u1ec7t, v\u00e0 \u0111\u1ed1i v\u1edbi giai \u0111o\u1ea1n t\u1eeb 36-38 tu\u1ea7n tu\u1ed5i th\u00ec s\u1ef1 gi\u1ea3m t\u1ef7 l\u1ec7 \u0111\u1ebb c\u0169ng ch\u1eadm h\u01a1n so v\u1edbi \u0111\u1ed1i ch\u1ee9ng. T\u1ec9 l\u1ec7 \u0111\u1ebb l\u00e0 cao nh\u1ea5t trong nh\u00f3m th\u00ed nghi\u1ec7m khi s\u1eed d\u1ee5ng 1.5% acid h\u1eefu c\u01a1 trong kh\u1ea9u ph\u1ea7n<\/p>\n

Hi\u1ec7u qu\u1ea3 c\u1ee7a t\u1eebng lo\u1ea1i acid h\u1eefu c\u01a1 trong dinh d\u01b0\u1ee1ng \u0111\u1ed9ng v\u1eadt<\/p>\n

2.1. Acid citric<\/em><\/strong><\/p>\n

\u0110\u00e2y l\u00e0 acid c\u00f3 t\u00ednh kh\u00e1ng khu\u1ea9n k\u00e9m nh\u1ea5t so v\u1edbi c\u00e1c lo\u1ea1i acid kh\u00e1c, h\u1ea7u nh\u01b0 kh\u00f4ng c\u00f3 hi\u1ec7u qu\u1ea3 trong vi\u1ec7c gi\u1ea3m pH, kh\u00e1ng khu\u1ea9n trong to\u00e0n b\u1ed9 \u0111\u01b0\u1eddng ti\u00eau h\u00f3a. Kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng h\u1ea1n ch\u1ebf ti\u00eau ch\u1ea3y c\u1ee7a heo con sau cai s\u1eefa. Acid n\u00e0y ch\u1ee7 y\u1ebfu d\u00f9ng \u0111\u1ec3 t\u0103ng t\u00ednh th\u00e8m \u0103n.<\/p>\n

2.2. Acid Propionic<\/em><\/strong><\/p>\n

Ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 ch\u1ed1ng n\u1ea5m m\u1ed1c. Khi s\u1eed d\u1ee5ng cho th\u1ee9c \u0103n heo con th\u00ec v\u1edbi 10kg\/t\u1ea5n th\u1ee9c \u0103n (h\u00e0m l\u01b0\u1ee3ng acid 53.5%) th\u00ec m\u1edbi c\u00f3 t\u00e1c d\u1ee5ng trong vi\u1ec7c gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng vi khu\u1ea9n E.Coli trong d\u1ea1 d\u00e0y, nh\u01b0ng c\u0169ng kh\u00f4ng c\u00f3 t\u00e1c d\u1ee5ng l\u00e0m gi\u1ea3m pH. Cung c\u1ea5p acid propionic trong th\u1ee9c \u0103n cho heo con sau 12 tu\u1ea7n tu\u1ed5i s\u1ebd th\u1ea5y l\u01b0\u1ee3ng vi khu\u1ea9n c\u00f3 l\u1ee3i lactobacilli t\u0103ng l\u00ean. Khuy\u1ebfn c\u00e1o r\u1eb1ng li\u1ec1u l\u01b0\u1ee3ng an to\u00e0n s\u1eed d\u1ee5ng t\u1ed1i \u0111a cho gia c\u1ea7m l\u00e0 10kg\/t\u1ea5n th\u1ee9c \u0103n v\u00e0 trong heo l\u00e0 30 kg\/t\u1ea5n th\u1ee9c \u0103n.<\/p>\n

Acid propionic kh\u00f4ng c\u00f3 \u1ea3nh h\u01b0\u1edfng t\u1edbi Samonella v\u00e0 Coliform trong ru\u1ed9t non, nh\u01b0ng ch\u00fang gi\u1ea3m \u0111i r\u00f5 r\u1ec7t khi s\u1eed d\u1ee5ng \u1edf li\u1ec1u cao 4% acid propionic cho \u0103n li\u00ean t\u1ee5c ho\u1eb7c 7 ng\u00e0y cu\u1ed1i c\u1ee7a th\u1eed nghi\u1ec7m. Nghi\u00ean c\u1ee9u c\u0169ng ch\u1ec9 ra r\u1eb1ng s\u1eed d\u1ee5ng 3 kg\/t\u1ea5n th\u1ee9c \u0103n Caxi propionate l\u00e0m gi\u1ea3m l\u01b0\u1ee3ng coliform trong th\u1ee9c \u0103n g\u00e0 th\u1ecbt, nh\u01b0ng kh\u00f4ng c\u00f3 hi\u1ec7u qu\u1ea3 t\u1edbi clostridium.<\/p>\n

2.3. Acid lactic<\/em><\/strong><\/p>\n

S\u1eed d\u1ee5ng acid lactic \u1edf 0.8% trong th\u1ee9c \u0103n sau cai s\u1ee7a c\u1ee7a heo con c\u0169ng c\u00f3 t\u00e1c d\u1ee5ng l\u00e0m gi\u1ea3m E.Coli trong t\u00e1 tr\u00e0ng c\u1ee7a heo 8 tu\u1ea7n tu\u1ed5i. Acid lactic s\u1eed d\u1ee5ng l\u00e0m gi\u1ea3m pH c\u1ee7a d\u1ea1 d\u00e0y c\u0169ng nh\u01b0 \u0111\u01b0\u1eddng ru\u1ed9t c\u1ee7a heo con sau cai s\u1eefa.<\/p>\n

2.4. Acid formic<\/em><\/strong><\/p>\n

Acid formic c\u00f3 t\u00e1c d\u1ee5ng l\u00e0m gi\u1ea3m pH d\u1ea1 d\u00e0y c\u1ee7a heo con \u1edf h\u00e0m l\u01b0\u1ee3ng 0.35 t\u1edbi 1.2%. S\u1eed d\u1ee5ng d\u1ea1ng mu\u1ed1i Kali diformate \u1edf 0.9 t\u1edbi 1.8% trong th\u1ee9c \u0103n heo con c\u0169ng l\u00e0m gi\u1ea3m pH v\u00e0 vi khu\u1ea9n c\u00f3 h\u1ea1i trong d\u1ea1 d\u00e0y v\u00e0 h\u1ed3i tr\u00e0ng, kh\u00f4ng l\u00e0m gi\u1ea3m l\u01b0\u1ee3ng vi khu\u1ea9n c\u00f3 l\u1ee3i Lactobacilli. M\u1ed9t s\u1ed1 nghi\u00ean c\u1ee9u kh\u00e1c l\u1ea1i ch\u1ec9 ra r\u1eb1ng s\u1eed d\u1ee5ng d\u1ea1ng mu\u1ed1i th\u00ec kh\u00f4ng t\u00e1c \u0111\u1ed9ng l\u00ean pH nh\u01b0ng s\u1ebd t\u0103ng h\u00e0m l\u01b0\u1ee3ng c\u1eeda acid formic trong d\u1ea1 d\u00e0y v\u00e0 ru\u1ed9t non. D\u00f9ng 0.8 t\u1edbi 1.2% Kali diformate trong th\u1ee9c \u0103n heo n\u00e1i s\u1ebd gi\u00fap t\u0103ng \u0111\u1ed9 d\u00e0y m\u1ee1 l\u01b0ng trong khi l\u01b0\u1ee3ng \u0103n v\u00e0 t\u0103ng tr\u1ecdng kh\u00f4ng thay \u0111\u1ed5i, heo con sinh ra n\u1eb7ng h\u01a1n. L\u00e0m t\u0103ng l\u01b0\u1ee3ng b\u00e9o trong s\u1eefa heo n\u00e1i. M\u1ed9t s\u1ed1 nghi\u00ean c\u1ee9u c\u00f2n cho th\u1ea5y r\u1eb1ng 0.8% kali diformate trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1edbi s\u1ebd l\u00e0m t\u0103ng l\u01b0\u1ee3ng \u0103n t\u1eeb 3 ng\u00e0y sau sinh, gi\u1ea3m s\u1ef1 m\u1ea5t tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 s\u1ef1 m\u1ea5t l\u1edbp m\u1ee1 l\u01b0ng sau sinh c\u1ee7a heo n\u00e1i. Cho heo th\u1ecbt th\u00ec o.9% Natri format s\u1ebd l\u00e0m c\u1ea3i thi\u1ec7n t\u0103ng tr\u1ecdng v\u00e0 FCR, ADG.<\/p>\n

Acid formic c\u00f3 th\u1ec3 di\u1ec7t \u0111\u01b0\u1ee3c Samonella tr\u00ean c\u00e1c nguy\u00ean li\u1ec7u b\u1ecb l\u00e2y nhi\u1ec5m nh\u01b0ng hi\u1ec7u qu\u1ea3 th\u00ec kh\u00e1c nhau. V\u1edbi 1% acid formic th\u00ec hi\u1ec7u qu\u1ea3 \u0111\u1ed1i v\u1edbi kh\u00f4 c\u1ea3i \u0111\u1eafng nh\u01b0ng kh\u00f4ng t\u1ed1t tr\u00ean kh\u00f4 \u0111\u1eadu. Kh\u00f4ng c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 hi\u1ec7u qu\u1ea3 khi s\u1eed d\u1ee5ng acid formic hay acid h\u1ed7n h\u1ee3p (acid formic, acid propionic vaf Na formate).<\/p>\n

Mu\u1ed1i amonium formate c\u0169ng l\u00e0m gi\u1ea3m E.coli trong \u0111\u01b0\u1eddng ru\u1ed9t, nh\u01b0ng kh\u00f4ng c\u00f3 t\u00e1c d\u1ee5ng \u0111\u1ed1i v\u1edbi Clostridium. Trong khi \u0111\u00f3 Kali diformate v\u1edbi 0.45% c\u00f3 th\u1ec3 gi\u1ea3m t\u1ec9 l\u1ec7 ch\u1ebft nguy\u00ean nh\u00e2n b\u1edfi vi\u00eam ru\u1ed9t ho\u1ea1i t\u1eed nh\u1ea5t l\u00e0 sau 35 ng\u00e0y th\u00ec gi\u1ea3m r\u00f5 r\u1ec7t.<\/p>\n

2.5. Acid butyric<\/em><\/strong><\/p>\n

C\u00f3 t\u00e1c d\u1ee5ng l\u00e0m t\u0103ng sinh t\u1ebf b\u00e0o bi\u1ec3u m\u00f4, t\u0103ng \u0111\u1ed9 d\u00e0i c\u1ee7a c\u00e1c l\u00f4ng nhung mao \u0111\u01b0\u1eddng ru\u1ed9t c\u1ee7a heo khi d\u00f9ng 0.17% mu\u1ed1i Na butyrate v\u00e0 l\u00e0m thay \u0111\u1ed5i h\u00ecnh th\u00e1i c\u1ee7a ru\u1ed9t. Acid butyric c\u0169ng l\u00e0m t\u0103ng s\u1ef1 ti\u1ebft ra c\u1ee7a enzyme tuy\u1ebfn t\u1ee5y, \u0111\u1ed3ng th\u1eddi l\u00e0 ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng ch\u00ednh cho c\u00e1c t\u1ebf b\u00e0o bi\u1ec3u m\u00f4 c\u1ee7a ru\u1ed9t gi\u00e0.<\/p>\n

Mu\u1ed1i Natri butyrate trong c\u1ea3 hai d\u1ea1ng b\u1ecdc b\u00e9o v\u00e0 kh\u00f4ng b\u1ecdc \u0111\u1ec1u c\u00f3 kh\u1ea3 n\u0103ng gi\u1ea3m s\u1ef1 c\u01b0 tr\u00fa c\u1ee7a Samonella trong manh tr\u00e0ng c\u1ee7a g\u00e0 th\u1ecbt. Mu\u1ed1i Na c\u1ee7a acid butyric b\u1ecdc m\u1ed9t ph\u1ea7n c\u00f3 hi\u1ec7u qu\u1ea3 h\u01a1n lo\u1ea1i kh\u00f4ng b\u1ecdc trong vi\u1ec7c ti\u00eau di\u1ec7t Samonella.<\/p>\n

N\u1ed3ng \u0111\u1ed9 \u1ee9c ch\u1ebf vi khu\u1ea9n t\u1ed1i thi\u1ec3u c\u1ee7a c\u00e1c acid h\u1eefu c\u01a1:<\/p>\n\n\n\n\n\n\n\n\n\n
<\/td>\nFormic acid [%]<\/strong><\/td>\nPropionic acid [%]<\/strong><\/td>\nLactic acid [%]<\/strong><\/td>\n<\/tr>\n
Salmonella typhimurium<\/td>\n0,10<\/td>\n0,15<\/td>\n0,30<\/td>\n<\/tr>\n
Escherichia coli<\/td>\n0,15<\/td>\n0,20<\/td>\n0,40<\/td>\n<\/tr>\n
Campylobacter jejuni<\/td>\n0,10<\/td>\n0,20<\/td>\n0,25<\/td>\n<\/tr>\n
Staphylococcus aureus<\/td>\n0,15<\/td>\n0,25<\/td>\n0,40<\/td>\n<\/tr>\n
Clostridium botulinum<\/td>\n0,15<\/td>\n0,25<\/td>\n0,30<\/td>\n<\/tr>\n
Clostridium perfringens<\/td>\n0,10<\/td>\n0,25<\/td>\n0,30<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

3. K\u1ebft lu\u1eadn<\/strong><\/p>\n

\u2013 Acid h\u1eefu c\u01a1 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i cho c\u1ea3 th\u1ee9c \u0103n gia s\u00fac v\u00e0 gia c\u1ea7m nh\u1eb1m b\u1ea3o qu\u1ea3n th\u1ee9c \u0103n c\u0169ng nh\u01b0 ti\u00eau di\u1ec7t vi khu\u1ea9n, t\u0103ng kh\u1ea3 n\u0103ng ti\u00eau h\u00f3a, gi\u1ea3m ch\u1ea5t th\u1ea3i, t\u1eeb \u0111\u00f3 n\u00e2ng cao \u0111\u01b0\u1ee3c th\u00e0nh t\u00edch c\u1ee7a \u0111\u1ed9ng v\u1eadt. Nhi\u1ec1u nghi\u00ean c\u1ee9u khoa h\u1ecdc \u0111\u00e3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u0111\u1ec3 ch\u1ee9ng minh.<\/p>\n

\u2013 Trong \u0111\u00f3 tr\u00ean gia c\u1ea7m c\u00f3 nhi\u1ec1u b\u1eb1ng ch\u1ee9ng nghi\u00ean c\u1ee9u khoa h\u1ecdc cho c\u1ea3 t\u00ednh ch\u1ea5t k\u00edch th\u00edch t\u0103ng tr\u01b0\u1edfng v\u00e0 ng\u0103n ng\u1eeba b\u1ec7nh t\u1eadt. Trong khi \u0111\u00f3 \u0111\u1ed1i v\u1edbi heo vi\u1ec7c \u1ee9ng d\u1ee5ng cho k\u00edch th\u00edch t\u0103ng tr\u01b0\u1edfng c\u00f3 b\u1eb1ng ch\u1ee9ng khoa h\u1ecdc m\u1ea1nh m\u1ebd, c\u00f2n vi\u1ec7c ng\u0103n ng\u1eeba b\u1ec7nh th\u00ec c\u00f3 kh\u00f4ng nhi\u1ec1u b\u1eb1ng ch\u1ee9ng khoa h\u1ecdc.<\/p>\n

\u2013 Acid h\u1eefu c\u01a1 c\u0169ng n\u1eb1m trong nh\u00f3m c\u00e1c ch\u1ea5t ph\u1ee5 gia c\u00f3 th\u1ec3 thay th\u1ebf kh\u00e1ng sinh<\/p>\n

\u2013 Acid h\u1eefu c\u01a1 c\u00f3 hi\u1ec7u qu\u1ea3 tr\u00ean gia c\u1ea7m, heo con v\u00e0 heo choai v\u00e0 th\u1ee7y s\u1ea3n. Trong \u0111\u00f3 cho gia c\u1ea7m ch\u1ee7 y\u1ebfu\u00a0 v\u1edbi m\u1ee5c \u0111\u00edch ng\u0103n ng\u1eeba v\u00e0 di\u1ec7t khu\u1ea9n, cho heo ch\u1ee7 y\u1ebfu v\u1edbi m\u1ee5c \u0111\u00edch h\u1ea1 pH d\u1ea1 d\u00e0y.<\/p>\n

\u2013 Nhi\u1ec1u nghi\u00ean c\u1ee9u \u0111\u00e3 ch\u1ee9ng minh hi\u1ec7u qu\u1ea3 c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng acid formic v\u00e0 d\u1ea1ng mu\u1ed1i formate tr\u00ean gia c\u1ea7m<\/p>\n

\u2013 Acid formic v\u00e0 acid propionic th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nh\u1ea5t. N\u1ed3ng \u0111\u1ed9 t\u1ed1i thi\u1ec3u \u0111\u1ec3 c\u00f3 th\u1ec3 \u1ee9c ch\u1ebf vi khu\u1ea9n c\u1ee7a Acid formic l\u00e0 th\u1ea5p nh\u1ea5t, sau \u0111\u00f3 \u0111\u1ebfn acid propionic v\u00e0 acid lactic<\/p>\n

\u2013 Tr\u00ean heo th\u01b0\u1eddng s\u1eed d\u1ee5ng h\u1ed7n h\u1ee3p c\u00e1c lo\u1ea1i acid v\u00e0 mu\u1ed1i c\u1ee7a ch\u00fang, hai acid hay \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng k\u1ebft h\u1ee3p l\u00e0 acid formic v\u00e0 lactic<\/p>\n

\u2013 Acid butyric v\u00e0 benzoic th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf d\u1ea1ng \u0111\u01a1n c\u00f9ng v\u1edbi mu\u1ed1i c\u1ee7a ch\u00fang, cho c\u00e1c m\u1ee5c \u0111\u00edch ri\u00eang bi\u1ec7t.<\/p>\n

\u2013 \u0110\u1ec3 ti\u00eau di\u1ec7t ho\u1eb7c h\u1ea1n ch\u1ebf s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a Samonella th\u00ec acid formic ho\u1eb7c h\u1ed7n h\u1ee3p acid formic v\u00e0 propionic l\u00e0 hi\u1ec7u qu\u1ea3 nh\u1ea5t<\/p>\n

\u2013 \u0110\u1ec3 ph\u00e1t tri\u1ec3n l\u1edbp vi nhung mao \u0111\u01b0\u1eddng ru\u1ed9t th\u00ec acid butyric v\u00e0 mu\u1ed1i c\u1ee7a n\u00f3 s\u1ebd c\u00f3 hi\u1ec7u qu\u1ea3 nh\u1ea5t, acid formic v\u00e0 sorbic c\u0169ng c\u00f3 t\u00e1c d\u1ee5ng nh\u01b0ng c\u1ea7n s\u1eed d\u1ee5ng li\u1ec1u cao h\u01a1n cho m\u1ee5c \u0111\u00edch n\u00e0y.<\/p>\n","protected":false},"excerpt":{"rendered":"

1. C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng-vai tr\u00f2 c\u1ee7a acid h\u1eefu c\u01a1   C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a acid h\u1eefu c\u01a1 v\u00e0 mu\u1ed1i c\u1ee7a ch\u00fang M\u1ee5c ti\u00eau Lo\u1ea1i acid v\u00e0 c\u00e1c d\u1ea1ng mu\u1ed1i C\u01a1 ch\u1ebf t\u00e1c \u0111\u1ed9ng Trong th\u1ee9c \u0103n Acid propionic; acid formic, acid sorbic Gi\u1ea3m pHCh\u1ed1ng m\u1ed1c, ch\u1ed1ng n\u1ea5m, ch\u1ed1ng vi khu\u1ea9n Trong \u0111\u01b0\u1eddng ti\u00eau […]<\/p>\n","protected":false},"author":1,"featured_media":120,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[9],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/icolor.com.vn\/lachongs\/wp-json\/wp\/v2\/posts\/119"}],"collection":[{"href":"https:\/\/icolor.com.vn\/lachongs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/icolor.com.vn\/lachongs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/icolor.com.vn\/lachongs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/icolor.com.vn\/lachongs\/wp-json\/wp\/v2\/comments?post=119"}],"version-history":[{"count":1,"href":"https:\/\/icolor.com.vn\/lachongs\/wp-json\/wp\/v2\/posts\/119\/revisions"}],"predecessor-version":[{"id":121,"href":"https:\/\/icolor.com.vn\/lachongs\/wp-json\/wp\/v2\/posts\/119\/revisions\/121"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/icolor.com.vn\/lachongs\/wp-json\/wp\/v2\/media\/120"}],"wp:attachment":[{"href":"https:\/\/icolor.com.vn\/lachongs\/wp-json\/wp\/v2\/media?parent=119"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/icolor.com.vn\/lachongs\/wp-json\/wp\/v2\/categories?post=119"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/icolor.com.vn\/lachongs\/wp-json\/wp\/v2\/tags?post=119"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}