{"id":7482,"date":"2024-07-15T13:23:07","date_gmt":"2024-07-15T06:23:07","guid":{"rendered":"https:\/\/apanano.com\/vi\/?p=7482"},"modified":"2024-07-15T13:23:07","modified_gmt":"2024-07-15T06:23:07","slug":"ung-dung-nghien-cuu-khau-phan-va-tieu-chay-khoi-luong-so-sinh-va-nang-suat","status":"publish","type":"post","link":"https:\/\/apanano.vn\/vi\/ung-dung-nghien-cuu-khau-phan-va-tieu-chay-khoi-luong-so-sinh-va-nang-suat\/","title":{"rendered":"\u1ee8ng d\u1ee5ng nghi\u00ean c\u1ee9u kh\u1ea9u ph\u1ea7n v\u00e0 ti\u00eau ch\u1ea3y, kh\u1ed1i l\u01b0\u1ee3ng s\u01a1 sinh v\u00e0 n\u0103ng su\u1ea5t"},"content":{"rendered":"<p><strong>Trong b\u00e0i \u0111\u00e1nh gi\u00e1 n\u00e0y, Ioannis Mavromichalis kh\u1ea3o s\u00e1t c\u00e1c nghi\u00ean c\u1ee9u c\u00f3 t\u1ea7m quan tr\u1ecdng thi\u1ebft th\u1ef1c \u0111\u1ed1i v\u1edbi ng\u00e0nh ch\u0103n nu\u00f4i heo to\u00e0n c\u1ea7u trong th\u1eddi gian g\u1ea7n \u0111\u00e2y.<\/strong><\/p>\n<p><strong>M\u1ed1i li\u00ean h\u1ec7 gi\u1eefa kh\u1ea9u ph\u1ea7n \u0103n v\u00e0 b\u1ec7nh ti\u00eau ch\u1ea3y:\u00a0<\/strong>B\u1ec7nh ti\u00eau ch\u1ea3y Escherichia coli g\u1eafn li\u1ec1n v\u1edbi kh\u1ea9u ph\u1ea7n \u0103n c\u00f3 t\u1ef7 l\u1ec7 ti\u00eau h\u00f3a th\u1ea5p sau khi cai s\u1eefa, do c\u00e1c d\u01b0\u1ee1ng ch\u1ea5t kh\u00f4ng ti\u00eau h\u00f3a \u0111\u01b0\u1ee3c t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a vi khu\u1ea9n enterotoxigenic E. coli trong \u0111\u01b0\u1eddng ru\u1ed9t.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-54812 lazyload\" data-src=\"https:\/\/nhachannuoi.vn\/wp-content\/uploads\/2022\/05\/heo-con-1.png\" data-sizes=\"(max-width: 674px) 100vw, 674px\" data-srcset=\"https:\/\/nhachannuoi.vn\/wp-content\/uploads\/2022\/05\/heo-con-1.png 674w, https:\/\/nhachannuoi.vn\/wp-content\/uploads\/2022\/05\/heo-con-1-300x192.png 300w\" alt=\"\" width=\"674\" height=\"432\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 674px; --smush-placeholder-aspect-ratio: 674\/432;\" \/><\/p>\n<p>K\u1ebft qu\u1ea3 l\u00e0 l\u00e0m t\u0103ng b\u00e0i ti\u1ebft d\u1ecbch ru\u1ed9t v\u00e0 ch\u1ea5t \u0111i\u1ec7n gi\u1ea3i d\u1eabn \u0111\u1ebfn ti\u00eau ch\u1ea3y, suy dinh d\u01b0\u1ee1ng, ch\u1eadm ph\u00e1t tri\u1ec3n, v\u00e0 \u0111\u00f4i khi b\u1ecb ch\u1ebft. M\u1ed9t nh\u00f3m nghi\u00ean c\u1ee9u ng\u01b0\u1eddi Canada g\u1ea7n \u0111\u00e2y \u0111\u00e3 b\u00e1o c\u00e1o v\u1ec1 k\u1ebft qu\u1ea3 trong cu\u1ed9c kh\u1ea3o s\u00e1t to\u00e0n di\u1ec7n g\u1ed3m 34 trang tr\u1ea1i th\u01b0\u01a1ng m\u1ea1i trong \u0111\u00f3 17 trang tr\u1ea1i g\u1eb7p v\u1ea5n \u0111\u1ec1 v\u1edbi E. coli. H\u1ecd ch\u1ec9 ra r\u1eb1ng ph\u1ea7n l\u1edbn c\u00e1c s\u1ef1 c\u1ed1 ti\u00eau ch\u1ea3y x\u1ea3y ra trong kho\u1ea3ng 3 \u0111\u1ebfn 10 ng\u00e0y sau cai s\u1eefa, m\u1eb7c d\u00f9 c\u00e1c tr\u01b0\u1eddng h\u1ee3p ch\u1eadm nh\u1ea5t x\u1ea3y ra sau 23 ng\u00e0y cai s\u1eefa kh\u00f4ng ph\u1ea3i l\u00e0 hi\u1ebfm. T\u1ea1i nh\u1eefng trang tr\u1ea1i heo con th\u01b0\u1eddng m\u1eafc b\u1ec7nh ti\u00eau ch\u1ea3y E. coli, kh\u1ea9u ph\u1ea7n cung c\u1ea5p cho nh\u1eefng con heo n\u00e0y \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n l\u00e0 c\u00f3 ch\u1ee9a h\u00e0m l\u01b0\u1ee3ng protein th\u1ef1c v\u1eadt cao h\u01a1n (+11%), c\u1ee5 th\u1ec3 l\u00e0 kh\u00f4 d\u1ea7u \u0111\u1eadu n\u00e0nh v\u00e0 kh\u00f4 d\u1ea7u h\u1ea1t c\u1ea3i y\u1ebfu t\u1ed1 g\u00e2y vi\u00eam \u0111\u01b0\u1eddng ti\u00eau h\u00f3a \u1edf heo cai s\u1eefa (B\u1ea3ng 1). Ngo\u00e0i ra, heo b\u1ecb ti\u00eau ch\u1ea3y \u0111\u01b0\u1ee3c cho \u0103n kh\u1ea9u ph\u1ea7n gi\u00e0u canxi (+20%) v\u00e0 magi\u00ea (+6%), c\u1ea3 hai \u0111\u1ec1u l\u00e0m t\u0103ng gi\u00e1 tr\u1ecb \u0111\u1ec7m c\u1ee7a th\u1ee9c \u0103n. H\u01a1n n\u1eefa, k\u1ebdm t\u1eeb k\u1ebdm oxit chi\u1ebfm 27% \u00edt h\u01a1n trong kh\u1ea9u ph\u1ea7n \u0103n cho heo b\u1ecb nhi\u1ec5m E. coli. Cu\u1ed1i c\u00f9ng, s\u1ef1 c\u00e2n b\u1eb1ng \u0111i\u1ec7n gi\u1ea3i b\u1ecb gi\u1ea3m trong kh\u1ea9u ph\u1ea7n heo b\u1ecb ti\u00eau ch\u1ea3y (-9%). M\u1eb7c d\u00f9 nghi\u00ean c\u1ee9u n\u00e0y kh\u00f4ng thi\u1ebft l\u1eadp r\u00f5 r\u00e0ng m\u1ed1i li\u00ean h\u1ec7 nguy\u00ean nh\u00e2n-k\u1ebft qu\u1ea3 gi\u1eefa th\u00e0nh ph\u1ea7n th\u1ee9c \u0103n v\u00e0 b\u1ec7nh ti\u00eau ch\u1ea3y E. coli, nh\u01b0ng n\u00f3 \u0111\u00e3 ch\u1ec9 ra c\u00f3 \u00edt nh\u1ea5t m\u1ed9t d\u1ea5u hi\u1ec7u cho th\u1ea5y kh\u1ea9u ph\u1ea7n \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng kh\u00f4ng \u0111\u00fang c\u00e1ch (1) c\u00f3 kh\u1ea3 n\u0103ng l\u00e0m heo b\u1ecb ti\u00eau ch\u1ea3y, (2) t\u0103ng c\u01b0\u1eddng c\u00e1c tri\u1ec7u ch\u1ee9ng c\u1ee7a b\u1ec7nh, ho\u1eb7c (3) ch\u1eadm ph\u1ee5c h\u1ed3i.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Kh\u1ed1i l\u01b0\u1ee3ng heo con s\u01a1 sinh v\u00e0 n\u0103ng su\u1ea5t<\/strong><\/p>\n<p>M\u1ed9t nghi\u00ean c\u1ee9u to\u00e0n di\u1ec7n g\u1ea7n \u0111\u00e2y \u1edf Ph\u00e1p \u0111\u00e3 l\u00e0m r\u00f5 m\u1ed1i li\u00ean h\u1ec7 gi\u1eefa kh\u1ed1i l\u01b0\u1ee3ng s\u01a1 sinh v\u00e0 \u1ea3nh h\u01b0\u1edfng l\u00e2u d\u00e0i c\u1ee7a n\u00f3 \u0111\u1ed1i v\u1edbi n\u0103ng su\u1ea5t heo. D\u1eef li\u1ec7u t\u1eeb 965 l\u1ee9a \u0111\u1ebb v\u1edbi t\u1ed5ng s\u1ed1 h\u01a1n 12.000 heo con \u0111\u01b0\u1ee3c sinh ra \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 s\u1ef1 thay \u0111\u1ed5i kh\u1ed1i l\u01b0\u1ee3ng t\u1ea1i th\u1eddi \u0111i\u1ec3m sinh v\u00e0 n\u0103ng su\u1ea5t sau cai s\u1eefa. Khi s\u01a1 sinh, kh\u1ed1i l\u01b0\u1ee3ng c\u01a1 th\u1ec3 trung b\u00ecnh c\u1ee7a l\u1ee9a d\u01b0\u1edbi 11 con l\u00e0 1.59 kg, nh\u01b0ng \u1edf l\u1ee9a tr\u00ean 16 con ch\u1ec9 n\u1eb7ng 1.26 kg. \u0110\u1ed9 l\u1ec7ch chu\u1ea9n t\u0103ng \u0111\u00e1ng k\u1ec3 v\u1edbi quy m\u00f4 l\u1ee9a t\u1eeb 0.26 kg \u0111\u1ebfn 0.30 kg t\u01b0\u01a1ng \u1ee9ng v\u1edbi l\u1ee9a d\u01b0\u1edbi 11 con ho\u1eb7c l\u1ee9a tr\u00ean 16 con. Kh\u1ed1i l\u01b0\u1ee3ng l\u00fac cai s\u1eefa (19-27 ng\u00e0y tu\u1ed5i) c\u00f3 li\u00ean h\u1ec7 ch\u1eb7t ch\u1ebd v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng s\u01a1 sinh th\u00f4ng qua m\u1ed1i quan h\u1ec7 sau:<\/p>\n<p>ww = 1.9 + (6.1 x Bw) \u2013 1.06 x Bw2 (r.s.d. = 1.5) Ng\u01b0\u1eddi ta t\u00ednh \u0111\u01b0\u1ee3c r\u1eb1ng c\u1ee9 t\u0103ng 100 g kh\u1ed1i l\u01b0\u1ee3ng s\u01a1 sinh, th\u00ec t\u0103ng 400 g kh\u1ed1i l\u01b0\u1ee3ng l\u00fac cai s\u1eefa, m\u1eb7c d\u00f9 con s\u1ed1 n\u00e0y b\u1ecb sai l\u1ec7ch \u0111\u1ed1i v\u1edbi heo con sinh ra c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng g\u1ea7n 2 kg. Ng\u01b0\u1eddi ta c\u00f2n ghi nh\u1eadn r\u1eb1ng t\u1ef7 l\u1ec7 t\u0103ng tr\u01b0\u1edfng t\u1eeb l\u00fac s\u01a1 sinh \u0111\u1ebfn l\u00fac cai s\u1eefa c\u1ee7a heo nh\u1eb9 c\u00e2n cao h\u01a1n, \u0111i\u1ec1u n\u00e0y cho th\u1ea5y t\u1ed1c \u0111\u1ed9 t\u0103ng tr\u01b0\u1edfng nhanh ch\u00f3ng nh\u1eb1m \u0111u\u1ed5i k\u1ecbp v\u1edbi l\u1ee9a c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng n\u1eb7ng h\u01a1n. V\u00ed d\u1ee5, heo con sinh ra nh\u1eb9 h\u01a1n 0.7 kg kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a ch\u00fang t\u0103ng g\u1ea5p b\u1ea3y l\u1ea7n t\u1ea1i th\u1eddi \u0111i\u1ec3m cai s\u1eefa, trong khi \u0111\u00f3 heo con sinh ra c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng h\u01a1n 2 kg ch\u1ec9 t\u0103ng g\u1ea5p b\u1ed1n l\u1ea7n l\u00fac cai s\u1eefa. Ch\u00eanh l\u1ec7ch gi\u1eefa heo nh\u1eb9 c\u00e2n v\u00e0 n\u1eb7ng c\u00e2n l\u00fac s\u01a1 sinh t\u0103ng \u0111\u1ebfn 5.4 kg l\u00fac cai s\u1eefa v\u00e0 11.9 kg l\u00fac 63 ng\u00e0y tu\u1ed5i. Heo con sinh ra c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng 1 kg \u0111\u1ea1t kh\u1ed1i l\u01b0\u1ee3ng xu\u1ea5t chu\u1ed3ng (105 kg) ch\u1eadm h\u01a1n hai tu\u1ea7n so v\u1edbi heo sinh ra c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng 2 kg. D\u1eabn ch\u1ee9ng t\u1eeb c\u00e1c d\u1eef li\u1ec7u tr\u00ean cho th\u1ea5y c\u00e2n n\u1eb7ng s\u01a1 sinh c\u00f3 \u00fd ngh\u0129a h\u1ebft s\u1ee9c quan tr\u1ecdng \u0111\u1ed1i v\u1edbi n\u0103ng su\u1ea5t l\u00e2u d\u00e0i. \u0110\u1ec3 t\u0103ng t\u1ed1c \u0111\u1ed9 ph\u00e1t tri\u1ec3n c\u1ee7a heo nh\u1eb9 c\u00e2n nh\u1eb1m b\u1eaft k\u1ecbp v\u1edbi l\u1ee9a n\u1eb7ng c\u00e2n c\u1ea7n \u0111\u01b0\u1ee3c khuy\u1ebfn kh\u00edch b\u1eb1ng vi\u1ec7c b\u1ed5 sung dinh d\u01b0\u1ee1ng.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>B\u1ea3ng 1<\/strong>. Kh\u1ea9u ph\u1ea7n \u1edf nh\u1eefng trang tr\u1ea1i n\u01a1i heo con b\u1ecb ti\u00eau ch\u1ea3y E. coli.<\/p>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td><\/td>\n<td valign=\"top\">Trang tr\u1ea1i nhi\u1ec5m ti\u00eau ch\u1ea3y<\/td>\n<td valign=\"top\">So s\u00e1nh v\u1edbi trang tr\u1ea1i \u0111\u1ed1i ch\u1ee9ng<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\">Kh\u00f4 d\u1ea7u \u0111\u1eadu n\u00e0nh v\u00e0 kh\u00f4 d\u1ea7u h\u1ea1t c\u1ea3i (kg\/t\u1ea5n)<\/td>\n<td valign=\"top\">241<\/td>\n<td valign=\"top\">+26.5<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\">Canxi (%)<\/td>\n<td valign=\"top\">1.26<\/td>\n<td valign=\"top\">+0.25<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\">Magie (%)<\/td>\n<td valign=\"top\">0.18<\/td>\n<td valign=\"top\">+0.01<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\">K\u1ebdm (ppm)<\/td>\n<td valign=\"top\">2182<\/td>\n<td valign=\"top\">-596<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\">C\u00e2n b\u1eb1ng \u0111i\u1ec7n gi\u1ea3i (mEq\/kg)<\/td>\n<td valign=\"top\">250<\/td>\n<td valign=\"top\">-22<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p><em>Nh\u00e0 ch\u0103n nu\u00f4i<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Trong b\u00e0i \u0111\u00e1nh gi\u00e1 n\u00e0y, Ioannis Mavromichalis kh\u1ea3o s\u00e1t c\u00e1c nghi\u00ean c\u1ee9u c\u00f3 t\u1ea7m quan tr\u1ecdng thi\u1ebft th\u1ef1c \u0111\u1ed1i v\u1edbi ng\u00e0nh ch\u0103n nu\u00f4i heo to\u00e0n c\u1ea7u trong th\u1eddi gian g\u1ea7n \u0111\u00e2y. M\u1ed1i li\u00ean h\u1ec7 gi\u1eefa kh\u1ea9u ph\u1ea7n \u0103n v\u00e0 b\u1ec7nh ti\u00eau ch\u1ea3y:\u00a0B\u1ec7nh ti\u00eau ch\u1ea3y Escherichia coli g\u1eafn li\u1ec1n v\u1edbi kh\u1ea9u ph\u1ea7n \u0103n c\u00f3 t\u1ef7 l\u1ec7 [&#8230;]\n","protected":false},"author":722,"featured_media":7483,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27,89],"tags":[999,821,998,871,981,868,138,95,905,125,862,832,989,791],"class_list":["post-7482","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","category-industry-news","tag-benh-tieu-chay-cap-tren-heo","tag-fcr","tag-kiem-soat-tieu-chay","tag-men-tieu-hoa","tag-nuoi-lon-thit","tag-protein-tho","tag-thu-y","tag-thuc-an-cho-heo","tag-thuc-an-cho-lon","tag-thuoc-thu-y","tag-thuoc-thu-y-apa","tag-tieu-hoa","tag-ty-le-chuyen-doi-thuc-an","tag-vitamin"],"_links":{"self":[{"href":"https:\/\/apanano.vn\/vi\/wp-json\/wp\/v2\/posts\/7482","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/apanano.vn\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/apanano.vn\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/apanano.vn\/vi\/wp-json\/wp\/v2\/users\/722"}],"replies":[{"embeddable":true,"href":"https:\/\/apanano.vn\/vi\/wp-json\/wp\/v2\/comments?post=7482"}],"version-history":[{"count":1,"href":"https:\/\/apanano.vn\/vi\/wp-json\/wp\/v2\/posts\/7482\/revisions"}],"predecessor-version":[{"id":7484,"href":"https:\/\/apanano.vn\/vi\/wp-json\/wp\/v2\/posts\/7482\/revisions\/7484"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/apanano.vn\/vi\/wp-json\/wp\/v2\/media\/7483"}],"wp:attachment":[{"href":"https:\/\/apanano.vn\/vi\/wp-json\/wp\/v2\/media?parent=7482"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/apanano.vn\/vi\/wp-json\/wp\/v2\/categories?post=7482"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/apanano.vn\/vi\/wp-json\/wp\/v2\/tags?post=7482"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}