{"id":111273,"date":"2021-07-31T08:40:46","date_gmt":"2021-07-31T15:40:46","guid":{"rendered":"https:\/\/www.pandasilk.com\/why-do-silkworms-produce-cocoons\/"},"modified":"2025-01-12T14:30:30","modified_gmt":"2025-01-12T22:30:30","slug":"why-do-silkworms-produce-cocoons","status":"publish","type":"post","link":"https:\/\/www.pandasilk.com\/vi\/why-do-silkworms-produce-cocoons\/","title":{"rendered":"T\u01a1 t\u1eb1m v\u00e0 b\u00ed \u1ea9n chi\u1ebfc k\u00e9n: V\u00ec sao s\u00e2u t\u1eb1m nh\u1ea3 t\u01a1?"},"content":{"rendered":"<p>T\u01a1 t\u1eb1m, m\u1ed9t ch\u1ea5t li\u1ec7u m\u1ec1m m\u1ea1i, \u00f3ng \u00e1nh v\u00e0 sang tr\u1ecdng, \u0111\u01b0\u1ee3c t\u1ea1o ra t\u1eeb nh\u1eefng chi\u1ebfc k\u00e9n nh\u1ecf b\u00e9 do s\u00e2u t\u1eb1m s\u1ea3n xu\u1ea5t. Nh\u01b0ng t\u1ea1i sao s\u00e2u t\u1eb1m l\u1ea1i c\u1ea7n ph\u1ea3i t\u1ea1o ra nh\u1eefng chi\u1ebfc k\u00e9n n\u00e0y?  C\u00e2u tr\u1ea3 l\u1eddi kh\u00f4ng \u0111\u01a1n gi\u1ea3n ch\u1ec9 l\u00e0 \u0111\u1ec3 t\u1ea1o ra t\u01a1, m\u00e0 c\u00f2n li\u00ean quan \u0111\u1ebfn chu k\u1ef3 s\u1ed1ng v\u00e0 s\u1ef1 sinh t\u1ed3n c\u1ee7a lo\u00e0i c\u00f4n tr\u00f9ng n\u00e0y.<\/p>\n<h3>1. K\u00e9n: N\u01a1i l\u1ed9t x\u00e1c th\u00e0nh b\u01b0\u1edbm<\/h3>\n<p>Ch\u1ee9c n\u0103ng ch\u00ednh v\u00e0 quan tr\u1ecdng nh\u1ea5t c\u1ee7a k\u00e9n \u0111\u1ed1i v\u1edbi s\u00e2u t\u1eb1m l\u00e0 \u0111\u1ec3 b\u1ea3o v\u1ec7 nh\u1ed9ng \u2013 giai \u0111o\u1ea1n ph\u00e1t tri\u1ec3n quan tr\u1ecdng gi\u1eefa giai \u0111o\u1ea1n s\u00e2u v\u00e0 giai \u0111o\u1ea1n b\u01b0\u1edbm.  Sau khi tr\u1ea3i qua b\u1ed1n l\u1ea7n l\u1ed9t x\u00e1c, s\u00e2u t\u1eb1m b\u01b0\u1edbc v\u00e0o giai \u0111o\u1ea1n nh\u1ed9ng. \u0110\u00e2y l\u00e0 giai \u0111o\u1ea1n bi\u1ebfn th\u00e1i ho\u00e0n to\u00e0n, c\u01a1 th\u1ec3 s\u00e2u t\u1eb1m s\u1ebd tr\u1ea3i qua nh\u1eefng thay \u0111\u1ed5i s\u00e2u s\u1eafc \u0111\u1ec3 tr\u1edf th\u00e0nh m\u1ed9t con b\u01b0\u1edbm.  K\u00e9n \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t l\u1edbp \u00e1o gi\u00e1p, b\u1ea3o v\u1ec7 nh\u1ed9ng kh\u1ecfi c\u00e1c t\u00e1c nh\u00e2n g\u00e2y h\u1ea1i t\u1eeb m\u00f4i tr\u01b0\u1eddng nh\u01b0 \u0111\u1ed9ng v\u1eadt \u0103n th\u1ecbt, th\u1eddi ti\u1ebft kh\u1eafc nghi\u1ec7t (gi\u00f3, m\u01b0a, n\u1eafng g\u1eaft), v\u00e0 c\u00e1c m\u1ea7m b\u1ec7nh.  V\u1ecf k\u00e9n c\u1ee9ng c\u00e1p, \u0111\u01b0\u1ee3c c\u1ea5u t\u1ea1o t\u1eeb s\u1ee3i t\u01a1 t\u1eb1m ch\u1eafc ch\u1eafn, t\u1ea1o ra m\u1ed9t kh\u00f4ng gian k\u00edn \u0111\u00e1o v\u00e0 an to\u00e0n cho qu\u00e1 tr\u00ecnh bi\u1ebfn th\u00e1i di\u1ec5n ra.<\/p>\n<h3>2. T\u01a1 t\u1eb1m: V\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng ho\u00e0n h\u1ea3o<\/h3>\n<p>S\u00e2u t\u1eb1m ti\u1ebft ra t\u01a1 t\u1eeb tuy\u1ebfn t\u01a1 n\u1eb1m trong c\u01a1 th\u1ec3 ch\u00fang. T\u01a1 n\u00e0y l\u00e0 m\u1ed9t lo\u1ea1i protein s\u1ee3i, \u0111\u01b0\u1ee3c c\u1ea5u t\u1ea1o b\u1edfi hai lo\u1ea1i fibroin ch\u00ednh l\u00e0 fibroin H v\u00e0 fibroin L, k\u1ebft h\u1ee3p v\u1edbi m\u1ed9t lo\u1ea1i glycoprotein g\u1ecdi l\u00e0 sericin.  Sericin \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t ch\u1ea5t k\u1ebft d\u00ednh, gi\u00fap c\u00e1c s\u1ee3i fibroin li\u00ean k\u1ebft v\u1edbi nhau t\u1ea1o th\u00e0nh m\u1ed9t c\u1ea5u tr\u00fac v\u1eefng ch\u1eafc.  S\u1ef1 k\u1ebft h\u1ee3p \u0111\u1eb7c bi\u1ec7t n\u00e0y t\u1ea1o n\u00ean \u0111\u1ed9 b\u1ec1n, \u0111\u1ed9 \u0111\u00e0n h\u1ed3i, v\u00e0 \u0111\u1ed9 b\u00f3ng m\u01b0\u1ee3t \u0111\u1eb7c tr\u01b0ng c\u1ee7a t\u01a1 t\u1eb1m.  Vi\u1ec7c t\u1ea1o ra k\u00e9n l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh ph\u1ee9c t\u1ea1p, \u0111\u00f2i h\u1ecfi s\u1ef1 ph\u1ed1i h\u1ee3p ch\u00ednh x\u00e1c gi\u1eefa c\u00e1c tuy\u1ebfn t\u01a1 v\u00e0 c\u00e1c c\u01a1 v\u1eadn \u0111\u1ed9ng c\u1ee7a s\u00e2u t\u1eb1m.  S\u00e2u t\u1eb1m ti\u1ebft t\u01a1 li\u00ean t\u1ee5c, xoay tr\u00f2n m\u1ed9t c\u00e1ch c\u00f3 h\u1ec7 th\u1ed1ng \u0111\u1ec3 t\u1ea1o n\u00ean h\u00ecnh d\u1ea1ng k\u00e9n.<\/p>\n<h3>3. B\u1ea3o v\u1ec7 kh\u1ecfi k\u1ebb th\u00f9<\/h3>\n<p>K\u00e9n kh\u00f4ng ch\u1ec9 b\u1ea3o v\u1ec7 nh\u1ed9ng kh\u1ecfi c\u00e1c t\u00e1c nh\u00e2n m\u00f4i tr\u01b0\u1eddng, m\u00e0 c\u00f2n l\u00e0 m\u1ed9t h\u00e0ng r\u00e0o b\u1ea3o v\u1ec7 kh\u1ecfi nh\u1eefng k\u1ebb s\u0103n m\u1ed3i.  Nhi\u1ec1u lo\u00e0i \u0111\u1ed9ng v\u1eadt, nh\u01b0 chim, ki\u1ebfn, ho\u1eb7c c\u00e1c lo\u00e0i c\u00f4n tr\u00f9ng kh\u00e1c, coi s\u00e2u t\u1eb1m v\u00e0 nh\u1ed9ng l\u00e0 ngu\u1ed3n th\u1ee9c \u0103n.  K\u00e9n c\u1ee9ng c\u00e1p gi\u00fap ng\u0103n c\u1ea3n s\u1ef1 t\u1ea5n c\u00f4ng c\u1ee7a nh\u1eefng k\u1ebb s\u0103n m\u1ed3i n\u00e0y, t\u0103ng kh\u1ea3 n\u0103ng s\u1ed1ng s\u00f3t c\u1ee7a nh\u1ed9ng cho \u0111\u1ebfn khi b\u01b0\u1edbm tr\u01b0\u1edfng th\u00e0nh \u0111\u1ee7 m\u1ea1nh \u0111\u1ec3 tho\u00e1t ra.  Th\u1eadm ch\u00ed, m\u00e0u s\u1eafc v\u00e0 k\u1ebft c\u1ea5u c\u1ee7a k\u00e9n c\u0169ng c\u00f3 th\u1ec3 \u0111\u00f3ng vai tr\u00f2 ng\u1ee5y trang, gi\u00fap ch\u00fang kh\u00f3 b\u1ecb ph\u00e1t hi\u1ec7n h\u01a1n.<\/p>\n<h3>4. Chu k\u1ef3 s\u1ed1ng v\u00e0 s\u1ef1 sinh s\u1ea3n<\/h3>\n<p>Vi\u1ec7c t\u1ea1o k\u00e9n l\u00e0 m\u1ed9t ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu trong chu k\u1ef3 s\u1ed1ng c\u1ee7a s\u00e2u t\u1eb1m.  Sau khi b\u01b0\u1edbm tr\u01b0\u1edfng th\u00e0nh chui ra kh\u1ecfi k\u00e9n, ch\u00fang s\u1ebd giao ph\u1ed1i v\u00e0 \u0111\u1ebb tr\u1ee9ng, b\u1eaft \u0111\u1ea7u m\u1ed9t v\u00f2ng \u0111\u1eddi m\u1edbi.  N\u1ebfu kh\u00f4ng c\u00f3 k\u00e9n, giai \u0111o\u1ea1n nh\u1ed9ng s\u1ebd r\u1ea5t d\u1ec5 b\u1ecb t\u1ed5n th\u01b0\u01a1ng, d\u1eabn \u0111\u1ebfn t\u1ef7 l\u1ec7 t\u1eed vong cao v\u00e0 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ef1 sinh s\u1ea3n c\u1ee7a lo\u00e0i.<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Giai \u0111o\u1ea1n ph\u00e1t tri\u1ec3n<\/th>\n<th>M\u00f4 t\u1ea3<\/th>\n<th>Vai tr\u00f2 c\u1ee7a k\u00e9n<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>S\u00e2u t\u1eb1m<\/td>\n<td>\u0102n l\u00e1 d\u00e2u, ph\u00e1t tri\u1ec3n c\u01a1 th\u1ec3<\/td>\n<td>Kh\u00f4ng c\u1ea7n k\u00e9n<\/td>\n<\/tr>\n<tr>\n<td>Nh\u1ed9ng<\/td>\n<td>Bi\u1ebfn th\u00e1i th\u00e0nh b\u01b0\u1edbm<\/td>\n<td>B\u1ea3o v\u1ec7 kh\u1ecfi t\u00e1c nh\u00e2n b\u00ean ngo\u00e0i, t\u1ea1o m\u00f4i tr\u01b0\u1eddng an to\u00e0n<\/td>\n<\/tr>\n<tr>\n<td>B\u01b0\u1edbm<\/td>\n<td>Sinh s\u1ea3n, \u0111\u1ebb tr\u1ee9ng<\/td>\n<td>Kh\u00f4ng c\u1ea7n k\u00e9n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>K\u1ebft lu\u1eadn:  Vi\u1ec7c s\u00e2u t\u1eb1m t\u1ea1o ra k\u00e9n kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 \u0111\u1ec3 s\u1ea3n xu\u1ea5t t\u01a1, m\u00e0 c\u00f2n l\u00e0 m\u1ed9t c\u01a1 ch\u1ebf s\u1ed1ng c\u00f2n quan tr\u1ecdng gi\u00fap b\u1ea3o v\u1ec7 nh\u1ed9ng trong giai \u0111o\u1ea1n bi\u1ebfn th\u00e1i, t\u0103ng kh\u1ea3 n\u0103ng s\u1ed1ng s\u00f3t v\u00e0 duy tr\u00ec s\u1ef1 sinh s\u1ea3n c\u1ee7a lo\u00e0i.  K\u00e9n l\u00e0 minh ch\u1ee9ng cho s\u1ef1 k\u1ef3 di\u1ec7u c\u1ee7a t\u1ef1 nhi\u00ean v\u00e0 s\u1ef1 th\u00edch nghi ho\u00e0n h\u1ea3o c\u1ee7a sinh v\u1eadt \u0111\u1ec3 t\u1ed3n t\u1ea1i v\u00e0 ph\u00e1t tri\u1ec3n.  M\u1eb7c d\u00f9 con ng\u01b0\u1eddi thu ho\u1ea1ch k\u00e9n \u0111\u1ec3 s\u1ea3n xu\u1ea5t t\u01a1 t\u1eb1m, m\u1ed9t s\u1ea3n ph\u1ea9m qu\u00fd gi\u00e1, nh\u01b0ng ch\u00fang ta c\u0169ng c\u1ea7n \u00fd th\u1ee9c \u0111\u01b0\u1ee3c t\u1ea7m quan tr\u1ecdng c\u1ee7a k\u00e9n \u0111\u1ed1i v\u1edbi chu k\u1ef3 s\u1ed1ng c\u1ee7a s\u00e2u t\u1eb1m v\u00e0 b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng s\u1ed1ng c\u1ee7a ch\u00fang.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>T\u01a1 t\u1eb1m, m\u1ed9t ch\u1ea5t li\u1ec7u m\u1ec1m m\u1ea1i, \u00f3ng \u00e1nh v\u00e0 sang tr\u1ecdng, \u0111\u01b0\u1ee3c t\u1ea1o ra t\u1eeb nh\u1eefng chi\u1ebfc k\u00e9n nh\u1ecf b\u00e9 do s\u00e2u t\u1eb1m s\u1ea3n xu\u1ea5t. Nh\u01b0ng t\u1ea1i sao s\u00e2u t\u1eb1m l\u1ea1i c\u1ea7n ph\u1ea3i t\u1ea1o ra nh\u1eefng chi\u1ebfc k\u00e9n n\u00e0y? C\u00e2u tr\u1ea3 l\u1eddi kh\u00f4ng \u0111\u01a1n gi\u1ea3n ch\u1ec9 l\u00e0 \u0111\u1ec3 t\u1ea1o ra t\u01a1, m\u00e0 c\u00f2n li\u00ean<\/p>\n","protected":false},"author":1,"featured_media":89672,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[37755],"tags":[],"class_list":["post-111273","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sericulture-vi","prodpage-classic"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.pandasilk.com\/vi\/wp-json\/wp\/v2\/posts\/111273","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pandasilk.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pandasilk.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pandasilk.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pandasilk.com\/vi\/wp-json\/wp\/v2\/comments?post=111273"}],"version-history":[{"count":0,"href":"https:\/\/www.pandasilk.com\/vi\/wp-json\/wp\/v2\/posts\/111273\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.pandasilk.com\/vi\/wp-json\/wp\/v2\/media\/89672"}],"wp:attachment":[{"href":"https:\/\/www.pandasilk.com\/vi\/wp-json\/wp\/v2\/media?parent=111273"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pandasilk.com\/vi\/wp-json\/wp\/v2\/categories?post=111273"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pandasilk.com\/vi\/wp-json\/wp\/v2\/tags?post=111273"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}