{"id":10958,"date":"2022-05-21T09:37:53","date_gmt":"2022-05-21T08:37:53","guid":{"rendered":"https:\/\/semexpkbb.com\/?p=10958"},"modified":"2026-02-18T09:24:58","modified_gmt":"2026-02-18T08:24:58","slug":"a-hostressz-hatasa-a-tejtermelesre-es-a-tej-minosegere","status":"publish","type":"post","link":"https:\/\/semexpkbb.com\/hu\/a-hostressz-hatasa-a-tejtermelesre-es-a-tej-minosegere\/","title":{"rendered":"A h\u0151stressz hat\u00e1sa a tejtermel\u00e9sre \u00e9s a tej min\u0151s\u00e9g\u00e9re"},"content":{"rendered":"<p><a href=\"https:\/\/semexpkbb.com\/2022\/05\/21\/indeks-temperature-i-vlaznosti-vazduha\/\"><strong>El\u0151z\u0151 \u00edr\u00e1s.<\/strong><\/a> A napi tejtermel\u00e9st jelent\u0151s m\u00e9rt\u00e9kben befoly\u00e1solj\u00e1k a klimatikus v\u00e1ltoz\u00e1sok. A megemelkedett h\u0151m\u00e9rs\u00e9klet \u00e9s p\u00e1ratartalom sz\u00e1mottev\u0151 termel\u00e9scs\u00f6kken\u00e9st okoz, amely kisz\u00e1m\u00edthat\u00f3 a Berry \u00e9s mtsai (1964) \u00e1ltal javasolt k\u00e9plet seg\u00edts\u00e9g\u00e9vel:<\/p>\n<p><!--more--><\/p>\n<p><strong><em>Termel\u00e9scs\u00f6kken\u00e9s (kg\/nap) = -1,075 &#8211; 1,736 \u00d7 NL + 0,02474 \u00d7 NL \u00d7 THI<\/em><\/strong><\/p>\n<p>NL \u2013 norm\u00e1l napi termel\u00e9s 10\u201318 \u00b0C h\u0151m\u00e9rs\u00e9kleten<\/p>\n<p>THI \u2013 a napi \u00e1tlagos h\u0151m\u00e9rs\u00e9klet\u2013p\u00e1ratartalom index<\/p>\n<p>A k\u00e9pletb\u0151l egy\u00e9rtelm\u0171, hogy a termel\u00e9s cs\u00f6kken a THI-index emelked\u00e9s\u00e9vel (72-r\u0151l 80-ra), k\u00fcl\u00f6n\u00f6sen a napi 15\u201340 liter tejet termel\u0151 tehenek eset\u00e9ben. Ez m\u00e9g nyilv\u00e1nval\u00f3bb, ha a termel\u00e9scs\u00f6kken\u00e9st sz\u00e1zal\u00e9kban fejezz\u00fck ki (1. \u00e1bra).<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-5115 aligncenter\" src=\"https:\/\/semexpkbb.com\/wp-content\/uploads\/2026\/02\/graph01.jpg\" alt=\"\" width=\"492\" height=\"322\" \/><\/p>\n<p>K\u00e9t teh\u00e9ncsoporttal \u2013 az egyik h\u0151stressz alatt, a m\u00e1sik komfortz\u00f3n\u00e1ban \u2013 v\u00e9gzett vizsg\u00e1latok bizony\u00edtott\u00e1k, hogy a cs\u00f6kkent tejtermel\u00e9s nem csup\u00e1n a takarm\u00e1nyfelv\u00e9tel cs\u00f6kken\u00e9s\u00e9nek k\u00f6vetkezm\u00e9nye. A THI minden egyes egys\u00e9gnyi n\u00f6veked\u00e9se 0,27 kg\/nap tejvesztes\u00e9get eredm\u00e9nyez.<\/p>\n<p><strong>A h\u0151stressz tej\u00f6sszetev\u0151kre gyakorolt hat\u00e1sa a k\u00f6vetkez\u0151:<\/strong><\/p>\n<ul>\n<li>A tej zs\u00edrtartalm\u00e1ra gyakorolt hat\u00e1s nem teljesen egy\u00e9rtelm\u0171. Sz\u00e1mos megfigyel\u00e9s szerint a zs\u00edrtartalom cs\u00f6kken a ny\u00e1ri h\u00f3napokban, ugyanakkor vannak adatok, amelyek nem mutatnak jelent\u0151s k\u00fcl\u00f6nbs\u00e9get a meleg \u00e9s a hideg id\u0151szak k\u00f6z\u00f6tt.<\/li>\n<li>A h\u0151stressz nem befoly\u00e1solja a tej lakt\u00f3ztartalm\u00e1t.<\/li>\n<li>A tej feh\u00e9rjetartalma \u2013 mind a kazein, mind a sav\u00f3feh\u00e9rj\u00e9k \u2013 cs\u00f6kken h\u0151stressz hat\u00e1s\u00e1ra. 75 feletti THI eset\u00e9n a tej pH-\u00e9rt\u00e9ke emelkedik, ami k\u00f6zvetlen\u00fcl befoly\u00e1solja a sajt kihozatal\u00e1t \u00e9s min\u0151s\u00e9g\u00e9t.<\/li>\n<\/ul>\n<p><strong>K\u00f6vetkeztet\u00e9s<\/strong><\/p>\n<p>A h\u0151stressz jelent\u0151s hat\u00e1ssal van az \u00e1llatok j\u00f3l\u00e9t\u00e9re \u00e9s termel\u00e9s\u00e9re. Meleg \u00e9s p\u00e1r\u00e1s k\u00f6r\u00fclm\u00e9nyek k\u00f6z\u00f6tt a tejel\u0151 tehenek kevesebb \u00e9s gyeng\u00e9bb min\u0151s\u00e9g\u0171 tejet termelnek, k\u00fcl\u00f6n\u00f6sen akkor, ha a tejet sajtk\u00e9sz\u00edt\u00e9sre haszn\u00e1lj\u00e1k. A h\u0151stressz szintj\u00e9nek meghat\u00e1roz\u00e1s\u00e1ra vil\u00e1gszerte a THI-indexet alkalmazz\u00e1k, amely korl\u00e1tai ellen\u00e9re tov\u00e1bbra is a legjobb mutat\u00f3 a magas h\u0151m\u00e9rs\u00e9klet \u00e9s p\u00e1ratartalom szarvasmarh\u00e1kra gyakorolt hat\u00e1s\u00e1nak \u00e9rt\u00e9kel\u00e9s\u00e9re.<\/p>\n<p>A h\u0151stressz negat\u00edvan befoly\u00e1solja a tejel\u0151 tehenek reprodukci\u00f3j\u00e1t is \u2013 ez lesz a k\u00f6vetkez\u0151 \u00edr\u00e1s egyik t\u00e9m\u00e1ja. A k\u00f6vetkez\u0151 cikk a h\u0151stressz h\u00edz\u00f3marha-termel\u00e9sre gyakorolt hat\u00e1s\u00e1val foglalkozik.<\/p>\n<p>Ford\u00edtotta \u00e9s adapt\u00e1lta:<br \/>\nKatarina \u0160olaja<br \/>\n2022. \u00e1prilis<\/p>\n","protected":false},"excerpt":{"rendered":"<p>El\u0151z\u0151 \u00edr\u00e1s. A napi tejtermel\u00e9st jelent\u0151s m\u00e9rt\u00e9kben befoly\u00e1solj\u00e1k a klimatikus v\u00e1ltoz\u00e1sok. A megemelkedett h\u0151m\u00e9rs\u00e9klet \u00e9s p\u00e1ratartalom sz\u00e1mottev\u0151 termel\u00e9scs\u00f6kken\u00e9st okoz, amely kisz\u00e1m\u00edthat\u00f3 a Berry \u00e9s mtsai (1964) \u00e1ltal javasolt k\u00e9plet seg\u00edts\u00e9g\u00e9vel:<\/p>\n","protected":false},"author":1,"featured_media":10957,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[39],"tags":[],"class_list":["post-10958","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-takarmanyozas"],"_links":{"self":[{"href":"https:\/\/semexpkbb.com\/hu\/wp-json\/wp\/v2\/posts\/10958","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/semexpkbb.com\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/semexpkbb.com\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/semexpkbb.com\/hu\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/semexpkbb.com\/hu\/wp-json\/wp\/v2\/comments?post=10958"}],"version-history":[{"count":1,"href":"https:\/\/semexpkbb.com\/hu\/wp-json\/wp\/v2\/posts\/10958\/revisions"}],"predecessor-version":[{"id":10959,"href":"https:\/\/semexpkbb.com\/hu\/wp-json\/wp\/v2\/posts\/10958\/revisions\/10959"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/semexpkbb.com\/hu\/wp-json\/wp\/v2\/media\/10957"}],"wp:attachment":[{"href":"https:\/\/semexpkbb.com\/hu\/wp-json\/wp\/v2\/media?parent=10958"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/semexpkbb.com\/hu\/wp-json\/wp\/v2\/categories?post=10958"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/semexpkbb.com\/hu\/wp-json\/wp\/v2\/tags?post=10958"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}