{"id":12797,"date":"2019-06-11T08:30:40","date_gmt":"2019-06-11T13:30:40","guid":{"rendered":"https:\/\/www.insta-pro.com\/?p=12797"},"modified":"2019-06-11T08:37:11","modified_gmt":"2019-06-11T13:37:11","slug":"la-lysine-reactive-pour-tester-la-qualite-du-soja","status":"publish","type":"post","link":"https:\/\/instapro.spinuhost.com\/fr\/blog\/nutrition-et-technologies\/la-lysine-reactive-pour-tester-la-qualite-du-soja\/","title":{"rendered":"La lysine r\u00e9active pour tester la qualit\u00e9 du soja"},"content":{"rendered":"<p>La lysine est le premier acide amin\u00e9 limitant dans les r\u00e9gimes alimentaires des porcs et le second facteur limitant pour les volailles. La lysine sert de r\u00e9f\u00e9rence pour ajuster la proportion des autres acides amin\u00e9s dans les r\u00e9gimes de ces animaux. Elle d\u00e9termine par cons\u00e9quent les performances. Les animaux monogastriques ne sont pas capables de synth\u00e9tiser la lysine, raison pour laquelle ils doivent absorber cet acide amin\u00e9 essentiel \u00e0 travers les sources de prot\u00e9ines de leur alimentation.<\/p>\n<p>Dans les faits, il est n\u00e9cessaire de faire subir un traitement thermique au tourteau de soja lorsqu\u2019on l\u2019inclut dans la nourriture pour animaux, afin d\u2019inactiver les facteurs antinutritionnels.\u00a0 Apr\u00e8s le traitement thermique, une analyse en laboratoire est effectu\u00e9e pour d\u00e9terminer la teneur en facteurs anti-nutritionnels.\u00a0 Leur r\u00e9duction d\u00e9pend de la temp\u00e9rature et de la dur\u00e9e du traitement thermique. Si la temp\u00e9rature est trop \u00e9lev\u00e9e pendant le traitement ou si le traitement thermique est trop long, le soja devient brun\u00e2tre.\u00a0 Cela provoque une r\u00e9action de Maillard et donne lieu \u00e0 des complexes lysine-sucres insolubles qui endommagent la lysine.<\/p>\n<p>Des <a href=\"https:\/\/www.researchgate.net\/publication\/267209225_Methods_for_determination_reactive_lysine_in_heat-treated_foods_and_feeds\">m\u00e9thodes<\/a> pr\u00e9cises ont \u00e9t\u00e9 d\u00e9velopp\u00e9es pour d\u00e9terminer la quantit\u00e9 de lysine r\u00e9active, qui indique la quantit\u00e9 de lysine disponible pour les animaux. Ainsi, on consid\u00e8re que le moyen le plus pr\u00e9cis de d\u00e9terminer quel est le traitement optimal du soja consiste \u00e0 effectuer des essais d\u2019alimentation sur des animaux afin de d\u00e9terminer la quantit\u00e9 de lysine digestible et les performances. Ces essais devraient servir de r\u00e9f\u00e9rence pour comparer la qualit\u00e9 des divers produits. Par exemple, des \u00e9tudes ont \u00e9t\u00e9 men\u00e9es pour pr\u00e9dire la quantit\u00e9 de lysine r\u00e9active dans la fraction prot\u00e9ique non d\u00e9gradable dans le rumen (RUP) ou de prot\u00e9ines bypass dans le tourteau de soja pour les <a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pubmed\/?term=reactive+lysine+dairy+cows\">ruminants<\/a>, disponible pour la production de lait.<\/p>\n<p>Vous vous demandez peut-\u00eatre quelle est l\u2019utilit\u00e9 des tests de laboratoire pour conna\u00eetre les valeurs de lysine r\u00e9active\u00a0? \u00a0Les donn\u00e9es du dosage de la lysine r\u00e9active peuvent servir \u00e0 prendre des d\u00e9cisions sens\u00e9es au sujet du tourteau de soja apr\u00e8s traitement thermique. Par exemple, il a \u00e9t\u00e9 <a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pubmed\/23365308\">d\u00e9montr\u00e9<\/a> qu\u2019un traitement thermique excessif par autoclavage r\u00e9duit \u00e0 la fois la teneur en lysine totale du tourteau de soja et sa digestibilit\u00e9 (de 27,5 \u00e0 19,2\u00a0g\/kg). Cela vaut \u00e9galement pour la lysine r\u00e9active (de 23,4 \u00e0 11,7\u00a0g\/kg). Les performances des animaux sont compromises lorsque ces prot\u00e9ines endommag\u00e9es sont incluses dans les r\u00e9gimes alimentaires. En outre, l\u2019estimation de la lysine r\u00e9active peut repr\u00e9senter un outil facultatif pour d\u00e9terminer dans quelle mesure l\u2019acide amin\u00e9 ajout\u00e9 au r\u00e9gime est hautement digestible et utile \u00e0 la production et aux autres fonctions de l\u2019organisme.<\/p>\n<p>Des recherches suppl\u00e9mentaires sont n\u00e9cessaires pour comprendre comment les teneurs en lysine r\u00e9active de divers ingr\u00e9dients de l\u2019alimentation animale sont recherch\u00e9es dans le cadre du contr\u00f4le de la qualit\u00e9 apr\u00e8s traitement. \u00c0 l\u2019avenir, le fait de d\u00e9terminer les quantit\u00e9s de lysine r\u00e9active peut constituer un indicateur suppl\u00e9mentaire de la qualit\u00e9, avant de proc\u00e9der \u00e0 des \u00e9tudes sur des animaux.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La lysine est le premier acide amin\u00e9 limitant dans les r\u00e9gimes alimentaires des porcs et le second facteur limitant pour les volailles. La lysine sert de r\u00e9f\u00e9rence pour ajuster la proportion des autres acides amin\u00e9s dans les r\u00e9gimes de ces animaux. Elle d\u00e9termine par cons\u00e9quent les performances. Les animaux monogastriques ne sont pas capables de [&hellip;]<\/p>\n","protected":false},"author":40,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[7181],"tags":[6655,6656],"class_list":["post-12797","post","type-post","status-publish","format-standard","hentry","category-nutrition-et-technologies","tag-lysine-reactive-fr","tag-qualite-du-soja-fr"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.2 (Yoast SEO v27.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>La lysine r\u00e9active pour tester la qualit\u00e9 du soja - Insta-Pro<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/instapro.spinuhost.com\/fr\/blog\/nutrition-et-technologies\/la-lysine-reactive-pour-tester-la-qualite-du-soja\/\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/instapro.spinuhost.com\/fr\/blog\/nutrition-et-technologies\/la-lysine-reactive-pour-tester-la-qualite-du-soja\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/instapro.spinuhost.com\/fr\/blog\/nutrition-et-technologies\/la-lysine-reactive-pour-tester-la-qualite-du-soja\/\"},\"author\":{\"name\":\"Janeth Colina\",\"@id\":\"https:\/\/insta-pro.spinudev.com\/en\/#\/schema\/person\/61b0523c67060ffe92e23fda00b07db6\"},\"headline\":\"La lysine r\u00e9active pour tester la qualit\u00e9 du soja\",\"datePublished\":\"2019-06-11T13:30:40+00:00\",\"dateModified\":\"2019-06-11T13:37:11+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/instapro.spinuhost.com\/fr\/blog\/nutrition-et-technologies\/la-lysine-reactive-pour-tester-la-qualite-du-soja\/\"},\"wordCount\":566,\"publisher\":{\"@id\":\"https:\/\/insta-pro.spinudev.com\/en\/#organization\"},\"keywords\":[\"Lysine r\u00e9active\",\"Qualit\u00e9 du soja\"],\"articleSection\":[\"Nutrition et Technologies\"],\"inLanguage\":\"fr-FR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/instapro.spinuhost.com\/fr\/blog\/nutrition-et-technologies\/la-lysine-reactive-pour-tester-la-qualite-du-soja\/\",\"url\":\"https:\/\/instapro.spinuhost.com\/fr\/blog\/nutrition-et-technologies\/la-lysine-reactive-pour-tester-la-qualite-du-soja\/\",\"name\":\"La lysine r\u00e9active pour tester la qualit\u00e9 du soja - 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