{"id":3709,"date":"2015-04-16T13:17:41","date_gmt":"2015-04-16T18:17:41","guid":{"rendered":"https:\/\/www.insta-pro.com\/fr\/2015\/12\/de-limportance-de-la-digestibilite-des-acides-amines\/"},"modified":"2015-12-04T07:54:55","modified_gmt":"2015-12-04T13:54:55","slug":"de-limportance-de-la-digestibilite-des-acides-amines","status":"publish","type":"post","link":"https:\/\/instapro.spinuhost.com\/fr\/blog\/nutrition-et-technologies\/de-limportance-de-la-digestibilite-des-acides-amines\/","title":{"rendered":"De l\u2019importance de la digestibilit\u00e9 des acides amin\u00e9s"},"content":{"rendered":"<p><a href=\"http:\/\/blog.insta-pro.com-content\/uploads\/2012\/09\/bigstock-Little-Chick-Eating-From-Hand-5362397small.jpg.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-522 size-full\" src=\"http:\/\/blog.insta-pro.com-content\/uploads\/2012\/09\/bigstock-Little-Chick-Eating-From-Hand-5362397small.jpg.jpg\" alt=\"\" width=\"300\" height=\"200\" \/><\/a><\/p>\n<p>La digestibilit\u00e9 des acides amin\u00e9s s\u2019est r\u00e9v\u00e9l\u00e9 un sujet appr\u00e9ci\u00e9 dans mes pr\u00e9c\u00e9dents <a href=\"http:\/\/blog.insta-pro.com\/2014\/05\/06\/quality-ingredients-a-consistent-source-of-highly-digestible-nutrients\/\">blogs<\/a> et dans les <a href=\"http:\/\/www.zootecnicainternational.com\/article-archive\/nutrition\/283-standardised-ileal-digestibility-proposal-for-a-new-system-to-describe-amino-acid-digestibility-of-feed-ingredients-for-poultry.html\">revues professionnelles<\/a>&#160;; c\u2019est un indicateur important de la qualit\u00e9 des prot\u00e9ines, une haute digestibilit\u00e9 \u00e9tant meilleure.&#160; N\u00e9anmoins, que signifient ces valeurs et \u00e0 quel point les diff\u00e9rences de digestibilit\u00e9 sont-elles importantes en pratique&#160;?<\/p>\n<p>Les animaux de rente consomment des <a href=\"http:\/\/en.wikipedia.org\/wiki\/Protein\">prot\u00e9ines<\/a> dans leur alimentation quotidienne. Les prot\u00e9ines sont g\u00e9n\u00e9ralement apport\u00e9es par les <a href=\"http:\/\/en.wikipedia.org\/wiki\/Food_grain\">c\u00e9r\u00e9ales<\/a> et les <a href=\"http:\/\/en.wikipedia.org\/wiki\/Vegetable_oil\">ol\u00e9agineux<\/a>, mais on peut \u00e9galement utiliser des ingr\u00e9dients d\u2019origine animale.&#160; Une prot\u00e9ine est constitu\u00e9e d\u2019une longue cha\u00eene d\u2019<a href=\"http:\/\/en.wikipedia.org\/wiki\/Amino_acid\">acides amin\u00e9s<\/a>, les composants de toutes les prot\u00e9ines&#160;; c\u2019est valable pour les prot\u00e9ines dans la viande, le lait, les \u0153ufs et les fibres animales, comme la laine.&#160; Les animaux doivent d\u00e9composer les prot\u00e9ines intactes de leur alimentation, absorber les acides amin\u00e9s par la paroi intestinale vers la circulation sanguine, puis utiliser ces \u00e9l\u00e9ments pour fabriquer les prot\u00e9ines de leurs diff\u00e9rents tissus.&#160; Si ces \u00e9l\u00e9ments ne sont pas pr\u00e9sents dans les quantit\u00e9s et avec la r\u00e9partition ad\u00e9quates, alors la synth\u00e8se des prot\u00e9ines ne sera pas maximale, et les performances des animaux, mesur\u00e9es en gain de poids, seront r\u00e9duites.<\/p>\n<p>Le probl\u00e8me survient lorsque moins de 100&#160;% des acides amin\u00e9s dans les ingr\u00e9dients de l\u2019alimentation sont disponibles \u00e0 des fins productives.&#160; C\u2019est ce que le crit\u00e8re de digestibilit\u00e9 vise&#160;: estimer le pourcentage de chaque acide amin\u00e9 disponible pour la fabrication des prot\u00e9ines.&#160; Diff\u00e9rents mod\u00e8les animaux ont \u00e9t\u00e9 d\u00e9velopp\u00e9s pour mesurer la digestibilit\u00e9 (voir <a href=\"http:\/\/cvi.asm.org\/content\/16\/4\/453\/F1.expansion.html\">ici<\/a> par exemple).<\/p>\n<p>La complexit\u00e9 est d\u2019autant plus importante que la digestibilit\u00e9 varie en fonction de l\u2019ingr\u00e9dient en question, des conditions d\u2019\u00e9levage, de la composition d\u2019autres nutriments dans l\u2019ingr\u00e9dient et du r\u00e9gime alimentaire, de l\u2019\u00e2ge des animaux, des facteurs g\u00e9n\u00e9tiques et du niveau de production, du <a href=\"http:\/\/blog.insta-pro.com\/2015\/03\/26\/producing-animal-proteins-in-hot-climates\/\">climat<\/a> et des conditions de transformation des ingr\u00e9dients.<\/p>\n<p>J\u2019avais <a href=\"http:\/\/blog.insta-pro.com\/\">publi\u00e9 sur le blog <\/a>\u00e0 propos des conditions de transformation li\u00e9es \u00e0 <a href=\"https:\/\/www.insta-pro.com\">nos<\/a> \u00e9quipements, qui donnent une meilleure qualit\u00e9 pour les ingr\u00e9dients \u00e0 base de soja (voir <a href=\"http:\/\/blog.insta-pro.com\/2014\/05\/06\/quality-ingredients-a-consistent-source-of-highly-digestible-nutrients\/\">ici<\/a> et <a href=\"http:\/\/blog.insta-pro.com\/2014\/04\/29\/express-the-genetic-potential-of-your-animals\/\">ici<\/a>), et \u00e0 propos des effets positifs de l\u2019<a href=\"https:\/\/www.insta-pro.com\/products-services\/extruders.html\">extrusion<\/a> sur les niveaux d\u2019\u00e9nergie disponible dans les ingr\u00e9dients (voir <a href=\"http:\/\/blog.insta-pro.com\/2013\/09\/10\/all-energy-sources-are-not-created-equal\/\">ici<\/a> et <a href=\"http:\/\/blog.insta-pro.com\/2013\/06\/18\/energy-in-performance-out\/\">ici<\/a>). &#160;Mais qu\u2019est-ce que cela implique au niveau de la formulation des aliments&#160;?<\/p>\n<p>J\u2019ai r\u00e9cemment mis au point les formulations d\u2019alimentation suivantes pour l\u2019un de nos clients potentiels&#160;:<\/p>\n<table width=\"696\">\n<tbody>\n<tr>\n<td width=\"269\">D\u00e9marrage poulets (0-7&#160;j), Cobb<\/td>\n<td width=\"269\">SBM + huile<\/td>\n<td width=\"269\">ExPress \u00ae<\/td>\n<\/tr>\n<tr>\n<td width=\"269\">Ma\u00efs<\/td>\n<td width=\"269\">44&#160;%<\/td>\n<td width=\"269\">52&#160;%<\/td>\n<\/tr>\n<tr>\n<td width=\"269\">Tourteau de soja obtenu avec solvant (SBM &#8211; Solvent Soybean Meal)<\/td>\n<td width=\"269\">46&#160;%<\/td>\n<td width=\"269\">0&#160;%<\/td>\n<\/tr>\n<tr>\n<td width=\"269\">Huile v\u00e9g\u00e9tale<\/td>\n<td width=\"269\">6&#160;%<\/td>\n<td width=\"269\">0&#160;%<\/td>\n<\/tr>\n<tr>\n<td width=\"269\">Tourteau de soja ExPress \u00ae<\/td>\n<td width=\"269\">0&#160;%<\/td>\n<td width=\"269\">44&#160;%<\/td>\n<\/tr>\n<tr>\n<td width=\"269\">Phosphate dicalcique<\/td>\n<td width=\"269\">1,9&#160;%<\/td>\n<td width=\"269\">1,9&#160;%<\/td>\n<\/tr>\n<tr>\n<td width=\"269\">Calcaire<\/td>\n<td width=\"269\">1,4&#160;%<\/td>\n<td width=\"269\">1,4&#160;%<\/td>\n<\/tr>\n<tr>\n<td width=\"269\">Sel<\/td>\n<td width=\"269\">0,5&#160;%<\/td>\n<td width=\"269\">0,5&#160;%<\/td>\n<\/tr>\n<tr>\n<td width=\"269\">DL-m\u00e9thionine<\/td>\n<td width=\"269\">0&#160;%<\/td>\n<td width=\"269\">0&#160;%<\/td>\n<\/tr>\n<tr>\n<td width=\"269\">L-lysine<\/td>\n<td width=\"269\">0&#160;%<\/td>\n<td width=\"269\">0&#160;%<\/td>\n<\/tr>\n<tr>\n<td width=\"269\">Pr\u00e9-m\u00e9lange min\u00e9raux\/vitamines<\/td>\n<td width=\"269\">0,2&#160;%<\/td>\n<td width=\"269\">0,2&#160;%<\/td>\n<\/tr>\n<tr>\n<td width=\"269\"><em>TOTAL<\/em><\/td>\n<td width=\"269\"><em>100&#160;%<\/em><\/td>\n<td width=\"269\">100&#160;%<\/td>\n<\/tr>\n<tr>\n<td width=\"269\">EM (kcal\/kg)<\/td>\n<td width=\"269\">3&#160;120<\/td>\n<td width=\"269\">3&#160;120<\/td>\n<\/tr>\n<tr>\n<td width=\"269\">Prot\u00e9ines brutes (%)<\/td>\n<td width=\"269\">26,2&#160;%<\/td>\n<td width=\"269\">25,7&#160;%<\/td>\n<\/tr>\n<tr>\n<td width=\"269\">Lys digestible (%)<\/td>\n<td width=\"269\">1,34&#160;%<\/td>\n<td width=\"269\">1,33&#160;%<\/td>\n<\/tr>\n<tr>\n<td width=\"269\">Met digestible (%)<\/td>\n<td width=\"269\">0,36&#160;%<\/td>\n<td width=\"269\">0,38&#160;%<\/td>\n<\/tr>\n<tr>\n<td width=\"269\">M + C digestibles (%)<\/td>\n<td width=\"269\">0,72&#160;%<\/td>\n<td width=\"269\">0,78&#160;%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&#160;<\/p>\n<p>Pour prouver quelque chose, j\u2019ai limit\u00e9 les ingr\u00e9dients.&#160; En n\u2019utilisant pas d\u2019acides amin\u00e9s synth\u00e9tiques (la DL-m\u00e9thionine et la L-lysine sont \u00e0 z\u00e9ro) dans le r\u00e9gime complet, j\u2019ai atteint des niveaux de digestibilit\u00e9 meilleurs de m\u00e9thionine (Met) et m\u00e9thionine plus cyst\u00e9ine (M + C) avec le tourteau de soja ExPress \u00ae par rapport au tourteau de soja obtenu par extraction par solvant \u00e0 partir de la mati\u00e8re premi\u00e8re.&#160; Les niveaux de digestibilit\u00e9 de lysine ont \u00e9t\u00e9 maintenus identiques.<\/p>\n<p>C\u2019est parce que le tourteau de soja ExPress \u00ae contient des <a href=\"http:\/\/blog.insta-pro.com\/2014\/05\/06\/quality-ingredients-a-consistent-source-of-highly-digestible-nutrients\/\">d\u2019acides amin\u00e9s plus digestibles<\/a> que le tourteau extrait par solvant.&#160; Dans cet exemple, une quantit\u00e9 moindre de tourteau a \u00e9t\u00e9 n\u00e9cessaire avec l\u2019un des deux proc\u00e9d\u00e9s.&#160; Nous pouvons donc conclure que les ingr\u00e9dients contenant des acides amin\u00e9s plus digestibles sont de meilleure qualit\u00e9 et ont des performances sup\u00e9rieures ou \u00e9gales avec de plus faibles quantit\u00e9s dans l\u2019alimentation.&#160; La digestibilit\u00e9 est donc extr\u00eamement importante.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La digestibilit\u00e9 des acides amin\u00e9s s\u2019est r\u00e9v\u00e9l\u00e9 un sujet appr\u00e9ci\u00e9 dans mes pr\u00e9c\u00e9dents blogs et dans les revues professionnelles&#160;; c\u2019est un indicateur important de la qualit\u00e9 des prot\u00e9ines, une haute digestibilit\u00e9 \u00e9tant meilleure.&#160; N\u00e9anmoins, que signifient ces valeurs et \u00e0 quel point les diff\u00e9rences de digestibilit\u00e9 sont-elles importantes en pratique&#160;? Les animaux de rente consomment [&hellip;]<\/p>\n","protected":false},"author":13,"featured_media":10777,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[7181],"tags":[574,637,585,592],"class_list":["post-3709","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nutrition-et-technologies","tag-creation-dune-usine-rentable","tag-formulation-de-lalimentation-animale","tag-produits-enrichis-fr-3","tag-transformation-pour-lalimentation-humaine-ou-animale-fr-2"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.2 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>De l\u2019importance de la digestibilit\u00e9 des acides amin\u00e9s - 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\/de-limportance-de-la-digestibilite-des-acides-amines\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"De l\u2019importance de la digestibilit\u00e9 des acides amin\u00e9s\" \/>\n<meta property=\"og:description\" content=\"La digestibilit\u00e9 des acides amin\u00e9s s\u2019est r\u00e9v\u00e9l\u00e9 un sujet appr\u00e9ci\u00e9 dans mes pr\u00e9c\u00e9dents blogs et dans les revues professionnelles&#160;; c\u2019est un indicateur important de la qualit\u00e9 des prot\u00e9ines, une haute digestibilit\u00e9 \u00e9tant meilleure.&#160; N\u00e9anmoins, que signifient ces valeurs et \u00e0 quel point les diff\u00e9rences de digestibilit\u00e9 sont-elles importantes en pratique&#160;? 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