{"id":2153,"date":"2022-09-28T11:11:12","date_gmt":"2022-09-28T09:11:12","guid":{"rendered":"https:\/\/normandiemaine.cerfrance.fr\/arad2\/?p=2153"},"modified":"2023-03-07T09:23:46","modified_gmt":"2023-03-07T08:23:46","slug":"ondes-electromagnetiques-desordres-elevage","status":"publish","type":"post","link":"https:\/\/normandiemaine.cerfrance.fr\/arad2\/ondes-electromagnetiques-desordres-elevage\/","title":{"rendered":"Ondes \u00e9lectromagn\u00e9tiques et d\u00e9sordres"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">Ondes \u00e9lectromagn\u00e9tiques et d\u00e9sordres en \u00e9levage<\/h1>\n\n\n\n<p>D\u00e9couvrez notre derni\u00e8re publication sur les ondes \u00e9lectromagn\u00e9tiques et les d\u00e9sordres caus\u00e9s en \u00e9levage.<\/p>\n\n\n<div class=\"_3d-flip-book  fb3d-fullscreen-mode full-size\" data-id=\"2151\" data-mode=\"fullscreen\" data-title=\"false\" data-template=\"short-white-book-view\" data-lightbox=\"dark-shadow\" data-urlparam=\"fb3d-page\" data-page-n=\"0\" data-pdf=\"\" data-tax=\"null\" data-thumbnail=\"\" data-cols=\"3\" data-book-template=\"default\" data-trigger=\"\"><\/div><script type=\"text\/javascript\">window.FB3D_CLIENT_DATA = window.FB3D_CLIENT_DATA || [];FB3D_CLIENT_DATA.push('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');window.FB3D_CLIENT_LOCALE && FB3D_CLIENT_LOCALE.render && FB3D_CLIENT_LOCALE.render();<\/script>\n\n\n\n<p>L\u2019effet d\u00e9l\u00e9t\u00e8re des champs \u00e9lectromagn\u00e9tiques et des courants \u00e9lectriques parasites de faible intensit\u00e9 sur les \u00eatres vivants suscite des d\u00e9bats depuis de nombreuses ann\u00e9es. En \u00e9levage, si cela peut concerner les lignes tr\u00e8s haute tension et basse tension, les transformateurs, les installations photovolta\u00efques et plus r\u00e9cemment les \u00e9oliennes&#8230;, dans la plupart des cas, c\u2019est d\u2019abord le fait de d\u00e9fauts d\u2019installations d\u2019\u00e9levage. Pour les bovins, les d\u00e9sordres \u00e9lectriques, quelle qu\u2019en soit l\u2019origine, provoquent des troubles du comportement, des pertes de production, voire de la mortalit\u00e9 dans les cas les plus s\u00e9v\u00e8res. <\/p>\n\n\n\n<p>En cas de suspicion, un audit comprenant trois volets zootechniques, sanitaire et \u00e9lectrique doit \u00eatre r\u00e9alis\u00e9. Lorsque des tensions anormales sont identifi\u00e9es, la mise en \u00e9quipotentialit\u00e9 des installations, en particulier des zones sensibles : abreuvoirs, mangeoires, cornadis, voire le ferraillage de la dalle de la stabulation ou la mise en place d\u2019une boucle de fond de fouille permettent de corriger les troubles, validant de ce fait l\u2019\u00e9tiologie \u00e9lectrique. Dans certains cas, ils restent inexpliqu\u00e9s, laissant suspecter une origine tellurique, pouvant impliquer des failles ou des rivi\u00e8res souterraines, souvent mises en avant par des g\u00e9obiologues, sans qu\u2019aucune validation scientifique n\u2019ait pu \u00eatre r\u00e9alis\u00e9e \u00e0 ce jour.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">L\u2019\u00e9levage, un lieu amplificateur des courants parasites<\/h2>\n\n\n\n<p>Si les \u00e9tudes disponibles n\u2019ont pas mis en \u00e9vidence d\u2019effets directs des lignes haute tension, il en va autrement des effets indirects que peuvent provoquer les tensions et courants parasites g\u00e9n\u00e9r\u00e9s par effet d\u2019induction. Les <strong>courants parasites sont des courants non souhait\u00e9s et non ma\u00eetris\u00e9s<\/strong>. Ils circulent donc en dehors des circuits \u00e9lectriques. Ils provoquent des tensions de pas ou de contact, sources de stress et d\u2019inconfort pour les animaux.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img data-recalc-dims=\"1\" fetchpriority=\"high\" decoding=\"async\" width=\"1008\" height=\"391\" src=\"https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2022\/09\/elevage-courants-parasites.png?resize=1008%2C391&#038;ssl=1\" alt=\"Les courants parasites provoquent des tensions de pas ou de contact, sources de stress et d\u2019inconfort pour les animaux.\" class=\"wp-image-2154\" srcset=\"https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2022\/09\/elevage-courants-parasites.png?w=1008&amp;ssl=1 1008w, https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2022\/09\/elevage-courants-parasites.png?resize=300%2C116&amp;ssl=1 300w, https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2022\/09\/elevage-courants-parasites.png?resize=768%2C298&amp;ssl=1 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><figcaption>Les courants parasites provoquent des tensions de pas ou de contact, sources de stress et d\u2019inconfort pour les animaux.<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Les origines des ondes \u00e9l\u00e9ctromagn\u00e9tiques<\/h3>\n\n\n\n<p>Les origines sont multiples\u00a0: <\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>utilisation de la terre comme conducteur de retour pour certains r\u00e9seaux (ex SNCF),<\/li><li> installations \u00e9lectriques mal isol\u00e9es ou d\u00e9fectueuses produisant des courants de fuite, <\/li><li>proximit\u00e9 des lignes \u00e9lectriques haute et tr\u00e8s haute tension.<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Les ph\u00e9nom\u00e8nes \u00e9lectriques <\/h3>\n\n\n\n<p>Il existe<strong> deux types de ph\u00e9nom\u00e8nes \u00e9lectriques\u00a0:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>Le <strong>couplage capacitif (\u00e9lectrique)<\/strong> li\u00e9 au champ \u00e9lectrique; donc \u00e0 la tension d\u2019une ligne a\u00e9rienne. Par exemple un abreuvoir isol\u00e9 du sol sous une ligne \u00e0 haute tension<\/li><li>Le <strong>couplage inductif (magn\u00e9tique)<\/strong> li\u00e9 au champ magn\u00e9tique donc au courant d\u2019une ligne a\u00e9rienne ou souterraine. Par exemple une cl\u00f4ture m\u00e9tallique, isol\u00e9e du sol, parall\u00e8le \u00e0 une ligne \u00e0 haute tension sur plusieurs centaines de m\u00e8tres et raccord\u00e9e \u00e0 la terre en un seul point donn\u00e9<\/li><\/ol>\n\n\n\n<p>L\u2019\u00e9levage est un lieu amplificateur de ces ph\u00e9nom\u00e8nes. L<strong>es b\u00e2timents et \u00e9quipement sont sensibles aux ph\u00e9nom\u00e8nes d\u2019induction de par les structures m\u00e9talliques de grande dimension en contact avec les animaux<\/strong>. Toutefois, les mises en terre des abreuvoirs sont parfois imparfaites. Enfin, on observe un effet de pile par la mise en contact entre diff\u00e9rents m\u00e9taux et des milieux acides<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Les troubles li\u00e9s \u00e0 ces courants tr\u00e8s vari\u00e9s<\/h2>\n\n\n\n<p>Les<strong> troubles constat\u00e9s sont tr\u00e8s vari\u00e9s<\/strong>. Mais pour suspecter une cause \u00e9lectrique, il faut que <strong>les animaux pr\u00e9sentent \u00e0 la fois des troubles du comportement et des manifestations cliniques plus ou moins graves<\/strong>. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Les d\u00e9sordes li\u00e9s aux ondes \u00e9lectromagn\u00e9tiques chez le bovin<\/h3>\n\n\n\n<p>La plupart des dossiers \u00e9tudi\u00e9s concernent les bovins, en particulier les vaches laiti\u00e8res. Les troubles du comportement se traduisent par de la nervosit\u00e9, en particulier en salle de traite. Elle provoque le d\u00e9crochement des manchons trayeurs, d\u00e9f\u00e9cation en cours de traite, coups de pied ou encore pour les robots, une moindre fr\u00e9quentation. Dans certains cas, la surface de la stabulation n\u2019est pas correctement utilis\u00e9e, certaines zones pouvant \u00eatre d\u00e9laiss\u00e9es. On peut observer des vaches restant anormalement en station debout ou avec des tremblements et le poil h\u00e9riss\u00e9. Lorsque les courants affectent les abreuvoirs ou les cornadis, la consommation d\u2019eau et d\u2019aliments est moindre. Il en r\u00e9sulte alors une perte de production de lait, une augmentation de l\u2019incidence des mammites subcliniques, des retards de croissance chez les jeunes et des diarh\u00e9es n\u00e9onatales. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Les d\u00e9sordes li\u00e9s aux ondes \u00e9lectromagn\u00e9tiques dans d&rsquo;autres \u00e9levages<\/h3>\n\n\n\n<p>Pour les poules pondeuses, on observe une chute de ponte. Et chez le porc, du cannibalisme, de la mortinatalit\u00e9 ou encore des \u00e9crasements par les truies. Dans les cas les plus graves et quelle que soit l\u2019esp\u00e8ce, cela peut \u00e9galement aboutir \u00e0 la mort.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Un audit complet zootechnique, sanitaire et \u00e9lectrique \u00e0 r\u00e9aliser<\/h2>\n\n\n\n<p>Les <strong>troubles li\u00e9s aux courants parasites traduisent une situation de stress pouvant \u00eatre due \u00e0 de nombreuses autres causes<\/strong>. Il est donc imp\u00e9ratif d\u2019<strong>\u00e9tudier la situation de l\u2019\u00e9levage \u00e0 trois niveaux : <\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\"><li><strong>zootechnique, <\/strong><\/li><li><strong>sanitaire,<\/strong><\/li><li><strong>\u00e9lectrique.<\/strong> <\/li><\/ol>\n\n\n\n<p>Pour les deux premiers, il est indispensable de disposer d\u2019indicateurs de production fiables et suivis de fa\u00e7on ind\u00e9pendante.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">L&rsquo;audit zootechnique<\/h3>\n\n\n\n<p>Pour l\u2019<strong>audit zootechnique, quatre champs sont alors \u00e9valu\u00e9s\u00a0:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\"><li><strong>Traite<\/strong><\/li><li><strong>Alimentation : <\/strong>\u00e9quilibre de la ration, quantit\u00e9s distribu\u00e9es, profils m\u00e9taboliques, acc\u00e8s \u00e0 l\u2019auge (nombre de places au cornadis)<\/li><li>M\u00e9thode de <strong>d\u00e9tection des chaleurs et pratique des ins\u00e9minations<\/strong><\/li><li><strong>Accessibilit\u00e9 \u00e0 l\u2019eau<\/strong> : nombre d\u2019abreuvoirs, localisation, d\u00e9bit, qualit\u00e9 de l\u2019eau<\/li><\/ol>\n\n\n\n<p>Il est parfois n\u00e9cessaire de valider et d\u2019objectiver les troubles du comportement en mettant en place des cam\u00e9ras. En cas de sous-consommation d\u2019eau, des compteurs doivent \u00eatre install\u00e9s sur tous les abreuvoirs.<\/p>\n\n\n\n<p>Un bilan sanitaire analytique complet doit \u00eatre r\u00e9alis\u00e9 (paratuberculose, fi\u00e8vre Q, chlamydiose, maladie des muqueuses, pathologie du pied, erlichiose) ainsi qu\u2019une analyse de la microbiologie du lait. Dans les cas graves, il est n\u00e9cessaire de faire une autopsie d\u2019un animal caract\u00e9ristique.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Les investigations \u00e9lectriques<\/h3>\n\n\n\n<p><strong>Les investigations \u00e9lectriques sont, quant \u00e0 elles, cons\u00e9quentes et d\u00e9licates \u00e0 mener.<\/strong> L\u2019audit \u00e9lectrique n\u00e9cessite une recherche minutieuse des tensions de pas et de contact sur le sol, les abreuvoirs et les cornadis. Cette recherche peut \u00eatre ponctuelle mais il est parfois n\u00e9cessaire de mettre en place des enregistreurs.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img data-recalc-dims=\"1\" decoding=\"async\" width=\"452\" height=\"202\" src=\"https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2022\/09\/recherche-courants-parasites-elevage.png?resize=452%2C202&#038;ssl=1\" alt=\"L\u2019audit \u00e9lectrique n\u00e9cessite une recherche minutieuse des tensions de pas et de contact sur le sol, les abreuvoirs et les cornadis.\" class=\"wp-image-2155\" srcset=\"https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2022\/09\/recherche-courants-parasites-elevage.png?w=452&amp;ssl=1 452w, https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2022\/09\/recherche-courants-parasites-elevage.png?resize=300%2C134&amp;ssl=1 300w\" sizes=\"(max-width: 452px) 100vw, 452px\" \/><figcaption>L\u2019audit \u00e9lectrique n\u00e9cessite une recherche minutieuse des tensions de pas et de contact sur le sol, les abreuvoirs et les cornadis.<\/figcaption><\/figure>\n\n\n\n<p>Il est commun\u00e9ment admis que le seuil de perception des courants par les animaux est de 500 mVolts en courant alternatif de 50 Hertz, fourni par les op\u00e9rateurs \u00e9lectriques. Des courants continus sont parfois mesur\u00e9s, avec des tensions souvent \u00e9lev\u00e9es sup\u00e9rieures \u00e0 2 ou 3 Volts, mais les animaux n\u2019y semblent pas tr\u00e8s sensibles.<\/p>\n\n\n\n<p><strong>Certains points sont \u00e9galement \u00e0 renseigner\u00a0:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Toutes les <strong>modifications relatives \u00e0 la conduite de l\u2019\u00e9levage et \u00e0 la structure des b\u00e2timents<\/strong> (les difficult\u00e9s apparaissent souvent apr\u00e8s une extension)<\/li><li><strong>Dimensions des b\u00e2timents<\/strong><\/li><li><strong>Dates de construction et\/ou modifications<\/strong><\/li><li><strong>Pr\u00e9sence de ferraillage dans les sols<\/strong> (plans b\u00e2timent)<\/li><li><strong>Alimentation \u00e9lectrique de l\u2019exploitation<\/strong> (transformateur HT\/BT priv\u00e9, branchement sur r\u00e9seau Basse Tension ERDF, groupe \u00e9lectrog\u00e8ne\u2026)<\/li><li><strong>Rapports de v\u00e9rification initiale ou p\u00e9riodique des installations \u00e9lectriques<\/strong> (APAVE, SOCOTEC \u2026) et autres documents \u00e9lectriques (plans, sch\u00e9mas\u2026)<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Les mesures correctives \u00e0 appliquer<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Les types de mesures correctives :<\/h3>\n\n\n\n<p>Une fois la cause \u00e9lectrique identifi\u00e9e, les<strong> mesures correctives sont de quatre ordres<\/strong>\u00a0:<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li><strong>Mise en \u00e9quipotentialit\u00e9 des abreuvoirs, mangeoires, cornadis<\/strong>\u00a0: toutes les structures m\u00e9talliques doivent \u00eatre reli\u00e9s \u00e0 la terre. <ul><li>La qualiti\u00e9 de la prise de terre est \u00e9valu\u00e9e par sa r\u00e9sistance exprim\u00e9e en Ohm (\u03a9). <\/li><li>En \u00e9levage, on pr\u00e9conise une valeur inf\u00e9rieure ou \u00e9gale \u00e0 18 Ohms, afin d\u2019assurer un confort optimal des animaux. On recherchera une valeur inf\u00e9rieure \u00e0 10 Ohms pour des ateliers comportant des \u00e9quipements avec variateurs de fr\u00e9quence (robot de traite, certains racleurs, \u2026).<\/li><\/ul><\/li><li><strong>Boucle de fond de fouille <\/strong>(obligatoire depuis 2002) suivant la norme NF-C 15\u00a0100. <ul><li>Elle peut \u00eatre constitu\u00e9e par un conducteur en cuivre nu d\u2019au moins 25 mm\u00b2 de section, en bon contact avec le sol. <\/li><li>La r\u00e9alisation d\u2019une boucle \u00e0 fond de fouille pendant la construction des b\u00e2timents est la meilleure solution pour obtenir une bonne prise de terre. <\/li><li>Pour les b\u00e2timents d\u2019\u00e9levage existants, la solution la plus r\u00e9pandue est la mise \u00e0 la terre par \u00ab un piquet de terre \u00bb. Pour que cette terre soit de qualit\u00e9, le piquet (g\u00e9n\u00e9ralement en acier galvanis\u00e9) doit \u00eatre plant\u00e9 au minimum \u00e0 deux m\u00e8tres de profondeur. <\/li><li>Il faut installer plusieurs piquets pour r\u00e9duire la r\u00e9sistance globale de la prise de terre. Ces piquets de deux m\u00e8tres minimum doivent \u00eatre espac\u00e9s d\u2019au moins une longueur de piquet (2m). Mais de pr\u00e9f\u00e9rence du double (4m). De plus, ils sont reli\u00e9s entre eux soit par un conducteur isol\u00e9 d\u2019au moins 16mm\u00b2 soit par un conducteur en cuivre (ou en aluminium) d\u2019au moins 25 mm\u00b2.<\/li><\/ul><\/li><li><strong>Ferraillage de la dalle de la stabulation<\/strong><\/li><li><strong>Mesures particuli\u00e8res<\/strong> comme l\u2019installation de tapis de caoutchouc isolant<\/li><\/ol>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img data-recalc-dims=\"1\" decoding=\"async\" width=\"409\" height=\"315\" src=\"https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2022\/09\/mesures-correctives-courants-parasites.png?resize=409%2C315&#038;ssl=1\" alt=\"Ferraillage de la dalle de la stabulation\" class=\"wp-image-2156\" srcset=\"https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2022\/09\/mesures-correctives-courants-parasites.png?w=409&amp;ssl=1 409w, https:\/\/i0.wp.com\/normandiemaine.cerfrance.fr\/arad2\/wp-content\/uploads\/sites\/3\/2022\/09\/mesures-correctives-courants-parasites.png?resize=300%2C231&amp;ssl=1 300w\" sizes=\"(max-width: 409px) 100vw, 409px\" \/><figcaption>Ferraillage de la dalle de la stabulation<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Les mesures correctrices sont tr\u00e8s efficaces lorsque la cause est bien identifi\u00e9e<\/h3>\n\n\n\n<p><strong>Les mesures correctrices sont tr\u00e8s efficaces lorsque la cause est bien identifi\u00e9e. <\/strong>Par contre, les difficult\u00e9s peuvent \u00eatre insurmontables lorsque leur cause reste inexpliqu\u00e9e. Ce sont des cas pour lesquels il n\u2019y a aucun probl\u00e8me \u00e9lectrique identifi\u00e9. L\u2019installation est alors conforme et aucune tension parasite n\u2019est mesur\u00e9e, laissant suspecter une origine tellurique, pouvant impliquer des failles ou des rivi\u00e8res souterraines, souvent mises en avant par des g\u00e9obiologues.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Source\u00a0pour notre document sur les ondes \u00e9lectromagn\u00e9tiques et d\u00e9sordres :<\/h2>\n\n\n\n<p>CNIEL, 2019. Comment \u00e9viter les courants \u00e9lectriques parasites en \u00e9levage laitier ? <a href=\"https:\/\/idele.fr\/fileadmin\/medias\/TEMP\/Eviter_courant_elec_parasites_Construction_batiment_CNIEL_07_2019_pap.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Brochure<\/a><\/p>\n\n\n\n<p>Ondes \u00e9lectromagn\u00e9tiques et d\u00e9sordres en \u00e9levage &#8211; <a href=\"https:\/\/www.academie-agriculture.fr\/actualites\/academie\/seance\/academie\/ondes-electromagnetiques-et-desordres-en-elevage\" target=\"_blank\" rel=\"noreferrer noopener\">S\u00e9ance Acad\u00e9mie d\u2019Agriculture du 1<sup>er<\/sup> juin 2022<\/a><\/p>\n\n\n\n<p>Retrouvez toutes nos publications sur comment assurer le <a href=\"https:\/\/normandiemaine.cerfrance.fr\/arad2\/category\/sante-et-bien-etre-animal\/assurer-le-bien-etre-animal\/\" target=\"_blank\" rel=\"noreferrer noopener\">bien \u00eatre des animaux en \u00e9levage<\/a> sur notre site internet.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>En \u00e9levage, les ondes \u00e9lectromagn\u00e9tiques provoquent : troubles du comportement, pertes de production&#8230; <\/p>\n","protected":false},"author":4,"featured_media":2157,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[42,33],"tags":[],"class_list":["post-2153","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-assurer-le-bien-etre-animal","category-sante-et-bien-etre-animal"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Ondes \u00e9lectromagn\u00e9tiques et d\u00e9sordres - L&#039;ARAD2<\/title>\n<meta name=\"description\" content=\"En \u00e9levage, les ondes \u00e9lectromagn\u00e9tiques provoquent des d\u00e9sordres : troubles du comportement, pertes de production...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link 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