{"id":57619,"date":"2022-05-03T19:06:34","date_gmt":"2022-05-03T19:06:34","guid":{"rendered":"https:\/\/www.zinpro.com\/how-fish-and-shrimp-immunology-is-impacted-by-quality-feed\/"},"modified":"2023-07-19T13:10:52","modified_gmt":"2023-07-19T18:10:52","slug":"how-fish-and-shrimp-immunology-is-impacted-by-quality-feed","status":"publish","type":"post","link":"https:\/\/www.zinpro.com\/fr\/resource-center\/blog\/how-fish-and-shrimp-immunology-is-impacted-by-quality-feed\/","title":{"rendered":"L'impact de la qualit\u00e9 des aliments sur l'immunologie des poissons et des crevettes"},"content":{"rendered":"<p>La suppl\u00e9mentation en oligo-\u00e9l\u00e9ments parmi d'autres nutriments essentiels tels que les acides amin\u00e9s, les acides gras essentiels et les vitamines est une strat\u00e9gie nutritionnelle \u00e9prouv\u00e9e pour renforcer le syst\u00e8me immunitaire des poissons et des crevettes. Au cours des dix derni\u00e8res ann\u00e9es, je me suis engag\u00e9 \u00e0 d\u00e9couvrir et \u00e0 partager des connaissances sur l'application pratique de la nutrition dans l'industrie de l'aquaculture. Cela commence par l'enseignement des raisons pour lesquelles les nutriments essentiels, y compris les oligo-\u00e9l\u00e9ments, jouent un r\u00f4le important dans l'att\u00e9nuation du stress chez les poissons, ce qui am\u00e9liore leur sant\u00e9 et leurs performances. J'ai r\u00e9cemment eu l'occasion de pr\u00e9senter aux c\u00f4t\u00e9s de <strong>par Benjam\u00edn Costas, expert du secteur<\/strong>Il a obtenu son doctorat en sciences animales \u00e0 l'universit\u00e9 de Porto en 2011 et occupe actuellement le poste de chercheur principal et de coordinateur de la sant\u00e9 animale et de l'aquaculture (A2S) au CIIMAR. Vous trouverez ci-dessous les informations utiles qu'il a pr\u00e9sent\u00e9es sur la mani\u00e8re d'utiliser l'immunologie nutritionnelle comme outil pour am\u00e9liorer la sant\u00e9 des poissons et des crevettes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Comprendre l'immunologie des poissons et des crevettes&nbsp;<\/h2>\n\n\n\n<p>La premi\u00e8re ligne de d\u00e9fense des poissons et des crevettes est constitu\u00e9e par leurs barri\u00e8res externes, qui sont directement soutenues par leur syst\u00e8me immunitaire. Comme pour les autres esp\u00e8ces animales, l'immunit\u00e9 des poissons et des crevettes peut \u00eatre inn\u00e9e (une r\u00e9ponse rapide et non sp\u00e9cifique pr\u00e9sente chez l'animal \u00e0 la naissance) et l'immunit\u00e9 des poissons peut \u00e9galement \u00eatre acquise (une immunit\u00e9 qui se d\u00e9veloppe lorsque le syst\u00e8me immunitaire r\u00e9agit \u00e0 des micro-organismes \u00e9trangers). Les deux types d'immunit\u00e9 sont m\u00e9di\u00e9s par plusieurs structures, cellules et facteurs humoraux qui peuvent varier en fonction de l'esp\u00e8ce.&nbsp;&nbsp;<\/p>\n\n\n\n<p>Le tableau ci-dessous r\u00e9sume les principales composantes des syst\u00e8mes immunitaires des poissons et des crevettes, tout en soulignant les principales diff\u00e9rences entre les deux.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"http:\/\/www.zinpro.com\/wp-content\/uploads\/2023\/06\/Aqua_Table_How-Fish-and-Shrimp-Immunology-is-Impacted-by-Quality-Feed.jpg\" alt=\"\" class=\"wp-image-39884\"\/><\/figure>\n\n\n\n<p>Il est important de noter que les r\u00e9ponses immunitaires diff\u00e8rent selon les esp\u00e8ces animales et les stimuli. L'\u00e9tat physiologique et immunitaire des poissons peut varier d'une esp\u00e8ce \u00e0 l'autre, d\u00e9pend de l'\u00e2ge (les jeunes animaux sont plus sensibles) et est affect\u00e9 par le syst\u00e8me et les conditions d'\u00e9levage (\u00e9tangs, cages, densit\u00e9, etc.). Par cons\u00e9quent, les strat\u00e9gies nutritionnelles visant \u00e0 renforcer les r\u00e9ponses immunitaires de l'h\u00f4te doivent \u00eatre adapt\u00e9es aux esp\u00e8ces et \u00e0 leurs conditions d'\u00e9levage particuli\u00e8res.&nbsp;<\/p>\n\n\n\n<p>Cet objectif peut \u00eatre atteint gr\u00e2ce \u00e0 l'\u00e9laboration et \u00e0 l'application d'aliments fonctionnels.&nbsp;&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">La suppl\u00e9mentation en m\u00e9thionine renforce l'immunit\u00e9 acquise&nbsp;<\/h2>\n\n\n\n<p>\u00c0 titre d'exemple de r\u00e9ponse nutritionnelle fonctionnelle, la suppl\u00e9mentation de l'alimentation aquatique en m\u00e9thionine peut conduire \u00e0 des am\u00e9liorations du syst\u00e8me immunitaire. Les r\u00e9ponses typiques comprennent une augmentation de la r\u00e9ponse leucocytaire p\u00e9riph\u00e9rique, de l'activit\u00e9 du compl\u00e9ment et de la capacit\u00e9 bact\u00e9ricide, ainsi qu'une augmentation des r\u00e9ponses inflammatoires, y compris des r\u00e9ponses cellulaires et humorales affectant les foyers inflammatoires de recrutement cellulaire (Machado M., 2015 ; Azeredo R., 2017).&nbsp;<\/p>\n\n\n\n<p>Vous trouverez ci-dessous les r\u00e9sultats de la mortalit\u00e9 du bar europ\u00e9en apr\u00e8s avoir re\u00e7u une injection de bact\u00e9ries pathog\u00e8nes dans la cavit\u00e9 p\u00e9riton\u00e9ale (<em>Photobacterium damselae piscicida<\/em>) lorsqu'ils sont nourris avec l'un des trois traitements alimentaires.&nbsp;&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"http:\/\/www.zinpro.com\/wp-content\/uploads\/2023\/06\/cumulative-mortality.png\" alt=\"\" class=\"wp-image-47039\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Les aliments pour poissons de qualit\u00e9 incluent les algues dans leur formulation alimentaire<\/h2>\n\n\n\n<p>Les algues contiennent divers compos\u00e9s bioactifs, tels que des acides gras hautement insatur\u00e9s (HUFA), des polysaccharides de la paroi cellulaire et des pigments\/polyph\u00e9nols, qui peuvent am\u00e9liorer la r\u00e9ponse immunitaire.&nbsp;<\/p>\n\n\n\n<p>Les poissons dont l'alimentation est compl\u00e9t\u00e9e par trois esp\u00e8ces de microalgues (<em>Tetraselmis striata, Phaeodactylum sp<\/em>. et <em>Nannochloropsis sp.<\/em>) et deux algues marines (<em>Gracilaria gracilis<\/em> et <em>Ulva rigida<\/em>) ont montr\u00e9 une augmentation de la r\u00e9ponse leucocytaire (neutrophiles) lorsqu'ils ont \u00e9t\u00e9 expos\u00e9s \u00e0 la bact\u00e9rie <em>Photobacterium damselae piscicida<\/em>.&nbsp;&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"http:\/\/www.zinpro.com\/wp-content\/uploads\/2023\/06\/image-7.png\" alt=\"\" class=\"wp-image-39888\"\/><\/figure>\n\n\n\n<p>Apr\u00e8s une semaine de suppl\u00e9mentation en algues, les poissons nourris au <em>Ulva rigida <\/em>avaient une r\u00e9ponse neutrophile plus \u00e9lev\u00e9e, ce qui indique que les algues am\u00e9liorent la r\u00e9ponse immunitaire des poissons et peuvent les rendre plus r\u00e9sistants aux agents pathog\u00e8nes.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Immunostimulants et immunomodulateurs en aquaculture<\/h2>\n\n\n\n<p>Concentrons-nous sur les strat\u00e9gies \u00e0 court terme et \u00e0 long terme et sur la diff\u00e9rence entre les immunostimulants et les immunomodulateurs.&nbsp;&nbsp;<\/p>\n\n\n\n<p>Les immunostimulants sont des compos\u00e9s qui activent la r\u00e9ponse immunitaire inn\u00e9e et doivent donc toujours \u00eatre administr\u00e9s sur de courtes p\u00e9riodes. L'immunostimulation chronique (\u00e0 long terme) a souvent des effets n\u00e9gatifs sur la sant\u00e9 et entra\u00eene une augmentation de la demande en nutriments au d\u00e9triment des fonctions productives normales, telles que la croissance.&nbsp;<\/p>\n\n\n\n<p>D'autre part, les immunomodulateurs n'induisent g\u00e9n\u00e9ralement des changements importants dans la r\u00e9ponse immunitaire qu'une fois que l'h\u00f4te est stimul\u00e9. Par exemple, un additif donn\u00e9 peut ne pas modifier les param\u00e8tres immunitaires apr\u00e8s plusieurs semaines d'alimentation, mais la r\u00e9ponse immunitaire est stimul\u00e9e apr\u00e8s une infection et entra\u00eene souvent une am\u00e9lioration de la survie. Par cons\u00e9quent, la suppl\u00e9mentation en nutriments ayant un r\u00f4le immunomodulateur devrait \u00eatre consid\u00e9r\u00e9e comme une strat\u00e9gie \u00e0 long terme pour soutenir la sant\u00e9.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Quatre aspects de l'immunologie nutritionnelle<\/h2>\n\n\n\n<ol class=\"wp-block-list\"><li><strong>Disponibilit\u00e9 :<\/strong> De nombreux additifs et ingr\u00e9dients sont disponibles pour am\u00e9liorer l'\u00e9tat de sant\u00e9 des animaux, mais leur disponibilit\u00e9 pour une production \u00e0 grande \u00e9chelle peut \u00eatre un facteur limitant.&nbsp;<\/li><\/ol>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\"><li><strong>Esp\u00e8ce et cycle de vie :<\/strong> le dosage d'un additif donn\u00e9 doit \u00eatre \u00e9tabli pour une esp\u00e8ce et un \u00e2ge donn\u00e9s.&nbsp;<\/li><\/ol>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\"><li><strong>Strat\u00e9gie \u00e0 long terme ou \u00e0 court terme :<\/strong> Ces deux \u00e9l\u00e9ments doivent \u00eatre pris en compte lors du choix d'un immunomodulateur ou d'un compos\u00e9 immunostimulant.&nbsp;<\/li><\/ol>\n\n\n\n<ol class=\"wp-block-list\" start=\"4\"><li><strong>Durabilit\u00e9 :<\/strong> Les r\u00e9gimes alimentaires fonctionnels peuvent \u00eatre des facteurs cl\u00e9s pour am\u00e9liorer l'\u00e9tat de sant\u00e9 des animaux dans des conditions difficiles, ce qui permet de pr\u00e9venir l'apparition de maladies, de contribuer \u00e0 la durabilit\u00e9 de l'industrie et de limiter l'utilisation d'antibiotiques.&nbsp;<\/li><\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">Se connecter avec les experts en nutrition des poissons et des crevettes<\/h2>\n\n\n\n<p>Notre \u00e9quipe d'experts de classe mondiale s'engage \u00e0 am\u00e9liorer l'immunit\u00e9 de vos poissons et crevettes, \u00e0 soutenir la long\u00e9vit\u00e9 de votre exploitation tout en permettant la production de produits plus nutritifs pour un approvisionnement alimentaire plus sain et plus durable. <a href=\"https:\/\/www.zinpro.com\/fr\/lets-connect\/\" target=\"_blank\" rel=\"noreferrer noopener\">Contactez votre repr\u00e9sentant Zinpro<\/a> pour savoir comment nos experts peuvent travailler avec vous pour vous aider \u00e0 am\u00e9liorer votre exploitation aquacole gr\u00e2ce \u00e0 une nutrition de haute qualit\u00e9.&nbsp;<\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Supplementation with trace minerals among other essential nutrients such as amino acids, essential fatty acids and vitamins is a proven nutritional strategy to strengthen fish [&#8230;]<\/p>\n","protected":false},"author":53,"featured_media":57623,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_tec_requires_first_save":true,"_eb_attr":"","_uag_custom_page_level_css":"","_EventAllDay":false,"_EventTimezone":"","_EventStartDate":"","_EventEndDate":"","_EventStartDateUTC":"","_EventEndDateUTC":"","_EventShowMap":false,"_EventShowMapLink":false,"_EventURL":"","_EventCost":"","_EventCostDescription":"","_EventCurrencySymbol":"","_EventCurrencyCode":"","_EventCurrencyPosition":"","_EventDateTimeSeparator":"","_EventTimeRangeSeparator":"","_EventOrganizerID":[],"_EventVenueID":[],"_OrganizerEmail":"","_OrganizerPhone":"","_OrganizerWebsite":"","_VenueAddress":"","_VenueCity":"","_VenueCountry":"","_VenueProvince":"","_VenueState":"","_VenueZip":"","_VenuePhone":"","_VenueURL":"","_VenueStateProvince":"","_VenueLat":"","_VenueLng":"","_VenueShowMap":false,"_VenueShowMapLink":false,"_tribe_blocks_recurrence_rules":"","_tribe_blocks_recurrence_description":"","_tribe_blocks_recurrence_exclusions":"","_ecp_custom_2":"","footnotes":""},"categories":[2682],"tags":[2683,2684,2685,2714],"species":[987],"class_list":["post-57619","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-animal-performance","tag-health","tag-immunity","tag-sustainability"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>How Quality Fish Feed Enhances Immune Responses in Fish and Shrimp | Zinpro<\/title>\n<meta name=\"description\" content=\"Discover how quality fish feed that includes essential nutrients like trace minerals and amino acids can positively impact fish and shrimp immunology.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.zinpro.com\/fr\/resource-center\/blog\/how-fish-and-shrimp-immunology-is-impacted-by-quality-feed\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How Quality Fish Feed Enhances Immune Responses in Fish and Shrimp | Zinpro\" \/>\n<meta property=\"og:description\" content=\"Discover how quality fish 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