{"id":57261,"date":"2020-09-10T23:00:44","date_gmt":"2020-09-10T23:00:44","guid":{"rendered":"https:\/\/www.zinpro.com\/source-matters-manganese-supplementation-impacts-dairy-cow-performance\/"},"modified":"2024-08-15T13:21:54","modified_gmt":"2024-08-15T18:21:54","slug":"source-matters-manganese-supplementation-impacts-dairy-cow-performance","status":"publish","type":"post","link":"https:\/\/www.zinpro.com\/fr\/resource-center\/blog\/source-matters-manganese-supplementation-impacts-dairy-cow-performance\/","title":{"rendered":"La suppl\u00e9mentation en mangan\u00e8se a un impact sur la performance des vaches laiti\u00e8res"},"content":{"rendered":"

Lorsqu'il s'agit de recherche sur les oligo-\u00e9l\u00e9ments, le mangan\u00e8se est souvent rel\u00e9gu\u00e9 au second plan par rapport \u00e0 d'autres oligo-\u00e9l\u00e9ments essentiels, tels que le zinc et le cuivre. En r\u00e9alit\u00e9, le mangan\u00e8se est un oligo-\u00e9l\u00e9ment vital et joue un r\u00f4le important dans la nutrition globale du b\u00e9tail. <\/p>\n\n\n\n

Le mangan\u00e8se est un cofacteur pour les enzymes qui interviennent dans le m\u00e9tabolisme des graisses, le m\u00e9tabolisme des glucides et la production d'\u00e9nergie, et il est essentiel \u00e0 la sant\u00e9 du b\u00e9tail en tant qu'antioxydant. En outre, en tant que cofacteur de la production de cholest\u00e9rol, le mangan\u00e8se est essentiel aux performances de reproduction. <\/p>\n\n\n\n

Le mangan\u00e8se est \u00e9galement responsable de la production de glycoprot\u00e9ines, qui sont des pr\u00e9curseurs du tissu conjonctif et de la formation des os. Par cons\u00e9quent, une grave carence en mangan\u00e8se chez les vaches taries peut entra\u00eener une formation osseuse inad\u00e9quate chez leurs descendants (pattes faibles et d\u00e9form\u00e9es). <\/p>\n\n\n\n

Au-del\u00e0 des recommandations du CNR<\/h2>\n\n\n\n

La recommandation du NRC de 2001 pour le mangan\u00e8se dans les vaches laiti\u00e8res adultes est d'environ 14 \u00e0 20 ppm. La recommandation du CNR tient compte du poids corporel, de la production laiti\u00e8re et du taux d'absorption du mangan\u00e8se (environ 0,75%), ainsi que de la croissance et de l'\u00e9tat de gestation. La recommandation ne tient pas compte de la pr\u00e9sence d'antagonistes tels que le fer, des conditions de stress (comme le stress thermique et la p\u00e9riode de transition), de la pr\u00e9sence de mycotoxines dans les aliments pour animaux ou de tout autre facteur susceptible de r\u00e9duire l'absorption du mangan\u00e8se ou d'augmenter les besoins en mangan\u00e8se d'une vache. <\/p>\n\n\n\n

Une \u00e9tude r\u00e9alis\u00e9e par Weiss et Socha en 2005 a d\u00e9termin\u00e9 que les besoins en mangan\u00e8se \u00e9taient 1,6 et 2,7 fois sup\u00e9rieurs aux recommandations du NRC pour les vaches en lactation et les vaches taries, respectivement. Une suppl\u00e9mentation doit \u00eatre apport\u00e9e pour \u00e9viter de tels d\u00e9ficits. <\/p>\n\n\n\n

Pour une performance optimale du b\u00e9tail, nous recommandons de donner 55 \u00e0 75 ppm de mangan\u00e8se suppl\u00e9mentaire dans le cadre d'un programme de nutrition efficace. Une partie du suppl\u00e9ment devrait provenir des Min\u00e9raux de Performance Zinpro\u00ae. Des niveaux plus \u00e9lev\u00e9s et des sources de mangan\u00e8se plus biodisponibles peuvent am\u00e9liorer les performances et la sant\u00e9 des animaux. <\/p>\n\n\n\n

Une \u00e9tude r\u00e9cente a r\u00e9v\u00e9l\u00e9 que l'apport de niveaux plus \u00e9lev\u00e9s de mangan\u00e8se provenant d'oligo-\u00e9l\u00e9ments de performance r\u00e9duit la pr\u00e9valence de la fi\u00e8vre du lait chez les vaches laiti\u00e8res, ce qui peut \u00e9galement entra\u00eener une r\u00e9duction de la mortalit\u00e9. <\/p>\n\n\n\n

Param\u00e8tres de l'\u00e9tude<\/h2>\n\n\n\n

L'\u00e9tude de 2017, men\u00e9e dans une grande laiterie commerciale de la Central Valley, en Californie, a \u00e9valu\u00e9 la fa\u00e7on dont le mangan\u00e8se provenant de la Zinpro\u00ae Availa <\/sup>Mn<\/a>peut avoir un impact sur la sant\u00e9 et les performances des animaux lorsque la suppl\u00e9mentation a \u00e9t\u00e9 augment\u00e9e de 9 \u00e0 20 ppm dans les r\u00e9gimes alimentaires des vaches laiti\u00e8res en lactation. L'\u00e9tude s'est d\u00e9roul\u00e9e de 30 jours avant la naissance \u00e0 200 jours de production laiti\u00e8re et a port\u00e9 sur 156 vaches Holstein primipares et 573 vaches Holstein multipares qui ont \u00e9t\u00e9 nourries avec l'un des deux r\u00e9gimes alimentaires :\u00a0<\/p>\n\n\n\n

9 ppm Suppl\u00e9mentation :<\/strong>Un total de 60 ppm de mangan\u00e8se a \u00e9t\u00e9 apport\u00e9 \u00e0 chaque vache avec 51 ppm de mangan\u00e8se inorganique provenant du sulfate de mangan\u00e8se (MnSO4<\/sub>) et 9 ppm de mangan\u00e8se provenant de Zinpro Availa Mn (n=356). Ce taux de suppl\u00e9mentation en oligo-\u00e9l\u00e9ments de performance est notre recommandation standard depuis de nombreuses ann\u00e9es. <\/p>\n\n\n\n

20 ppm Suppl\u00e9mentation :<\/strong>Un total de 60 ppm de mangan\u00e8se a \u00e9t\u00e9 administr\u00e9 \u00e0 chaque vache, 40 ppm provenant du MnSO4<\/sub>et 20 ppm de Zinpro Availa Mn (n=373). <\/p>\n\n\n\n

Toutes les vaches \u00e9taient log\u00e9es en stabulation libre, les primipares et les multipares \u00e9tant log\u00e9es dans des enclos s\u00e9par\u00e9s avant le v\u00ealage. Toutes les vaches ont re\u00e7u le m\u00eame niveau de suppl\u00e9ment de mangan\u00e8se dans le m\u00e9lange de base d'oligo-\u00e9l\u00e9ments de la ration totale (RTM), le mangan\u00e8se suppl\u00e9mentaire provenant du MnSO4<\/sub>ou Availa-Mn administr\u00e9 par voie orale avec 50 ml de m\u00e9lasse sur une base individuelle. Des bilans de sant\u00e9 ont \u00e9t\u00e9 effectu\u00e9s quotidiennement et les analyses de lait ont port\u00e9 sur le rendement en mati\u00e8re grasse, la prot\u00e9ine vraie et le nombre de cellules somatiques. <\/p>\n\n\n\n

Les oligo-\u00e9l\u00e9ments de performance r\u00e9duisent la fi\u00e8vre du lait et la mortalit\u00e9\u00a0<\/h2>\n\n\n\n

Le rendement laitier, le lait corrig\u00e9 en \u00e9nergie, les composants du lait, le nombre de cellules somatiques et les param\u00e8tres de reproduction \u00e9taient similaires entre les vaches nourries \u00e0 20 ppm et celles nourries \u00e0 9 ppm de mangan\u00e8se provenant de Zinpro Availa Mn. Cependant, les vaches nourries avec 20 ppm de mangan\u00e8se provenant de Zinpro Availa Mn ont connu une r\u00e9duction de 50% de la pr\u00e9valence de la fi\u00e8vre du lait par rapport aux vaches nourries avec 9 ppm. Seulement 2,1% des vaches nourries avec 20 ppm de Zinpro Availa Mn ont \u00e9t\u00e9 trait\u00e9es pour la fi\u00e8vre du lait, contre 4,2% des vaches recevant 9 ppm.\u00a0<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Le risque de r\u00e9forme n'\u00e9tait pas significativement diff\u00e9rent entre les deux groupes, mais les vaches nourries avec 20 ppm de mangan\u00e8se provenant de Zinpro Availa Mn pr\u00e9sentaient une r\u00e9duction de 62% du risque de mortalit\u00e9 par rapport \u00e0 9 ppm. Le syst\u00e8me immunitaire, lorsqu'il est activ\u00e9, utilise beaucoup de calcium. Ainsi, comme le mangan\u00e8se am\u00e9liore la fonction immunitaire et r\u00e9duit la fi\u00e8vre du lait, un producteur laitier peut conna\u00eetre moins de pertes dans son exploitation. Les vaches nourries avec 9 ppm de mangan\u00e8se provenant des oligo-\u00e9l\u00e9ments de performance ont connu une perte de mortalit\u00e9 de 6,1% contre seulement 2,3% pour les vaches nourries avec la quantit\u00e9 la plus \u00e9lev\u00e9e.\u00a0<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Nous avons \u00e9galement constat\u00e9 que l'impact de la suppl\u00e9mentation en mangan\u00e8se \u00e9tait imm\u00e9diat d\u00e8s le d\u00e9but de la lactation. Parmi les vaches ayant re\u00e7u 9 ppm de mangan\u00e8se provenant de Zinpro Availa Mn, 85% de celles qui sont mortes l'ont \u00e9t\u00e9 au cours des 30 premiers jours de lactation. Parmi les vaches ayant re\u00e7u 20 ppm de Zinpro Availa Mn, 57% sont mortes au cours des 30 premiers jours de lactation.\u00a0<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Un retour sur investissement sain<\/h2>\n\n\n\n

Sur la base des donn\u00e9es \u00e9conomiques de 2020, l'apport de 20 ppm contre 9 ppm de mangan\u00e8se provenant de min\u00e9raux traces de performance a permis un retour sur investissement sup\u00e9rieur \u00e0 5 pour 1 gr\u00e2ce \u00e0 des co\u00fbts de remplacement inf\u00e9rieurs. <\/p>\n\n\n\n

L'\u00e9tude montre clairement l'int\u00e9r\u00eat non seulement d'augmenter le niveau de suppl\u00e9mentation en mangan\u00e8se, mais aussi de veiller \u00e0 ce qu'une plus grande partie de cette suppl\u00e9mentation provienne d'une source plus biodisponible, comme les oligo-\u00e9l\u00e9ments de performance. <\/p>\n\n\n\n

Pour en savoir plus sur l'int\u00e9r\u00eat d'inclure Zinpro Availa Mn dans votre programme de nutrition des vaches laiti\u00e8res,contactez votre repr\u00e9sentant Zinpro d\u00e8s aujourd'hui<\/a>. <\/p>","protected":false},"excerpt":{"rendered":"

Le mangan\u00e8se est essentiel \u00e0 la sant\u00e9 globale des vaches laiti\u00e8res, mais les recommandations du CNR en mati\u00e8re de suppl\u00e9mentation ne sont pas suffisantes pour optimiser la production. D\u00e9couvrez comment le mangan\u00e8se des oligo-\u00e9l\u00e9ments de performance peut r\u00e9duire la fi\u00e8vre du lait et am\u00e9liorer les performances des vaches laiti\u00e8res.<\/p>","protected":false},"author":38,"featured_media":57265,"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":[2683,2694,2701],"species":[940],"class_list":["post-57261","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-animal-performance","tag-mortality","tag-transition-cow-management"],"acf":[],"yoast_head":"\nSource Matters: Manganese Supplementation Impacts Dairy Cow Performance – Zinpro\u00ae<\/title>\n<meta name=\"description\" content=\"Blog posts from Zinpro\u00ae about Source Matters: Manganese Supplementation Impacts Dairy Cow Performance . 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