{"id":2740,"date":"2023-01-01T06:41:19","date_gmt":"2023-01-01T05:41:19","guid":{"rendered":"https:\/\/awecadvisors.org\/aspectes-de-benestar-relacionats-amb-les-metritis-en-vaques-de-llet\/"},"modified":"2024-05-07T14:31:12","modified_gmt":"2024-05-07T13:31:12","slug":"aspectes-de-benestar-relacionats-amb-les-metritis-en-vaques-de-llet","status":"publish","type":"post","link":"https:\/\/awecadvisors.org\/ca\/animals-de-granja\/aspectes-de-benestar-relacionats-amb-les-metritis-en-vaques-de-llet\/","title":{"rendered":"Aspectes de benestar relacionats amb les metritis en vaques de llet"},"content":{"rendered":"<p><strong>Eva Mainau, Pol Llonch, D\u00e9borah Temple, Xavier Manteca<\/strong><\/p>\n<p><a href=\"https:\/\/awecadvisors.org\/wp-content\/uploads\/2023\/01\/AWEC_22_metritis_ES.pdf\" target=\"_blank\" rel=\"noopener\">Descarregar PDF<\/a><\/p>\n<p><a href=\"https:\/\/awecadvisors.org\/wp-content\/uploads\/2023\/01\/AWEC-_FS22_Metritis_REFS_ESP.pdf\" target=\"_blank\" rel=\"noopener\">Refer\u00e8ncies<\/a><\/p>\n<p>Gener 2023<\/p>\n<p>La metritis \u00e9s una inflamaci\u00f3 de l&#8217;\u00fater (de la cavitat i la paret uterina). Passa durant els 21 dies posteriors al part, per\u00f2 sol observar-se m\u00e9s sovint els 10 primers dies despr\u00e9s del part. La metritis es caracteritza per un \u00fater anormalment engrandit i una secreci\u00f3 viscosa, blanca i purulenta o f\u00e8tida, aquosa i de color marr\u00f3 vermell\u00f3s en el pitjor dels casos.<\/p>\n<h2>Les metritis causen p\u00e8rdues productives i econ\u00f2miques<\/h2>\n<p>La incid\u00e8ncia de metritis a les vaques lleteres oscil\u00b7la entre el 15% i el 20%, encara que pot afectar fins al 40% de les vaques, depenent de l&#8217;explotaci\u00f3 i l&#8217;etapa de lactaci\u00f3.<\/p>\n<p>La metritis s&#8217;ha associat a una disminuci\u00f3 de la producci\u00f3 de llet, un baix rendiment reproductiu (retard en la inseminaci\u00f3 i reducci\u00f3 de les taxes de concepci\u00f3) i un risc m\u00e9s alt de baixes involunt\u00e0ries durant la lactaci\u00f3.<\/p>\n<p>El cost mitj\u00e0 total estimat de cada cas de metritis oscil\u00b7la entre els 106\u20ac i els 490\u20ac. Aquesta variaci\u00f3 dep\u00e8n del preu de la llet, seguit del cost del tractament, el cost de la reposici\u00f3 i el cost de l&#8217;alimentaci\u00f3.<\/p>\n<h2>Classificaci\u00f3 de les metritis i agents causants<\/h2>\n<p>Despr\u00e9s del part, les vaques lleteres presenten un cert grau de contaminaci\u00f3 bacteriana dins de l&#8217;\u00fater, per\u00f2 aix\u00f2 no est\u00e0 necess\u00e0riament associat amb la metritis cl\u00ednica. L&#8217;aparici\u00f3 de metritis dep\u00e8n de la resposta immunit\u00e0ria de la vaca, aix\u00ed com del nombre i l&#8217;esp\u00e8cie de bacteris presents.<\/p>\n<p>Les metritis poden estar o no associades amb l&#8217;aparici\u00f3 de signes cl\u00ednics, i aix\u00f2 determina la gravetat de la malaltia (de grau 1, o lleu, a grau 3, o greu):<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1196\" src=\"https:\/\/awecadvisors.org\/wp-content\/uploads\/2023\/09\/baixa.png\" alt=\"\" width=\"651\" height=\"326\" srcset=\"https:\/\/awecadvisors.org\/wp-content\/uploads\/2023\/09\/baixa.png 651w, https:\/\/awecadvisors.org\/wp-content\/uploads\/2023\/09\/baixa-480x240.png 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 651px, 100vw\" \/><\/p>\n<p>El dolor es pot classificar segons el lloc d&#8217;origen:<\/p>\n<ul>\n<li><strong>Dolor visceral:<\/strong> prov\u00e9 de l&#8217;activaci\u00f3 dels nociceptors (receptors del dolor) de les v\u00edsceres tor\u00e0ciques, p\u00e8lviques o abdominals. El dolor visceral \u00e9s dif\u00fas, dif\u00edcil de localitzar i sovint es refereix a una estructura distant, generalment superficial.<\/li>\n<li><strong>Dolor som\u00e0tic:<\/strong> prov\u00e9 de l&#8217;activaci\u00f3 dels nociceptors de la pell o altres teixits superficials, \u00e9s agut, ben definit i clarament localitzat.<\/li>\n<\/ul>\n<h2>Les metritis s\u00f3n una malaltia dolorosa<\/h2>\n<p>D&#8217;acord amb diverses enquestes realitzades a ramaders i veterinaris, la metritis aguda en vaques de llet va rebre una puntuaci\u00f3 de dolor entre 4 i 6 punts sobre una escala de 0 a 10. Les vaques amb metritis sovint mostren tant signes cl\u00ednics de <strong> malaltia<\/strong> com <strong>dolor<\/strong>, cosa que indueix a mostrar canvis fisiol\u00f2gics i de comportament, que varien segons la gravetat de la malaltia.<\/p>\n<p>Les vaques amb metritis mostren diversos canvis de <strong>comportaments associats a malaltia<\/strong>, com ara una reducci\u00f3 del consum d&#8217;aliment i el temps de rumia, una disminuci\u00f3 de l&#8217;activitat i un augment del temps que es queden ajagudes.<\/p>\n<p>L&#8217;alteraci\u00f3 en els patrons d&#8217;activitat degut a la metritis \u00e9s m\u00e9s pronunciada a les vaques prim\u00edpares que a les mult\u00edpares. Despr\u00e9s del part, les vaques prim\u00edpares mostren una resposta inflamat\u00f2ria exacerbada (augment de les prote\u00efnes de fase aguda, com l&#8217;haptoglobina), en comparaci\u00f3 de les vaques mult\u00edpares. Aix\u00f2 suggereix que el sistema immunol\u00f2gic de les vaques prim\u00edpares \u00e9s m\u00e9s reactiu als est\u00edmuls inflamatoris i pot comportar un augment de les citocines circulants. L&#8217;augment del temps ajagudes observat en vaques amb metritis cl\u00ednica podria estar associat a l&#8217;acci\u00f3 de les citocines.<\/p>\n<p>Les vaques amb metritis utilitzen menys els raspalls que les vaques sanes. L&#8217;\u00fas dels raspalls \u00e9s un exemple d&#8217;activitat de prioritat baixa; aix\u00f2 significa que \u00e9s un comportament que t\u00edpicament disminueix quan els recursos energ\u00e8tics s\u00f3n limitats o quan augmenta el cost per fer aquesta activitat.<\/p>\n<p>Les vaques amb metritis, a m\u00e9s d&#8217;estar m\u00e9s temps ajagudes, realitzen un nombre m\u00e9s elevat d&#8217;intents per tombar-se, possiblement associat al dolor durant aquest moviment. Les vaques amb metritis cl\u00ednica tamb\u00e9 mostren signes espec\u00edfics de dolor, com l&#8217;arqueig de l&#8217;esquena durant la palpaci\u00f3 rectal (amb palpaci\u00f3 uterina o sense), cosa que suggereix que la metritis cl\u00ednica est\u00e0 associada amb dolor visceral. El dolor visceral produ\u00eft per la metritis pot comportar dolor som\u00e0tic i hiperalg\u00e8sia (augment de la sensibilitat al dolor), cosa que fa que augmenti la sensibilitat de les \u00e0rees de la pell en contacte amb el terra durant els moviments per tombar-se.<\/p>\n<p><strong>Indicadors dels comportaments associats a les metritis a les vaques de llet<\/strong><br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1197\" src=\"https:\/\/awecadvisors.org\/wp-content\/uploads\/2023\/09\/baixa_.png\" alt=\"\" width=\"1029\" height=\"513\" srcset=\"https:\/\/awecadvisors.org\/wp-content\/uploads\/2023\/09\/baixa_.png 1029w, https:\/\/awecadvisors.org\/wp-content\/uploads\/2023\/09\/baixa_-980x489.png 980w, https:\/\/awecadvisors.org\/wp-content\/uploads\/2023\/09\/baixa_-480x239.png 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) 1029px, 100vw\" \/><\/p>\n<p>Pel que fa a <strong>els indicadors fisiol\u00f2gics<\/strong>, les concentracions de marcadors d&#8217;inflamaci\u00f3, estr\u00e8s i dolor (com ara la subst\u00e0ncia P o l&#8217;haptoglobina) es troben augmentats en vaques amb metritis. Al per\u00edode postpart, les vaques amb metritis tenen els nivells d&#8217;haptoglobina un 20% m\u00e9s elevats que les vaques sanes.<\/p>\n<p>A m\u00e9s, durant el per\u00edode de transici\u00f3 peripart les vaques solen estar en balan\u00e7 energ\u00e8tic negatiu, especialment en vaques d&#8217;alta producci\u00f3. El balan\u00e7 energ\u00e8tic negatiu es defineix com un retard en l&#8217;augment de consum d&#8217;aliment en relaci\u00f3 amb l&#8217;increment de les demandes energ\u00e8tiques degudes a la gestaci\u00f3, al part i a la producci\u00f3 de llet. El balan\u00e7 energ\u00e8tic negatiu i la metritis estan relacionats: per cada 1 Kg de disminuci\u00f3 en el consum de mat\u00e8ria seca a la setmana pr\u00e8via al part, les vaques tenen gaireb\u00e9 tres vegades m\u00e9s probabilitats de ser diagnosticades amb metritis. El balan\u00e7 energ\u00e8tic negatiu afecta la funci\u00f3 del sistema immune de les vaques, augmentant la susceptibilitat a infeccions uterines, com ara la metritis.<\/p>\n<blockquote>\n<h3><span style=\"color: #f8475b;\"><strong><em>\u00abLes vaques amb metritis sovint presenten signes cl\u00ednics de malaltia i dolor, cosa que indueix canvis fisiol\u00f2gics i de comportament\u00bb<\/em><\/strong><\/span><\/h3>\n<\/blockquote>\n<h2>Prevenci\u00f3 i recomanacions de maneig<\/h2>\n<p>El factor de risc m\u00e9s important per a la presentaci\u00f3 de metritis \u00e9s el trauma al tracte genital, seguit de la contaminaci\u00f3 bacteriana. Les vaques han de ser en un ambient net, c\u00f2mode, tranquil i espai\u00f3s per parir. En cas de ser necess\u00e0ria la intervenci\u00f3 durant el part, els ramaders i els veterinaris ho han de realitzar de forma higi\u00e8nica i respectuosa amb el benestar de la vaca.<\/p>\n<p>Per optimitzar el consum d&#8217;aliment de la vaca abans del part i assegurar un funcionament correcte del sistema immune, \u00e9s important que hi hagi un ambient sense estr\u00e8s i una nutrici\u00f3 adequada. L&#8217;allotjament i el maneig de la vaca seca ha de minimitzar l&#8217;estr\u00e8s social, evitant el transport o m\u00faltiples canvis en els grups d&#8217;animals, assegurant un adequat espai a la menjadora (85 cm\/vaca) i espai a l&#8217;\u00e0rea de descans (80% capacitat). Cal assegurar una ventilaci\u00f3 i provisi\u00f3 d&#8217;ombra adequada, amb l&#8217;objectiu de minimitzar l&#8217;estr\u00e8s per calor.<\/p>\n<h2>Reduir del dolor<\/h2>\n<p>La metritis a les vaques lleteres sol tractar-se amb infusions intrauterines o antibi\u00f2tics sist\u00e8mics. Diversos estudis mostren que l&#8217;administraci\u00f3 d&#8217;antiinflamatoris no estero\u00efdals (AINEs) despr\u00e9s del diagn\u00f2stic de metritis, com a tractament de suport als antibi\u00f2tics, millora els rendiments reproductius ja que la taxa de prenyesa augmenta i els intervals part-primer zel s\u00f3n m\u00e9s curts. Els efectes dels AINEs sobre la producci\u00f3 de llet, la involuci\u00f3 uterina o la recuperaci\u00f3 de la infecci\u00f3 uterina no s\u00f3n consistents, ja que alguns estudis troben millores a favor del tractament analg\u00e8sic, per\u00f2 d&#8217;altres no. Tot i aix\u00f2, un assaig cl\u00ednic va suggerir que el tractament de la metritis exclusivament amb AINE pot reduir l&#8217;\u00fas d&#8217;antibi\u00f2tics, amb una evoluci\u00f3 cl\u00ednica molt similar al tractament amb antibi\u00f2tics.<\/p>\n<p>L&#8217;administraci\u00f3 d&#8217;AINE a les vaques amb metritis redueix lleugerament la inflamaci\u00f3 i redueix les conductes associades al dolor, com l&#8217;arqueig de l&#8217;esquena. En vaques mult\u00edpares, l&#8217;\u00fas d&#8217;AINE en combinaci\u00f3 amb antibi\u00f2tics s&#8217;ha associat amb una reducci\u00f3 del temps ajagudes durant cinc dies despr\u00e9s del tractament, cosa que indica una reducci\u00f3 en el comportament associat a malaltia.<\/p>\n<h3>Resum<\/h3>\n<table>\n<tbody>\n<tr>\n<td>La metritis \u00e9s una malaltia amb implicacions econ\u00f2miques i de benestar animal. Les vaques amb metritis sovint presenten tant signes cl\u00ednics de malaltia com dolor, cosa que indueix canvis fisiol\u00f2gics i de comportament. En vaques amb metritis, es recomana utilitzar AINEs, a m\u00e9s d&#8217;antibi\u00f2tics, ja que redueixen dolor i faciliten el retorn al rendiment reproductiu \u00f2ptim.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h3><a href=\"https:\/\/www.boehringer-ingelheim.com\/animal-health\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-4821\" src=\"https:\/\/awecadvisors.org\/wp-content\/uploads\/2021\/03\/BI_Logo-300x169.jpg\" alt=\"\" width=\"213\" height=\"120\" \/><\/a><\/h3>\n<h3>Refer\u00e8ncies<\/h3>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li>Barragan, A.A., Pi\u00f1eiro, J.M., Schuenemann, G.M., Rajala-Schultz, P.J., Sanders, D.E., Lakritz, J., Bas, S. (2018). Assessment of daily activity patterns and biomarkers of pain, inflammation and stress in lactating dairy cows diagnosed with clinical metritis. J. Dairy Sci. 101: 8248-8258.<\/li>\n<li>Lomb, J., Neave, H.W., Weary, D.M., LeBlanc, S.J., Huzzey, J.M., von Keyserlingk, M.A.G. (2018). Changes in feeding, social, and lying behaviors in dairy cows with metritis following treatment with a nonsteroidal anti-inflammatory drug as adjunctive treatment to an antimicrobial. J. Dairy Sci. 101: 4400-4411.<\/li>\n<li>Mainau, E., Llonch, P., Temple, D., Goby, L., Manteca, X. (2022). Alteration in Activity Patterns of Cows as a Result of Pain Due to Health Conditions. Animals 12: 176.<\/li>\n<li>Mandel, R., Nicol, C.J., Whay, H.R., Klement, E. (2017). Short communication: Detection and monitoring of metritis in dairy cows using and automated grooming device. J. Dairy Sci. 100: 5724-5728.<\/li>\n<li>P\u00e9rez-B\u00e1ez, J., Silva, T.V., Risco, C.A., Chebel, R.C., Cunha, F., De Vries, A., Santos, J.E.P., Lima, F.S., Pinedo, P., Schuenemann, G.M., Bicalho, R.C., Gilbert, R.O., Rodrigez-Zas, S., Seabury, C.M., Rosa, G., Thatcher, W.W., Galv\u00e3o, K.N. (2021). The economic cost of metritis in dairy herds. J. Dairy Sci. 104: 3158-3168.<\/li>\n<li>Schmitt, R., Pieper, L., Borchardt, S., Swinkels, J.M., Gelfert, C.-C., Staufenbiel, R. (2022). Effects of a single transdermal administration of flunixin meglumine in early postpartum Holstein Friesian dairy cows: Part 1. Inflammatory and metabolic markers, uterine health, and indicators of pain. J Dairy Sci 12: 105.<\/li>\n<li>Sheldon, I.M. (2019). The Metritis Complex in Cattle. In: Veterinary Reproduction &amp; Obstetrics, Edition 10th, Chapter 23rd. Sheldon, I.M., Molinari, P.C.C., Ormsby, T.J.R., Bromfield, J.J. (2020). Preventing postpartum uterine disease in dairy cattle depends on avoiding, tolerating and resisting pathogenic bacteria. Theriogenology, 150: 158-165.<\/li>\n<li>Stojkov, J., von Keyserlingk, M.A.G., Marchant-Forde, J.N., Weary, D.M. (2015). Assessment of visceral pain associated with metritis in dairy cows. J. Dairy Sci. 98: 5352-5361.<\/li>\n<li>Trimboli, F., Ragusa, M., Piras, C., Lopreiato, V., Britti, D. (2020). Outcomes from Experimental Testing of Nonsteroidal Anti-Inflammatory Drug (NSAID) Administration during the Transition Period of Dairy Cows. Animals 10: 1832.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<span class=\"et_bloom_bottom_trigger\"><\/span>","protected":false},"excerpt":{"rendered":"<p>La metritis \u00e9s una inflamaci\u00f3 de l&#8217;\u00fater (de la cavitat i la paret uterina). Passa durant els 21 dies posteriors al part, per\u00f2 sol observar-se m\u00e9s sovint els 10 primers dies despr\u00e9s del part.<\/p>\n","protected":false},"author":7,"featured_media":1573,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","inline_featured_image":false,"footnotes":""},"categories":[127],"tags":[118],"class_list":["post-2740","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-animals-de-granja","tag-animals-de-granja"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Metritis i dolor en vaques de llet | AWEC<\/title>\n<meta name=\"description\" content=\"Les vaques amb metritis sovint presenten signes cl\u00ednics de malaltia i dolor, cosa que indueix canvis fisiol\u00f2gics i de comportament\" \/>\n<meta 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