

{"id":56771,"date":"2019-06-13T22:00:49","date_gmt":"2019-06-13T22:00:49","guid":{"rendered":"https:\/\/www.zinpro.com\/heat-stress-management-critical-in-poultry-production\/"},"modified":"2023-07-19T13:09:53","modified_gmt":"2023-07-19T18:09:53","slug":"heat-stress-management-critical-in-poultry-production","status":"publish","type":"post","link":"https:\/\/www.zinpro.com\/pt\/resource-center\/blog\/heat-stress-management-critical-in-poultry-production\/","title":{"rendered":"Gerenciamento do estresse t\u00e9rmico \u00e9 fundamental na produ\u00e7\u00e3o av\u00edcola"},"content":{"rendered":"<p>O estresse por calor pode contribuir para muitos desafios de produ\u00e7\u00e3o e pode custar caro para os produtores de aves. Durante o estresse por calor, as aves comem menos do que deveriam para reduzir a temperatura corporal, o que leva a uma redu\u00e7\u00e3o no consumo de energia metaboliz\u00e1vel. Os efeitos prejudiciais do estresse t\u00e9rmico em frangos de corte e galinhas poedeiras v\u00e3o desde a redu\u00e7\u00e3o do crescimento e da produ\u00e7\u00e3o de ovos at\u00e9 a diminui\u00e7\u00e3o da qualidade e do bem-estar da carne e dos ovos.&nbsp;<\/p>\n\n\n\n<p>A vida produtiva das aves \u00e9 muito mais curta do que a de outros animais: cerca de 47 dias para frangos de corte e at\u00e9 um ano para galinhas poedeiras. Por esse motivo, a margem de erro no manejo do estresse t\u00e9rmico \u00e9 muito menor do que em animais maiores, pois h\u00e1 menos tempo para recupera\u00e7\u00e3o.&nbsp;<\/p>\n\n\n\n<p>Os desafios de produ\u00e7\u00e3o decorrentes do estresse t\u00e9rmico podem ser observados durante a primeira semana de vida da ave, pois os pintinhos jovens n\u00e3o desenvolvem totalmente a capacidade de regular a temperatura corporal. O trato digestivo mostra sinais de fraqueza e acelera o tr\u00e2nsito de alimentos, resultando em uma redu\u00e7\u00e3o consider\u00e1vel da digest\u00e3o e da absor\u00e7\u00e3o de nutrientes.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-how-do-chickens-dissipate-body-heat\">Como as galinhas dissipam o calor do corpo? <\/h3>\n\n\n\n<p>Ao contr\u00e1rio de outros animais, as aves n\u00e3o t\u00eam gl\u00e2ndulas sudor\u00edparas para ajudar na perda de calor. H\u00e1 quatro maneiras principais pelas quais as aves removem o excesso de calor do corpo: radia\u00e7\u00e3o, condu\u00e7\u00e3o, convec\u00e7\u00e3o e, quando essas tr\u00eas maneiras n\u00e3o s\u00e3o suficientes, por evapora\u00e7\u00e3o.&nbsp;<\/p>\n\n\n\n<p>A radia\u00e7\u00e3o ocorre quando a ave transfere o calor da superf\u00edcie de sua pele, atrav\u00e9s do ar, para outro objeto, inclusive outras aves. \u00c9 nesse ponto que a alta densidade dos lotes se torna um desafio durante os meses quentes de ver\u00e3o.&nbsp;<\/p>\n\n\n\n<p>As aves dissipam o calor do corpo por condu\u00e7\u00e3o, transferindo-o para objetos mais frios com os quais entram em contato, como comedouros, ripas ou \u00e1gua de aspersores. Isso tamb\u00e9m pode se tornar um desafio, pois os aspersores aumentam a umidade, aumentando a sensa\u00e7\u00e3o t\u00e9rmica do calor.&nbsp;<\/p>\n\n\n\n<p>A convec\u00e7\u00e3o ocorre quando o vento entra em contato com a pele e leva o calor para longe. As galinhas geralmente levantam as asas para expor a pele com penas leves e aumentar a \u00e1rea de superf\u00edcie para a dissipa\u00e7\u00e3o do calor corporal.&nbsp;<\/p>\n\n\n\n<p>Quando a temperatura corporal de uma ave atinge 41\u00b0 C (106\u00b0 F), a efici\u00eancia da radia\u00e7\u00e3o, condu\u00e7\u00e3o e convec\u00e7\u00e3o \u00e9 reduzida, e a evapora\u00e7\u00e3o da \u00e1gua do trato respirat\u00f3rio, por meio da respira\u00e7\u00e3o ofegante, torna-se o principal mecanismo de perda de calor. A evapora\u00e7\u00e3o de um grama de \u00e1gua \u00e9 capaz de dissipar 540 calorias de energia de manuten\u00e7\u00e3o. Al\u00e9m disso, as cavidades nasais das aves funcionam filtrando a poeira e as bact\u00e9rias do ar que entra no trato respirat\u00f3rio. O uso do sistema respirat\u00f3rio para a perda de calor por evapora\u00e7\u00e3o pode levar a um aumento na incid\u00eancia de segundas infec\u00e7\u00f5es bacterianas. Eventualmente, sem al\u00edvio do calor, as aves geralmente se cansam devido \u00e0 exaust\u00e3o pelo calor.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-heat-stress-in-poultry-leads-to-inflammation\">Estresse t\u00e9rmico em aves leva \u00e0 inflama\u00e7\u00e3o<\/h3>\n\n\n\n<p>Quando a ingest\u00e3o de ra\u00e7\u00e3o \u00e9 reduzida durante o estresse por calor, as aves tamb\u00e9m reduzem o fluxo sangu\u00edneo no trato gastrointestinal, o que leva a uma redu\u00e7\u00e3o na quantidade de oxig\u00eanio (hip\u00f3xia) e ao estresse oxidativo nos tecidos intestinais. Como resultado, as jun\u00e7\u00f5es estreitas que mant\u00eam essas c\u00e9lulas epiteliais (enter\u00f3citos) unidas enfraquecem, aumentando a permeabilidade e permitindo que os pat\u00f3genos e suas toxinas entrem no trato gastrointestinal. Essa \u00e9 uma condi\u00e7\u00e3o chamada de intestino perme\u00e1vel e pode resultar em inflama\u00e7\u00e3o cr\u00f4nica. Essa inflama\u00e7\u00e3o acionar\u00e1 o sistema imunol\u00f3gico para consumir n\u00edveis significativos de nutrientes para lidar com a inflama\u00e7\u00e3o, reduzindo a quantidade de nutrientes dispon\u00edveis para o crescimento muscular ou a produ\u00e7\u00e3o de ovos.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-heat-stress-impacts-eggshell-formation\">O estresse t\u00e9rmico afeta a forma\u00e7\u00e3o da casca do ovo<\/h3>\n\n\n\n<p>Quando as galinhas ofegam, elas perdem CO2 por meio da respira\u00e7\u00e3o, o que faz com que o pH do sangue se torne mais alcalino e reduz a quantidade de c\u00e1lcio ionizado no sangue, o que pode levar a problemas \u00f3sseos.&nbsp;<\/p>\n\n\n\n<p>No caso das galinhas poedeiras, como elas precisam de uma grande quantidade de c\u00e1lcio para a forma\u00e7\u00e3o da casca do ovo, isso geralmente resulta no desenvolvimento de ovos de casca fina ou menores e\/ou em uma diminui\u00e7\u00e3o na produ\u00e7\u00e3o de ovos. No caso dos frangos de corte, os produtores geralmente observam uma redu\u00e7\u00e3o adicional no consumo de ra\u00e7\u00e3o, na efici\u00eancia alimentar e na taxa de crescimento.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-performance-trace-mineral-nutrition-for-heat-stress-management\">Nutri\u00e7\u00e3o com microminerais para o gerenciamento do estresse t\u00e9rmico<\/h3>\n\n\n\n<p>O gerenciamento dos desafios de produ\u00e7\u00e3o relacionados ao estresse t\u00e9rmico na produ\u00e7\u00e3o de aves pode ser atenuado com o ajuste do programa de nutri\u00e7\u00e3o das aves. As principais mudan\u00e7as na dieta nos meses de ver\u00e3o devem sempre se concentrar na redu\u00e7\u00e3o do estresse oxidativo, na preserva\u00e7\u00e3o da integridade dos tecidos epiteliais do trato gastrointestinal e no aumento da toler\u00e2ncia ao calor.&nbsp;<\/p>\n\n\n\n<p>As principais mudan\u00e7as nutricionais que os produtores de aves e os nutricionistas devem considerar durante os meses quentes de ver\u00e3o incluem o seguinte:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Alimenta\u00e7\u00e3o com uma dieta mais rica em nutrientes, para compensar a redu\u00e7\u00e3o do consumo de ra\u00e7\u00e3o&nbsp;<\/li>\n\n\n\n<li>Incluir minerais tra\u00e7os de desempenho nas dietas, para aumentar a capacidade antioxidante e a toler\u00e2ncia t\u00e9rmica do organismo das aves.&nbsp;<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-reducing-oxidative-stress-increasing-thermal-tolerance\">Redu\u00e7\u00e3o do estresse oxidativo, aumento da toler\u00e2ncia t\u00e9rmica<\/h3>\n\n\n\n<p>Durante os meses quentes de ver\u00e3o, o uso de minerais de desempenho \u00e9 crucial. Os sistemas antioxidantes mais importantes no organismo animal dependem do zinco, mangan\u00eas, cobre e sel\u00eanio. Eles servem como cofatores de mol\u00e9culas e para a ativa\u00e7\u00e3o de enzimas, como o sistema SOD (super\u00f3xido dismutase) e a glutationa peroxidase (GPx). O estresse oxidativo ocorre quando os radicais livres e os antioxidantes est\u00e3o fora de equil\u00edbrio. Esses sistemas antioxidantes funcionam removendo os radicais livres e protegendo as membranas celulares do estresse oxidativo.&nbsp;<\/p>\n\n\n\n<p>O zinco tamb\u00e9m desempenha um papel essencial na forma\u00e7\u00e3o dos componentes estruturais dos tecidos, mol\u00e9culas e c\u00e9lulas epiteliais presentes no intestino. Pesquisas mostram que a alimenta\u00e7\u00e3o com zinco de <a href=\"https:\/\/www.zinpro.com\/pt\/products\/availa-mins\/availa-zn\/\" target=\"_blank\" rel=\"noreferrer noopener\">Zinpro\u00ae Availa\u00ae Zn<\/a> fortalece as liga\u00e7\u00f5es entre as c\u00e9lulas epiteliais do trato gastrointestinal, ajudando a manter as jun\u00e7\u00f5es estreitas durante um desafio e diminuindo a ocorr\u00eancia de inflama\u00e7\u00e3o intestinal relacionada ao intestino perme\u00e1vel.&nbsp;<\/p>\n\n\n\n<p>Cromo de <a href=\"https:\/\/www.zinpro.com\/pt\/product\/zinpro-availa-cr\/\" target=\"_blank\" rel=\"noreferrer noopener\">Zinpro\u00ae Availa\u00ae Cr<\/a> ou <a href=\"https:\/\/www.zinpro.com\/pt\/products\/original-line\/microplex\/\" target=\"_blank\" rel=\"noreferrer noopener\">Zinpro\u00ae MICROPLEX<\/a> pode aumentar a toler\u00e2ncia t\u00e9rmica, pois ajuda a reduzir o n\u00edvel de corticosterona - envolvida na regula\u00e7\u00e3o da energia, nas rea\u00e7\u00f5es imunol\u00f3gicas e nas respostas ao estresse - nas aves. Os n\u00edveis elevados de corticosterona fazem com que os animais se comportem de maneira agitada, gastem energia e, por fim, reduzam o consumo de ra\u00e7\u00e3o. <a href=\"https:\/\/www.zinpro.com\/pt\/performance-trace-minerals-help-mitigate-impact-of-heat-stress-in-poultry\/\" target=\"_blank\" rel=\"noreferrer noopener\">Redu\u00e7\u00e3o dos n\u00edveis de corticosterona com Zinpro Availa Cr ou Zinpro MICROPLEX<\/a> pode ajudar a manter os animais calmos e mais dispostos a comer durante eventos de estresse por calor.\u00a0<\/p>\n\n\n\n<p>O estresse t\u00e9rmico pode resultar em desafios de produ\u00e7\u00e3o que custam caro para os produtores de aves. Incluindo minerais de desempenho em seu programa de nutri\u00e7\u00e3o av\u00edcola, voc\u00ea pode ajudar a mitigar esses desafios e tornar sua opera\u00e7\u00e3o mais lucrativa.&nbsp;<\/p>\n\n\n\n<p>Entre em contato com um representante da Zinpro hoje mesmo para saber mais sobre a inclus\u00e3o de Zinpro Performance Minerals\u00ae, como <a href=\"https:\/\/www.zinpro.com\/pt\/products\/availa-mins\/availa-cr\/\" target=\"_blank\" rel=\"noreferrer noopener\">Zinpro Availa Cr<\/a>, <a href=\"https:\/\/www.zinpro.com\/pt\/products\/original-line\/microplex\/\" target=\"_blank\" rel=\"noreferrer noopener\">Zinpro MICROPLEX<\/a>, <a href=\"https:\/\/www.zinpro.com\/pt\/products\/availa-mins\/availa-zn\/\" target=\"_blank\" rel=\"noreferrer noopener\">Zinpro Availa Zn<\/a>, <a href=\"https:\/\/www.zinpro.com\/pt\/products\/availa-mins\/availa-mn\/\" target=\"_blank\" rel=\"noreferrer noopener\">Zinpro\u00ae Availa\u00ae Mn<\/a>, <a href=\"https:\/\/www.zinpro.com\/pt\/products\/availa-mins\/availa-cu\/\" target=\"_blank\" rel=\"noreferrer noopener\">Zinpro\u00ae Availa\u00ae Cu<\/a> e <a href=\"https:\/\/www.zinpro.com\/pt\/products\/availa-mins\/availa-se\/\" target=\"_blank\" rel=\"noreferrer noopener\">Zinpro\u00ae Availa\u00ae Se<\/a> em seus programas de nutri\u00e7\u00e3o de gado e aves.&nbsp;<\/p>\n\n\n\n<p><em>Observa\u00e7\u00e3o: nem todos os produtos est\u00e3o dispon\u00edveis em todos os mercados.<\/em>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Voc\u00ea sabia que os efeitos do estresse t\u00e9rmico s\u00e3o percebidos mais cedo nas aves do que em outros animais porque sua vida produtiva \u00e9 muito mais curta? Compartilhamos por que o controle do estresse t\u00e9rmico \u00e9 fundamental e como os minerais de desempenho podem ajudar.<\/p>","protected":false},"author":45,"featured_media":56772,"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":[2693,2683,2692,2715,2684,2689,2686],"species":[942],"class_list":["post-56771","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-animal-husbandry","tag-animal-performance","tag-animal-welfare","tag-eggshell-quality","tag-health","tag-heat-stress","tag-inflammation"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.6 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Heat Stress Management Critical in Poultry Production &#8211; Zinpro\u00ae<\/title>\n<meta name=\"description\" content=\"posts from Zinpro\u00ae about Heat Stress Management Critical in Poultry Production . Read more here.\" \/>\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\/pt\/resource-center\/blog\/heat-stress-management-critical-in-poultry-production\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Heat Stress Management Critical in Poultry Production &#8211; Zinpro\u00ae\" \/>\n<meta property=\"og:description\" content=\"posts from Zinpro\u00ae about Heat Stress Management Critical in Poultry Production . 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