{"id":149,"date":"2026-04-05T17:33:22","date_gmt":"2026-04-05T20:33:22","guid":{"rendered":"https:\/\/dev.mvmweb.com.br\/marcafogo\/?p=149"},"modified":"2026-05-29T19:21:30","modified_gmt":"2026-05-29T22:21:30","slug":"estudo-compara-marca-a-fogo-e-a-frio-e-revela-diferencas-na-dor-sentida-pelos-animais","status":"publish","type":"post","link":"https:\/\/deploysystem.com.br\/marcafogo\/estudo-compara-marca-a-fogo-e-a-frio-e-revela-diferencas-na-dor-sentida-pelos-animais\/","title":{"rendered":"Estudo compara marca a fogo e a frio e revela diferen\u00e7as na dor sentida pelos animais"},"content":{"rendered":"[vc_row type=”in_container” full_screen_row_position=”middle” column_margin=”default” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” scene_position=”center” text_color=”dark” text_align=”left” row_border_radius=”none” row_border_radius_applies=”bg” overflow=”visible” overlay_strength=”0.3″ gradient_direction=”left_to_right” shape_divider_position=”bottom” bg_image_animation=”none”][vc_column column_padding=”no-extra-padding” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” column_element_direction_desktop=”default” column_element_spacing=”default” desktop_text_alignment=”default” tablet_text_alignment=”default” phone_text_alignment=”default” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_backdrop_filter=”none” column_shadow=”none” column_border_radius=”none” column_link_target=”_self” column_position=”default” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/1″ tablet_width_inherit=”default” animation_type=”default” bg_image_animation=”none” border_type=”simple” column_border_width=”none” column_border_style=”solid”][image_with_animation image_url=”497″ image_size=”full” animation_type=”entrance” animation=”None” animation_movement_type=”transform_y” hover_animation=”none” alignment=”” border_radius=”none” box_shadow=”none” image_loading=”default” max_width=”100%” max_width_mobile=”default”][\/vc_column][\/vc_row][vc_row type=”in_container” full_screen_row_position=”middle” column_margin=”default” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” scene_position=”center” top_padding=”2%” constrain_group_1=”yes” bottom_padding=”2%” text_color=”dark” text_align=”left” row_border_radius=”none” row_border_radius_applies=”bg” overflow=”visible” overlay_strength=”0.3″ gradient_direction=”left_to_right” shape_divider_position=”bottom” bg_image_animation=”none” gradient_type=”default” shape_type=””][vc_column column_padding=”no-extra-padding” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” column_element_direction_desktop=”default” column_element_spacing=”default” desktop_text_alignment=”default” tablet_text_alignment=”default” phone_text_alignment=”default” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_backdrop_filter=”none” column_shadow=”none” column_border_radius=”none” column_link_target=”_self” column_position=”default” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/1″ tablet_width_inherit=”default” animation_type=”default” bg_image_animation=”none” border_type=”simple” column_border_width=”none” column_border_style=”solid”][vc_column_text text_direction=”default”]\n

O que o estudo avaliou<\/b><\/span><\/h3>\n

Pesquisadores da Texas A&M University testaram os efeitos comportamentais e fisiol\u00f3gicos da <\/span>marca a fogo<\/b>, <\/span>marca a frio<\/b> e de um <\/span>grupo controle (simula\u00e7\u00e3o sem marca)<\/b> em bezerros mesti\u00e7os. Eles analisaram a <\/span>resposta de estresse e dor<\/b> por meio da <\/span>frequ\u00eancia card\u00edaca, cortisol, epinefrina e temperatura da pele<\/b>.<\/span><\/p>\n

Principais achados<\/b><\/span><\/h3>\n
    \n
  • Bezerros marcados a <\/span>fogo tiveram maior libera\u00e7\u00e3o de epinefrina<\/b>, indicando <\/span>dor aguda mais intensa<\/b>;<\/span><\/li>\n
  • \u00a0A <\/span>marca a frio causou menos resposta fisiol\u00f3gica imediata<\/b> e inflama\u00e7\u00e3o diferente da marca a fogo;<\/span><\/li>\n
  • Todos os bezerros apresentaram aumento de <\/span>cortisol e frequ\u00eancia card\u00edaca<\/b>, mas o <\/span>resfriamento vascular na marca a frio<\/b> parece ter amenizado os danos;<\/span><\/li>\n
  • \u00a0A vocaliza\u00e7\u00e3o foi baixa em todos os grupos, possivelmente por estarem isolados dos outros animais (sem est\u00edmulo social).<\/span><\/li>\n<\/ul>\n

    O que isso significa na pr\u00e1tica<\/b><\/span><\/h3>\n

    Embora a marca a frio tamb\u00e9m provoque dor e rea\u00e7\u00e3o de estresse, <\/span>a marca a fogo provoca uma dor mais intensa no momento da aplica\u00e7\u00e3o<\/b>, como revelado pela alta libera\u00e7\u00e3o de epinefrina \u2014 um marcador cl\u00e1ssico de dor aguda.<\/span><\/p>\n

    Al\u00e9m disso, os danos causados pelo calor podem <\/span>reduzir o valor do couro<\/b> e prolongar o desconforto do animal.<\/span>[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=”full_width_background” full_screen_row_position=”middle” column_margin=”default” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” bg_color=”#5f3913″ scene_position=”center” text_color=”dark” text_align=”left” row_border_radius=”none” row_border_radius_applies=”bg” overflow=”visible” overlay_strength=”0.3″ gradient_direction=”left_to_right” shape_divider_position=”bottom” bg_image_animation=”none” gradient_type=”default” shape_type=””][vc_column column_padding=”padding-2-percent” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” column_element_direction_desktop=”default” column_element_spacing=”default” desktop_text_alignment=”default” tablet_text_alignment=”default” phone_text_alignment=”default” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_backdrop_filter=”none” font_color=”#f9ae3b” column_shadow=”none” column_border_radius=”none” column_link_target=”_self” column_position=”default” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/1″ tablet_width_inherit=”default” animation_type=”default” bg_image_animation=”none” border_type=”simple” column_border_width=”none” column_border_style=”solid” column_padding_type=”default” gradient_type=”default”][vc_column_text text_direction=”default”]Esse estudo refor\u00e7a a necessidade de <\/span>buscar alternativas menos agressivas<\/b>, como brincos, tatuagens e identifica\u00e7\u00e3o eletr\u00f4nica.<\/span>[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=”in_container” full_screen_row_position=”middle” column_margin=”default” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” scene_position=”center” top_padding=”2%” constrain_group_1=”yes” bottom_padding=”2%” text_color=”dark” text_align=”left” row_border_radius=”none” row_border_radius_applies=”bg” overflow=”visible” overlay_strength=”0.3″ gradient_direction=”left_to_right” shape_divider_position=”bottom” bg_image_animation=”none” gradient_type=”default” shape_type=””][vc_column column_padding=”no-extra-padding” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” column_element_direction_desktop=”default” column_element_spacing=”default” desktop_text_alignment=”default” tablet_text_alignment=”default” phone_text_alignment=”default” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_backdrop_filter=”none” column_shadow=”none” column_border_radius=”none” column_link_target=”_self” column_position=”default” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/1″ tablet_width_inherit=”default” animation_type=”default” bg_image_animation=”none” border_type=”simple” column_border_width=”none” column_border_style=”solid”][vc_column_text text_direction=”default”]Refer\u00eancia:<\/b><\/p>\n

    Lay, D.C. Jr. et al. (1992). <\/span>Behavioral and Physiological Effects of Freeze or Hot-Iron Branding on Crossbred Cattle<\/span><\/em>. Journal of Animal Science<\/em>, 70(2): 330\u2013336. 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