Physiological-metabolic variables of heat stress in cows grazing in silvopastoral systems and in one treeless prairie.
The aim of this work was to analyze changes of physiological and metabolic parameters as indicators of heat stress of cows in pasture systems. The research was carried out from 2011 to 2012 at the Turipaná Agricultural Research Center of Corpoica located in the Caribbean region in Cereté–Colombia. Environmental temperature (T) and relative humidity (H) were determined, as well as and rectal temperature (RT), skin temperature (ST), respiratory frequency (RF) and the acid-basic status of animals. The variables were measured in the morning (6:00 h) and in the afternoon (13:00 h). Significant Statistical differences were observed (p<0.05) in environmental temperature treatments (T) with 7% and 6% less temperature in p-Arbus-Arbor y p-Arbor, respectively, compared with grass treatment. There was a significant hour effect on T and H (p<0.05) and a significant treatment-hour interaction on T (p<0.05). TP and FR showed a significant treatment-hour interaction per hour (6:00/13:00 h). The results show a positive effect of shadow from trees on the physiological variables. The negative effects observed on the physiological variables of unshaded treatments impacted in a minimal way the metabolic variables suggesting homeostatic responses in the animals under the evaluated stressful environmental conditions.
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Universidad de Costa Rica
2015
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oai:portal.ucr.ac.cr:article192772023-06-16T13:50:00Z Physiological-metabolic variables of heat stress in cows grazing in silvopastoral systems and in one treeless prairie. Variables fisiológicas-metabólicas de estrés calórico en vacas bajo silvopastoreo y pradera sin árboles. Berragán-Hernández, Wilson Andrés Mahecha-Ledesma, Liliana Cajas-Jirón, Yasmin Socorro bienestar animal estrés térmico sombra de árboles sombra de arbustos. animal welfare heat stress trees shade shrubs shade. The aim of this work was to analyze changes of physiological and metabolic parameters as indicators of heat stress of cows in pasture systems. The research was carried out from 2011 to 2012 at the Turipaná Agricultural Research Center of Corpoica located in the Caribbean region in Cereté–Colombia. Environmental temperature (T) and relative humidity (H) were determined, as well as and rectal temperature (RT), skin temperature (ST), respiratory frequency (RF) and the acid-basic status of animals. The variables were measured in the morning (6:00 h) and in the afternoon (13:00 h). Significant Statistical differences were observed (p<0.05) in environmental temperature treatments (T) with 7% and 6% less temperature in p-Arbus-Arbor y p-Arbor, respectively, compared with grass treatment. There was a significant hour effect on T and H (p<0.05) and a significant treatment-hour interaction on T (p<0.05). TP and FR showed a significant treatment-hour interaction per hour (6:00/13:00 h). The results show a positive effect of shadow from trees on the physiological variables. The negative effects observed on the physiological variables of unshaded treatments impacted in a minimal way the metabolic variables suggesting homeostatic responses in the animals under the evaluated stressful environmental conditions. El presente trabajo tuvo como objetivo valorar cambios en parámetros fisiológicos y metabólicos como indicadores de estrés calórico de vacas bajo pastoreo. El estudio se llevó a cabo en el Centro de Investigación Corpoica Turipaná, Región Caribe, Cereté, Colombia, durante los años 2011-2012. Se determinó la temperatura ambiental (T) y la humedad relativa (H), y en los animales: temperatura rectal (TR), temperatura de piel (TP), frecuencia respiratoria (FR) y el estatus ácido-básico. Las variables fueron medidas en la mañana (6:00 h) y tarde (13:00 h). Se encontró efecto del tratamiento en la temperatura ambiental con 7 y 6% menos temperatura en p-Arbus-Arbor y p-Arbor, respectivamente, comparados con el tratamiento Pasto. Hubo efecto de la hora (p<0,05) en T y H e interacción tratamiento x hora en la T (p<0,05). Las variables TP y FR registraron efecto (p<0.05) del tratamiento, hora e interacción tratamiento x hora (6:00/13:00 h). Se mostró un efecto positivo del sombrío proveniente de árboles en el sistema sobre las variables fisiológicas. Los efectos negativos observados en tratamientos sin sombrío de árboles repercutieron de forma mínima en alteraciones metabólicas, evidenciando respuestas homeostáticas en el animal ante las condiciones ambientales estresantes evaluadas. Universidad de Costa Rica 2015-06-16 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article application/pdf text/html https://revistas.ucr.ac.cr/index.php/agromeso/article/view/19277 10.15517/am.v26i2.19277 Agronomía Mesoamericana; 2015: Agronomía Mesoamericana: Vol. 26, Issue 2 (July-December); 211-223 Agronomía Mesoamericana; 2015: Agronomía Mesoamericana: Vol. 26, Nº 2 (Julio-diciembre); 211-223 Agronomía Mesoamericana; 2015: Agronomía Mesoamericana: Vol. 26, Issue 2 (July-December); 211-223 2215-3608 1021-7444 spa https://revistas.ucr.ac.cr/index.php/agromeso/article/view/19277/19409 https://revistas.ucr.ac.cr/index.php/agromeso/article/view/19277/19410 |
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Berragán-Hernández, Wilson Andrés Mahecha-Ledesma, Liliana Cajas-Jirón, Yasmin Socorro |
| spellingShingle |
Berragán-Hernández, Wilson Andrés Mahecha-Ledesma, Liliana Cajas-Jirón, Yasmin Socorro Physiological-metabolic variables of heat stress in cows grazing in silvopastoral systems and in one treeless prairie. |
| author_facet |
Berragán-Hernández, Wilson Andrés Mahecha-Ledesma, Liliana Cajas-Jirón, Yasmin Socorro |
| author_sort |
Berragán-Hernández, Wilson Andrés |
| title |
Physiological-metabolic variables of heat stress in cows grazing in silvopastoral systems and in one treeless prairie. |
| title_short |
Physiological-metabolic variables of heat stress in cows grazing in silvopastoral systems and in one treeless prairie. |
| title_full |
Physiological-metabolic variables of heat stress in cows grazing in silvopastoral systems and in one treeless prairie. |
| title_fullStr |
Physiological-metabolic variables of heat stress in cows grazing in silvopastoral systems and in one treeless prairie. |
| title_full_unstemmed |
Physiological-metabolic variables of heat stress in cows grazing in silvopastoral systems and in one treeless prairie. |
| title_sort |
physiological-metabolic variables of heat stress in cows grazing in silvopastoral systems and in one treeless prairie. |
| description |
The aim of this work was to analyze changes of physiological and metabolic parameters as indicators of heat stress of cows in pasture systems. The research was carried out from 2011 to 2012 at the Turipaná Agricultural Research Center of Corpoica located in the Caribbean region in Cereté–Colombia. Environmental temperature (T) and relative humidity (H) were determined, as well as and rectal temperature (RT), skin temperature (ST), respiratory frequency (RF) and the acid-basic status of animals. The variables were measured in the morning (6:00 h) and in the afternoon (13:00 h). Significant Statistical differences were observed (p<0.05) in environmental temperature treatments (T) with 7% and 6% less temperature in p-Arbus-Arbor y p-Arbor, respectively, compared with grass treatment. There was a significant hour effect on T and H (p<0.05) and a significant treatment-hour interaction on T (p<0.05). TP and FR showed a significant treatment-hour interaction per hour (6:00/13:00 h). The results show a positive effect of shadow from trees on the physiological variables. The negative effects observed on the physiological variables of unshaded treatments impacted in a minimal way the metabolic variables suggesting homeostatic responses in the animals under the evaluated stressful environmental conditions. |
| publisher |
Universidad de Costa Rica |
| publishDate |
2015 |
| url |
https://revistas.ucr.ac.cr/index.php/agromeso/article/view/19277 |
| work_keys_str_mv |
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