Influence of Water Temperature and Heat Stress on Drinking Water Intake in Dairy Cows

Grazing animals are exposed to heat stress and there should be conditions to facilitate water intake. Three experiments were carried out to determine the relationship between water intake, water temperature, and heat stress for Holstein pastured dairy cows. Experiment 1: Drinking behavior of 13 cows...

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Autores principales:	González Pereyra,Ana Valeria, Maldonado May,Verónica, Catracchia,Carlos Guillermo, Herrero,María Alejandra, Flores,Myriam Celina, Mazzini,Mariana
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2010
Materias:	drinking behavior summer time THI grazing dairy farms
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000200017
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spelling	oai:scielo:S0718-583920100002000172018-10-01Influence of Water Temperature and Heat Stress on Drinking Water Intake in Dairy CowsGonzález Pereyra,Ana ValeriaMaldonado May,VerónicaCatracchia,Carlos GuillermoHerrero,María AlejandraFlores,Myriam CelinaMazzini,Mariana drinking behavior summer time THI grazing dairy farms Grazing animals are exposed to heat stress and there should be conditions to facilitate water intake. Three experiments were carried out to determine the relationship between water intake, water temperature, and heat stress for Holstein pastured dairy cows. Experiment 1: Drinking behavior of 13 cows was evaluated (for 3 consecutive days) and four time periods were established according to the temperature humidity index (THI): (H1:05:00 to 10:59 h, H2:11:00 to 16:59 h, H3:17:00 to 22:59 h, and H4:23:00 to 04:59 h). The highest mean percentage of drinking bouts (53.2%) was registered in H2 (THI: 74.91 to 83.95). Drinking bout means among time periods were different (p < 0.05), thus showing that heat stress conditions influence drinking behavior. Experiment 2: Three water troughs were placed in the sun (S) and three under a 2.2 m high structure covered with shade cloth (MS). Water temperature was registered at 10:00, 13:30, and 17:00 h, twice a week for 6 weeks. Mean water temperatures at 17:00 h were 33.2 ± 1.6 °C (S) and 25.3 ±.9 °C (MS) and showed significant differences (p < 0.05), thus supporting the shade cloth effect. Experiment 3: Five cows were offered water simultaneously at 18 and 31 °C (T1 and T2), for 10 min, twice a day for 5 d. There were no significant differences among treatments (p > 0.05). Recorded water intake in T1 (18 L ) was lower than in T2 (35.9 L ), although body heat dissipation was higher (T1 = 672.64 kJ d-1, T2 = 620.76 kJ d-1).info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.70 n.2 20102010-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000200017en10.4067/S0718-58392010000200017
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	drinking behavior summer time THI grazing dairy farms
spellingShingle	drinking behavior summer time THI grazing dairy farms González Pereyra,Ana Valeria Maldonado May,Verónica Catracchia,Carlos Guillermo Herrero,María Alejandra Flores,Myriam Celina Mazzini,Mariana Influence of Water Temperature and Heat Stress on Drinking Water Intake in Dairy Cows
description	Grazing animals are exposed to heat stress and there should be conditions to facilitate water intake. Three experiments were carried out to determine the relationship between water intake, water temperature, and heat stress for Holstein pastured dairy cows. Experiment 1: Drinking behavior of 13 cows was evaluated (for 3 consecutive days) and four time periods were established according to the temperature humidity index (THI): (H1:05:00 to 10:59 h, H2:11:00 to 16:59 h, H3:17:00 to 22:59 h, and H4:23:00 to 04:59 h). The highest mean percentage of drinking bouts (53.2%) was registered in H2 (THI: 74.91 to 83.95). Drinking bout means among time periods were different (p < 0.05), thus showing that heat stress conditions influence drinking behavior. Experiment 2: Three water troughs were placed in the sun (S) and three under a 2.2 m high structure covered with shade cloth (MS). Water temperature was registered at 10:00, 13:30, and 17:00 h, twice a week for 6 weeks. Mean water temperatures at 17:00 h were 33.2 ± 1.6 °C (S) and 25.3 ±.9 °C (MS) and showed significant differences (p < 0.05), thus supporting the shade cloth effect. Experiment 3: Five cows were offered water simultaneously at 18 and 31 °C (T1 and T2), for 10 min, twice a day for 5 d. There were no significant differences among treatments (p > 0.05). Recorded water intake in T1 (18 L ) was lower than in T2 (35.9 L ), although body heat dissipation was higher (T1 = 672.64 kJ d-1, T2 = 620.76 kJ d-1).
author	González Pereyra,Ana Valeria Maldonado May,Verónica Catracchia,Carlos Guillermo Herrero,María Alejandra Flores,Myriam Celina Mazzini,Mariana
author_facet	González Pereyra,Ana Valeria Maldonado May,Verónica Catracchia,Carlos Guillermo Herrero,María Alejandra Flores,Myriam Celina Mazzini,Mariana
author_sort	González Pereyra,Ana Valeria
title	Influence of Water Temperature and Heat Stress on Drinking Water Intake in Dairy Cows
title_short	Influence of Water Temperature and Heat Stress on Drinking Water Intake in Dairy Cows
title_full	Influence of Water Temperature and Heat Stress on Drinking Water Intake in Dairy Cows
title_fullStr	Influence of Water Temperature and Heat Stress on Drinking Water Intake in Dairy Cows
title_full_unstemmed	Influence of Water Temperature and Heat Stress on Drinking Water Intake in Dairy Cows
title_sort	influence of water temperature and heat stress on drinking water intake in dairy cows
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2010
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000200017
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Influence of Water Temperature and Heat Stress on Drinking Water Intake in Dairy Cows

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