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Interaction between thermoregulation and osmoregulation in domestic animals R. Bras. Zootec.
McKinley,Michael; Trevaks,David; Weissenborn,Frank; McAllen,Robin.
ABSTRACT The ability to maintain core temperature as well as volume and composition of body fluids within narrow ranges is a major characteristic of mammals. Yet, the ability to maintain a stable core temperature often relies on physiological responses that perturb the stability of body fluids. A common thermoregulatory mechanism that affects body fluid homeostasis is evaporative cooling, by sweating and/or panting, to dissipate heat from the body when core temperature is elevated. However, these responses result in a reduction of total body water, thereby reducing blood volume and increasing the osmotic pressure of body fluids. While both panting and sweating are highly effective means of preventing core body temperature from increasing, unless the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brain cooling; Hypertonicity; Osmoreceptors; Panting; Sweating.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000900783
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The impact of evaporative cooling on the thermoregulation and sensible heat loss of sows during farrowing REA
Justino,Eliene; Nääs,Irenilza de A.; Carvalho,Thayla M. R.; Neves,Diego P.; Salgado,Douglas D'Alessandro.
Pigs are more sensitive to high environmental temperatures explained by the inability of sweating and panting properly when compared to other species of farmed livestock. The evaporative cooling system might favor the thermal comfort of animals during exposure to extreme environmental heat and reduce the harmful effects of heat stress. The purpose of this study was to assess the sensible heat loss and thermoregulation parameters from lactating sows during summer submitted to two different acclimatization systems: natural and evaporative cooling. The experiment was carried out in a commercial farm with 72 lactating sows. The ambient variables (temperature, relative humidity and air velocity) and sows physiological parameters (rectal temperature, surface...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Ventilation; Thermal stress; Panting; Surface temperature; Swine; Lactation.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000600003
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