... flow-through respirometry and of body composition using quantitative magnetic resonance of live birds. At the end of the acclimation period, we measured thermal conductance of the combined feathers and skins. Cold-acclimated birds had a higher summit metabolic rate, reflecting a greater capacity...

... hyemalis ) to chronic cold acclimations of varying duration and subsequently quantified their metabolic rates, thermal conductance and ability to maintain normothermia. Cold-acclimated birds adjusted traits related to both heat generation (increased summit metabolic rate) and heat conservation (decreased...

...-lactation milk energy output (MEO peak , kJ day −1 ) was calculated as the difference between MEI peak and ADMR peak (for a full description of the method, see Król and Speakman, 2003b ; Speakman and Król, 2005b ). To confirm the effect of fur removal on thermal conductance, we measured resting...

... and 9.3 g lower than those at 21°C, respectively. Lactating gerbils had higher thermal conductance of the fur and lower UCP-1 levels in brown adipose tissue than non-reproductive gerbils, independent of ambient temperature, suggesting that they were attempting to avoid heat stress. Thermal conductance...

... for Swiss mice are inconsistent with this hypothesis. To examine the role of limits to heat dissipation on SusEI, the body temperature, thermal conductance and lactation performance were measured in dorsally shaved Swiss mice. Shaving reduces external insulation and the heat dissipation limitation...

... 1758), is known to enter into torpor exclusively in the winter. To test for seasonal differences in the metabolic and thermoregulatory responses to hypoxia (9.9 kPa), flow-through respirometry was used to compare oxygen consumption, minimum thermal conductance and T b under fixed ambient temperature( T...

... these changes in blubber morphology and composition influence its thermal properties. Thermal conductivity (W m –1 deg. –1 , where deg. is °C) and thermal insulation(m 2 deg. W –1 ) of dolphin blubber were measured in individuals across an ontogenetic series (fetus through adult, N =36),pregnant females ( N =4...

... comparable with those of terrestrial mammalian young of similar body size. Thermal conductance was independent of air temperature, but increased with water temperature. In-water thermal conductance of pre-molt pups was approximately twice that of post-molt pups. In-water pre-molt pups matched the energy...

..., the increase in T b during thoracic cooling was greater than that recorded during cervical cooling. This indicates that cooling of the two different parts of the spinal cord also had different effects on the thermoregulatory effector mechanisms that influence thermal conductance. The study seems to provide...