scholarly journals Suitability of Different Thermometers for Measuring Body Core and Skin Temperatures in Suckling Piglets

Animals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 1004
Author(s):  
Simone M. Schmid ◽  
Wolfgang Büscher ◽  
Julia Steinhoff-Wagner
Keyword(s):  
Core Temperature ◽  
Infrared Camera ◽  
Well Being ◽  
Field Trials ◽  
Infrared Thermometry ◽  
Different Temperatures ◽  
Suckling Piglets ◽  
Body Core ◽  
Laser Devices ◽  
Skin Temperatures

Monitoring the temperature of piglets after birth is critical to ensure their well-being. Rectal temperature measurement is time-consuming, requires fixation of the animal and is stressful for piglets. This study aims to evaluate the effectiveness of infrared thermometry and thermography as compared to rectal temperatures. We investigated digital thermometers for rectal measurements, infrared ear thermometers, infrared forehead thermometers, infrared laser thermometers and an infrared camera during field trials with piglets aged 1–13 days. Temperatures differed between the left and right ear and ear base (p < 0.01), but not between temples. Three forehead and laser devices yielded different temperatures (p < 0.01). Temperatures assessed with a laser thermometer decreased with distance from the target (p < 0.01). The highest correlation observed was between the rectal and tympanic temperatures (r = 0.89; p < 0.01). For temperatures assessed with the camera, inner thigh and abdomen correlated most closely to core temperature (0.60 ≤ r ≤ 0.62; p < 0.01). Results indicate that infrared ear thermometry commonly used in humans is also suited for assessing temperature in piglets. The inner thigh and abdomen seem promising locations for estimating core temperature with an infrared camera, but this approach needs to be adapted to reduce time exposure and stress for the piglets to be used under practical conditions.

scholarly journals PSII-9 Body core and skin temperatures in suckling piglets measured by infrared thermography and thermometry methods

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 234-235
Author(s):  
Simone M Schmid ◽  
Wolfgang Büscher ◽  
Julia Steinhoff-Wagner
Keyword(s):  
Infrared Thermography ◽  
Short Distance ◽  
Infrared Camera ◽  
Well Being ◽  
Repeated Measurements ◽  
Lower Abdomen ◽  
Suckling Piglets ◽  
Body Core ◽  
Left And Right ◽  
Skin Temperatures

Abstract Monitoring piglets’ temperatures after birth is crucial to prevent losses caused by hypothermia and ensure well-being. Rectal measuring, which is still considered the ‘gold standard’ for assessing core temperatures, takes time and requires fixation. Aim of this study was to evaluate the effectiveness of infrared thermography and thermometry in comparison to rectal temperatures. In one to seven days old piglets, rectal temperatures were measured with digital thermometers (DT) (Geratherm® GT-195-1) (n = 958), tympanic membrane temperatures with an infrared ear thermometer (IET) (ThermoScan® IRT6520) (n = 424), skin temperatures with infrared laser thermometers (ILT) (Eventek™ ET312) behind the ear (n = 671), an infrared camera (IC) (Optris® PI400) at six body locations (n≥488) or an infrared camera attachment (ICA) (FLIR ONE® for iOS) (n = 60). Devices’ reliability was tested. Correlations and differences (GLM) were estimated with SAS® 9.4. DT devices and repeated measurements showed no differences (n = 77). Repeated IET measurements at left and right ear were not different (n = 57). Temperatures decreased for ILT when measured from 10, 30, 50, and 100cm (P &lt; 0.001; n = 360). Three ILT devices obtained different values (P &lt; 0.001). At 10cm, means were different at left and right side (P &lt; 0.001). For following results, the same device was used for all measurements (10cm, left). Highest correlations were found between DT and IET (r = 0.93; P &lt; 0.001) and ILT (r = 0.81; P &lt; 0.001). All infrared temperatures were lower (P &lt; 0.001) than rectal temperatures (38.8°C), except IET (38.7°C). For IC, temperatures at inner thigh and lower abdomen correlated best with DT (0.59≤r≤0.62; P &lt; 0.001). IET seems suited for assessing temperatures in piglets as it is reliable, with values comparable to DT. For IC, inner thigh and lower abdomen seem promising locations, but fixation is still required for both techniques. ILT is an option for estimating core temperatures at a short distance, but reliability needs to be considered.

The recommended Threshold Limit Values for heat exposure fail to maintain body core temperature within safe limits in older working adults

2017 ◽  
Vol 14 (9) ◽  
pp. 703-711 ◽  
Author(s):  
Dallon T. Lamarche ◽  
Robert D. Meade ◽  
Andrew W. D'Souza ◽  
Andreas D. Flouris ◽  
Stephen G. Hardcastle ◽  
...  
Keyword(s):  
Core Temperature ◽  
Heat Exposure ◽  
Body Core Temperature ◽  
Limit Values ◽  
Threshold Limit Values ◽  
Working Adults ◽  
Threshold Limit ◽  
Body Core ◽  
Safe Limits

Hypothalamic paraventricular nucleus is critical for renal vasoconstriction elicited by elevations in body temperature

2008 ◽  
Vol 294 (2) ◽  
pp. F309-F315 ◽  
Author(s):  
Joo Lee Cham ◽  
Emilio Badoer
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Blood Flow ◽  
Renal Blood Flow ◽  
Core Temperature ◽  
Paraventricular Nucleus ◽  
Hypothalamic Paraventricular Nucleus ◽  
Body Core Temperature ◽  
Control Group ◽  
Body Core

Redistribution of blood from the viscera to the peripheral vasculature is the major cardiovascular response designed to restore thermoregulatory homeostasis after an elevation in body core temperature. In this study, we investigated the role of the hypothalamic paraventricular nucleus (PVN) in the reflex decrease in renal blood flow that is induced by hyperthermia, as this brain region is known to play a key role in renal function and may contribute to the central pathways underlying thermoregulatory responses. In anesthetized rats, blood pressure, heart rate, renal blood flow, and tail skin temperature were recorded in response to elevating body core temperature. In the control group, saline was microinjected bilaterally into the PVN; in the second group, muscimol (1 nmol in 100 nl per side) was microinjected to inhibit neuronal activity in the PVN; and in a third group, muscimol was microinjected outside the PVN. Compared with control, microinjection of muscimol into the PVN did not significantly affect the blood pressure or heart rate responses. However, the normal reflex reduction in renal blood flow observed in response to hyperthermia in the control group (∼70% from a resting level of 11.5 ml/min) was abolished by the microinjection of muscimol into the PVN (maximum reduction of 8% from a resting of 9.1 ml/min). This effect was specific to the PVN since microinjection of muscimol outside the PVN did not prevent the normal renal blood flow response. The data suggest that the PVN plays an essential role in the reflex decrease in renal blood flow elicited by hyperthermia.

MK801 impairs thermoregulation in the heat

2002 ◽  
Vol 80 (3) ◽  
pp. 226-232 ◽  
Author(s):  
Frédéric Canini ◽  
Nadine Simler ◽  
Lionel Bourdon
Keyword(s):  
Locomotor Activity ◽  
Nmda Receptor ◽  
Receptor Antagonist ◽  
Core Temperature ◽  
Exposure Duration ◽  
Heat Exposure ◽  
Nmda Receptor Antagonist ◽  
Dopamine Metabolism ◽  
Body Core Temperature ◽  
Body Core

The effects of MK801 (dizocilpine), a glutamate NMDA receptor antagonist, on thermoregulation in the heat were studied in awake rats exposed to 40°C ambient temperature until their body core temperature reached 43°C. Under these conditions, MK801-treated rats exhibited enhanced locomotor activity and a steady rise in body core temperature, which reduced the heat exposure duration required to reach 43°C. Since MK801-treated rats also showed increased striatal dopaminergic metabolism at thermoneutrality, the role of dopamine in the MK801-induced impairment of thermoregulation in the heat was determined using co-treatment with SCH23390, a dopamine D1 receptor antagonist. SCH23390 normalized the locomotor activity in the heat without any effect on the heat exposure duration. These results suggest that the MK801-induced impairment of thermoregulation in the heat is related to neither a dopamine metabolism alteration nor a locomotor activity enhancement.Key words: heatstroke, NMDA receptor, thermoregulation, dopamine, locomotion.

Body Fatness, Body Core Temperature, and Heat Loss During Moderate-Intensity Exercise

2013 ◽  
Vol 84 (11) ◽  
pp. 1153-1158 ◽  
Author(s):  
Jayme D. Limbaugh ◽  
Gregory S. Wimer ◽  
Lynn H. Long ◽  
William H. Baird
Keyword(s):  
Heat Loss ◽  
Core Temperature ◽  
Body Core Temperature ◽  
Moderate Intensity ◽  
Moderate Intensity Exercise ◽  
Body Fatness ◽  
Body Core

scholarly journals Measuring body core temperature using a novel non-invasive sensor

2015 ◽  
Vol 4 (S1) ◽  
Author(s):  
Yoram Epstein ◽  
Savyon Mazgaoker ◽  
Doron Gruber ◽  
Daniel S Moran ◽  
Ran Yanovich ◽  
...  
Keyword(s):  
Core Temperature ◽  
Body Core Temperature ◽  
Non Invasive ◽  
Body Core

scholarly journals Restoring the Soils of Nauru: Plants as Tools for Ecological Recovery

2021 ◽  
Author(s):  
◽  
Alexander Feary
Keyword(s):  
Biomass Production ◽  
Soil Type ◽  
Biomass Productivity ◽  
Well Being ◽  
Field Trials ◽  
Small Degree ◽  
Tissue Type ◽  
Soil Restoration ◽  
Landscape Degradation ◽  
Germination Success

<p>The restoration of Nauru’s mined areas is fundamental to the future wellbeing of the people and ecosystems of Nauru. Extensive open cast phosphate mining on Nauru over the last 100 years has led to soil losses and landscape degradation to the extent that over 70% of this South-Western Pacific island state is now uninhabitable and almost all productive land has been lost. Significant landscape degradation has occurred and as a consequence the soils that remain are insufficient in volume and quality to achieve the Government’s restoration goals which support the long-term development of Nauru and the well-being of its people. The aim of this research is to evaluate aspects of cover-crop use as a means for soil restoration in Nauru. This research evaluates biomass production, phytoremediation potential, and germination success for a range of species in Nauruan soils. Field trials exploring biomass production and cadmium phytoextraction were performed, as was an experiment assessing the effects of cadmium on germination success. It was found that, in the circumstances assessed, biomass productivity was significantly determined by species, mulch use, soil type, and to a small degree – cadmium. Phytoextraction was significantly determined by tissue type. Germination success was not determined by soil cadmium, but soil type was a significant factor.</p>

Sign in / Sign up

Export Citation Format

Share Document