Measuring the emissivity of mammal pelage

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Abstract

Infrared thermography is an increasingly used technology in veterinary science and in mammal physiology. However, its employment as a quantitative method to accurately determine mammal surface temperatures requires knowledge of the emissivity of that individual’s pelage. To-date, few researchers have measured emissivity of their study animal’s pelage, or determined the relationship between fur metrics and emissivity. Instead, studies have relied on historic values generated from a single study on arctic fauna. Therefore, this study aimed to determine pelage emissivity for a range of mammal species and to establish the putative correlation between emissivity and fur metrics. Emissivity was measured at different sites of the body for 22 species. In addition, hair length and hair diameter were measured from hairs collected at the same sites that emissivity was measured. The mean pelage emissivity of sampled specimens was 0.86 ± 0.01, which was lower than the range (0.95–1.00) reported previously. Emissivity was neither related to taxonomy nor to hair metrics but may be related to other factors not measured in this study. Contrary to common practice, a single (0.98) or a narrow range (0.95–1.00) of emissivity values is unlikely to be appropriate for obtaining accurate surface temperature readings in quantitative IRT studies on mammals.
Original languageEnglish
JournalQuantitative InfraRed Thermography Journal
Early online date06 Apr 2018
DOIs
Publication statusEarly online date - 06 Apr 2018

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mammals
Mammals
emissivity
hair
Physiology
Taxonomies
Animals
surface temperature
animals
Temperature
taxonomy
physiology

Cite this

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title = "Measuring the emissivity of mammal pelage",
abstract = "Infrared thermography is an increasingly used technology in veterinary science and in mammal physiology. However, its employment as a quantitative method to accurately determine mammal surface temperatures requires knowledge of the emissivity of that individual’s pelage. To-date, few researchers have measured emissivity of their study animal’s pelage, or determined the relationship between fur metrics and emissivity. Instead, studies have relied on historic values generated from a single study on arctic fauna. Therefore, this study aimed to determine pelage emissivity for a range of mammal species and to establish the putative correlation between emissivity and fur metrics. Emissivity was measured at different sites of the body for 22 species. In addition, hair length and hair diameter were measured from hairs collected at the same sites that emissivity was measured. The mean pelage emissivity of sampled specimens was 0.86 ± 0.01, which was lower than the range (0.95–1.00) reported previously. Emissivity was neither related to taxonomy nor to hair metrics but may be related to other factors not measured in this study. Contrary to common practice, a single (0.98) or a narrow range (0.95–1.00) of emissivity values is unlikely to be appropriate for obtaining accurate surface temperature readings in quantitative IRT studies on mammals.",
author = "McGowan, {Natasha E.} and Scantlebury, {David M.} and Maule, {Aaron G.} and Marks, {Nicola J.}",
year = "2018",
month = "4",
day = "6",
doi = "10.1080/17686733.2018.1437239",
language = "English",
journal = "Quantitative InfraRed Thermography Journal",
issn = "1768-6733",
publisher = "Taylor and Francis Ltd.",

}

TY - JOUR

T1 - Measuring the emissivity of mammal pelage

AU - McGowan, Natasha E.

AU - Scantlebury, David M.

AU - Maule, Aaron G.

AU - Marks, Nicola J.

PY - 2018/4/6

Y1 - 2018/4/6

N2 - Infrared thermography is an increasingly used technology in veterinary science and in mammal physiology. However, its employment as a quantitative method to accurately determine mammal surface temperatures requires knowledge of the emissivity of that individual’s pelage. To-date, few researchers have measured emissivity of their study animal’s pelage, or determined the relationship between fur metrics and emissivity. Instead, studies have relied on historic values generated from a single study on arctic fauna. Therefore, this study aimed to determine pelage emissivity for a range of mammal species and to establish the putative correlation between emissivity and fur metrics. Emissivity was measured at different sites of the body for 22 species. In addition, hair length and hair diameter were measured from hairs collected at the same sites that emissivity was measured. The mean pelage emissivity of sampled specimens was 0.86 ± 0.01, which was lower than the range (0.95–1.00) reported previously. Emissivity was neither related to taxonomy nor to hair metrics but may be related to other factors not measured in this study. Contrary to common practice, a single (0.98) or a narrow range (0.95–1.00) of emissivity values is unlikely to be appropriate for obtaining accurate surface temperature readings in quantitative IRT studies on mammals.

AB - Infrared thermography is an increasingly used technology in veterinary science and in mammal physiology. However, its employment as a quantitative method to accurately determine mammal surface temperatures requires knowledge of the emissivity of that individual’s pelage. To-date, few researchers have measured emissivity of their study animal’s pelage, or determined the relationship between fur metrics and emissivity. Instead, studies have relied on historic values generated from a single study on arctic fauna. Therefore, this study aimed to determine pelage emissivity for a range of mammal species and to establish the putative correlation between emissivity and fur metrics. Emissivity was measured at different sites of the body for 22 species. In addition, hair length and hair diameter were measured from hairs collected at the same sites that emissivity was measured. The mean pelage emissivity of sampled specimens was 0.86 ± 0.01, which was lower than the range (0.95–1.00) reported previously. Emissivity was neither related to taxonomy nor to hair metrics but may be related to other factors not measured in this study. Contrary to common practice, a single (0.98) or a narrow range (0.95–1.00) of emissivity values is unlikely to be appropriate for obtaining accurate surface temperature readings in quantitative IRT studies on mammals.

U2 - 10.1080/17686733.2018.1437239

DO - 10.1080/17686733.2018.1437239

M3 - Article

JO - Quantitative InfraRed Thermography Journal

JF - Quantitative InfraRed Thermography Journal

SN - 1768-6733

ER -