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Behaviour, temperature and terrain slope impact estimates of energy expenditure using oxygen and dynamic body acceleration
Animal Biotelemetry, Volume: 9, Issue: 1, Start page: 47
Swansea University Author:
Rory Wilson
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DOI (Published version): 10.1186/s40317-021-00269-5
Abstract
The energy used by animals is influenced by intrinsic (e.g. physiological) and extrinsic (e.g. environmental) factors. Accelerometers within biologging devices have proven useful for assessing energy expenditures and their behavioural context in free-ranging animals. However, certain assumptions are...
Published in: | Animal Biotelemetry |
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ISSN: | 2050-3385 |
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Springer Science and Business Media LLC
2021
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URI: | https://cronfa.swan.ac.uk/Record/cronfa58857 |
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2021-12-31T14:36:04.3003610 v2 58857 2021-11-30 Behaviour, temperature and terrain slope impact estimates of energy expenditure using oxygen and dynamic body acceleration 017bc6dd155098860945dc6249c4e9bc 0000-0003-3177-0177 Rory Wilson Rory Wilson true false 2021-11-30 SBI The energy used by animals is influenced by intrinsic (e.g. physiological) and extrinsic (e.g. environmental) factors. Accelerometers within biologging devices have proven useful for assessing energy expenditures and their behavioural context in free-ranging animals. However, certain assumptions are frequently made when acceleration is used as a proxy for energy expenditure, with factors, such as environmental variation (e.g. ambient temperature or slope of terrain), seldom accounted for. To determine the possible interactions between behaviour, energy expenditure and the environment (ambient temperature and terrain slope), the rate of oxygen consumption (V˙O2) was measured in pygmy goats (Capra hircus aegarus) using open-flow indirect calorimetry. The effect of temperature (9.7–31.5 °C) on resting energy expenditure was measured. The relationship between V˙O2 and dynamic body acceleration (DBA) was measured at different walking speeds (0.8–3.0 km h−1) and on different inclines (0, + 15°, − 15°). The daily behaviour of individuals was measured in two enclosures: enclosure A (level terrain during summer) and enclosure B (sloped terrain during winter) and per diem energy expenditures of behaviours estimated using behaviour, DBA, temperature, terrain slope and V˙O2. During rest, energy expenditure increased below 22 °C and above 30.5 °C. V˙O2 (ml min−1) increased with DBA when walking on the level. Walking uphill (+ 15°) increased energetic costs three-fold, whereas walking downhill (− 15°) increased energetic costs by one third. Based on these results, although activity levels were higher in animals in enclosure A during summer, energy expenditure was found to be significantly higher in the sloped enclosure B in winter (means of enclosures A and B: 485.3 ± 103.6 kJ day−1 and 744.5 ± 132.4 kJ day−1). We show that it is essential to account for extrinsic factors when calculating animal energy budgets. Our estimates of the impacts of extrinsic factors should be applicable to other free ranging ungulates. Journal Article Animal Biotelemetry 9 1 47 Springer Science and Business Media LLC 2050-3385 Rate of oxygen consumption, Pygmy goat, Tri-axial accelerometry, Indirect calorimetry, Locomotion, Resting energy expenditure, Thermoneutral zone 26 11 2021 2021-11-26 10.1186/s40317-021-00269-5 COLLEGE NANME Biosciences COLLEGE CODE SBI Swansea University 2021-12-31T14:36:04.3003610 2021-11-30T17:06:05.9912393 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Eleanor R. Dickinson 1 Philip A. Stephens 2 Nikki J. Marks 3 Rory Wilson 0000-0003-3177-0177 4 David M. Scantlebury 5 58857__21762__520c72b533cc47ac977736a3ddb8e7a3.pdf 58857.pdf 2021-12-01T15:42:47.7660843 Output 1695438 application/pdf Version of Record true © The Author(s) 2021. This article is licensed under a Creative Commons Attribution 4.0 International License true eng http://creativecommons.org/licenses/by/4.0/ |
title |
Behaviour, temperature and terrain slope impact estimates of energy expenditure using oxygen and dynamic body acceleration |
spellingShingle |
Behaviour, temperature and terrain slope impact estimates of energy expenditure using oxygen and dynamic body acceleration Rory Wilson |
title_short |
Behaviour, temperature and terrain slope impact estimates of energy expenditure using oxygen and dynamic body acceleration |
title_full |
Behaviour, temperature and terrain slope impact estimates of energy expenditure using oxygen and dynamic body acceleration |
title_fullStr |
Behaviour, temperature and terrain slope impact estimates of energy expenditure using oxygen and dynamic body acceleration |
title_full_unstemmed |
Behaviour, temperature and terrain slope impact estimates of energy expenditure using oxygen and dynamic body acceleration |
title_sort |
Behaviour, temperature and terrain slope impact estimates of energy expenditure using oxygen and dynamic body acceleration |
author_id_str_mv |
017bc6dd155098860945dc6249c4e9bc |
author_id_fullname_str_mv |
017bc6dd155098860945dc6249c4e9bc_***_Rory Wilson |
author |
Rory Wilson |
author2 |
Eleanor R. Dickinson Philip A. Stephens Nikki J. Marks Rory Wilson David M. Scantlebury |
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Animal Biotelemetry |
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9 |
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47 |
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2021 |
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Swansea University |
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2050-3385 |
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10.1186/s40317-021-00269-5 |
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Springer Science and Business Media LLC |
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Faculty of Science and Engineering |
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description |
The energy used by animals is influenced by intrinsic (e.g. physiological) and extrinsic (e.g. environmental) factors. Accelerometers within biologging devices have proven useful for assessing energy expenditures and their behavioural context in free-ranging animals. However, certain assumptions are frequently made when acceleration is used as a proxy for energy expenditure, with factors, such as environmental variation (e.g. ambient temperature or slope of terrain), seldom accounted for. To determine the possible interactions between behaviour, energy expenditure and the environment (ambient temperature and terrain slope), the rate of oxygen consumption (V˙O2) was measured in pygmy goats (Capra hircus aegarus) using open-flow indirect calorimetry. The effect of temperature (9.7–31.5 °C) on resting energy expenditure was measured. The relationship between V˙O2 and dynamic body acceleration (DBA) was measured at different walking speeds (0.8–3.0 km h−1) and on different inclines (0, + 15°, − 15°). The daily behaviour of individuals was measured in two enclosures: enclosure A (level terrain during summer) and enclosure B (sloped terrain during winter) and per diem energy expenditures of behaviours estimated using behaviour, DBA, temperature, terrain slope and V˙O2. During rest, energy expenditure increased below 22 °C and above 30.5 °C. V˙O2 (ml min−1) increased with DBA when walking on the level. Walking uphill (+ 15°) increased energetic costs three-fold, whereas walking downhill (− 15°) increased energetic costs by one third. Based on these results, although activity levels were higher in animals in enclosure A during summer, energy expenditure was found to be significantly higher in the sloped enclosure B in winter (means of enclosures A and B: 485.3 ± 103.6 kJ day−1 and 744.5 ± 132.4 kJ day−1). We show that it is essential to account for extrinsic factors when calculating animal energy budgets. Our estimates of the impacts of extrinsic factors should be applicable to other free ranging ungulates. |
published_date |
2021-11-26T04:15:43Z |
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1763754055489814528 |
score |
11.021648 |