A behavior and physiology-based decision support tool to predict thermal comfort and stress in non-pregnant, mid-gestation, and late-gestation sows

Although thermal indices have been proposed for swine, none to our knowledge differentiate by reproductive stage or predict thermal comfort using behavioral and physiological data. The study objective was to develop a behavior and physiology-based decision support tool to predict thermal comfort and...

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Bibliographic Details
Published in:Journal of animal science and biotechnology 2022-12, Vol.13 (1), p.135-13, Article 135
Main Authors: McConn, Betty R, Schinckel, Allan P, Robbins, Lindsey, Gaskill, Brianna N, Green-Miller, Angela R, Lay, Jr, Donald C, Johnson, Jay S
Format: Article
Language:English
Subjects:
Accuracy
Agriculture
Body temperature
Breastfeeding & lactation
Climate change
Data collection
Decision support
Decision support systems
Dependent variables
Dew point
Environmental indicators
Experiments
Gestation
Heat
Heat stress
Heat tolerance
Hogs
Humidity
Inflection points
Intensive farming
Laboratory animals
Management
Metabolism
Physiology
Pregnancy
Productivity
Regression analysis
Skin
Skin temperature
Sows
Swine
Temperature
Temperature effects
Thermal comfort
Thermal index
Thermal stress
Thresholds
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Summary:Although thermal indices have been proposed for swine, none to our knowledge differentiate by reproductive stage or predict thermal comfort using behavioral and physiological data. The study objective was to develop a behavior and physiology-based decision support tool to predict thermal comfort and stress in multiparous (3.28 ± 0.81) non-pregnant (n = 11), mid-gestation (n = 13), and late-gestation (n = 12) sows. Regression analyses were performed using PROC MIXED in SAS 9.4 to determine the optimal environmental indicator [dry bulb temperature (T ) and dew point] of heat stress (HS) in non-pregnant, mid-gestation, and late-gestation sows with respiration rate (RR) and body temperature (T ) successively used as the dependent variable in a cubic function. A linear relationship was observed for skin temperature (T ) indicating that T rather than the sow HS response impacted T and so T was excluded from further analyses. Reproductive stage was significant for all analyses (P 
ISSN:1674-9782
2049-1891
2049-1891
DOI:10.1186/s40104-022-00789-x