Modeling the Physiological Growth of Swine Part III: Heat Production and Interaction With Environment
Abstract
Part 3 of this series presents the development and validation of the relationships used in the NCPIG computer model to simulate heat production and interaction with the thermal environment of growing swine. The model was developed to simulate transient, diurnal energy flows for growing pigs considering metabolic heat production, sensible and radiant heat gains and losses, latent heat losses and heat storage within the animal body. The relationships used in the model are described and the results of comparisons between predicted heat production and observed data for individually housed pigs are presented. The predicted and observed data were for crossbred gilts ranging in weight from 30-100 kg and for three levels of environmental temperature: lower critical temperature (LCT), LCT+58 C, and LCT-58 C. The simulated heat production values for the LCT experiment were within the observed mean minus one standard deviation while those for the LCT+5 and LCT-5 treatments were approximately one standard deviation above and below their respective means.
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According to Usry et al. (1992), rv is proportional to Ab.
“According to Usry et al. (1992), r v is proportional to Ab .”
From Theoretical model of heat balance in pigs (2004) · cites this paper as Usry et al., 1992
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Theoretical model of heat balance in pigs
Fialho, F. B., Bucklin, R. A., Zazueta, F. S., & Myer, R. O. (2004) · Animal Science · doi:10.1017/s135772980005459x · Cited by 25 · see citing works
- Authors
- Usry, J. L., Turner, L. W., Bridges, T. C., & Nienaber, J. A.
- Venue
- Transactions of the ASAE
- Published
- 1992
- Volume
- 35
- Issue
- 3
- Pages
- 1035-1042
- ISSN
- 0001-2351 (ISSN-L)
- 2151-0059
- OpenAlex
- W1996655511
- Cited by
- 18
- References
- 0
- Citations by year
- 2026: 1 · 2022: 1 · 2021: 2 · 2019: 1 · 2018: 1 · 2017: 1
- FWCI
- 0.67
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Transactions of the ASAE (publishedVersion)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Effects of Environmental Stressors on Livestock
- Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Animal Nutrition and Physiology
- Physical Sciences › Environmental Science › Ecology › Physiological and biochemical adaptations
- Keywords
- growing pigs, thermal environment, lower critical temperature, latent heat loss, thermal energy storage, crossbred gilts, model validation
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