Measurements of thermal microenvironment in a swine transport trailer

A. C. Lenkaitis, X. Wang, T. L. Funk, M. Ellis, C. M. Murphy

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Transportation has been recognized as an important aspect that affects meat quality and profit in pork production. The objective of this study was to measure the microenvironment surrounding the animals in the transport trailer through seasonal testing. Fourteen tests were performed over three seasons (hot, mild and cold) to determine seasonal trends in the microenvironment of the animals during transport, with exposure to temperature extremes. A total of 156 market-weight pigs were loaded onto a straight, dual-deck semi-trailer for each trip. Results showed that the average compartment temperatures were often higher than external temperature before traveling, but generally cooled down to be consistent with external temperature during transport, because of relative air velocity. A verage compartment air velocity was highly correlated to truck travel speed. Skin surface temperatures of pigs were highest while waiting at the farm after loading and decreased during transport. Carbon dioxide levels were higher in compartments towards the front of the trailer, indicating that ventilating air entered the rear of the trailer and exited out the front. The data collected in this study is important to evaluate the animal microenvironment during transport. These data can also be used to help develop a simulation model to improve trailer designs, reduce animal stress level and reduce economic loss from transport losses and optimize the practice of animal loading and transporting.

Original languageEnglish (US)
Title of host publicationLivestock Environment VIII - Proceedings of the 8th International Symposium
Number of pages11
StatePublished - 2008
Event8th International Livestock Environment Symposium, ILES VIII - Iguassu Falls, Brazil
Duration: Aug 31 2008Sep 4 2008

Publication series

NameLivestock Environment VIII - Proceedings of the 8th International Symposium


Other8th International Livestock Environment Symposium, ILES VIII
CityIguassu Falls


  • Environment, Transportation, Swine. Measurement

ASJC Scopus subject areas

  • Agricultural and Biological Sciences (miscellaneous)
  • Animal Science and Zoology


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