Evaporative heat loss from group-housed growing pigs at high ambient temperatures

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Abstract

The effects of relative humidity and ambient temperature on evaporative heat loss were studied in 12 trials each with a group of 10 gilts with an initial BW of 61.7 kg (58.0¿65.5 kg). The ambient temperature inside a respiration chamber was increased by 2 °C d¿1 starting at 16 °C and ending at 32 °C. Relative humidity was set at 50%, 65% or 80% and remained constant within each trial. The animals had free access to feed and water. Skin temperature (SkinT), total heat production (HP), evaporative heat loss (EvapH), respiration rate (RR), and wallowing of the animals were recorded. SkinT was lowest at 80% relative humidity (P
Original languageEnglish
Pages (from-to)293-299
JournalJournal of Thermal Biology
Volume32
Issue number5
DOIs
Publication statusPublished - 2007

Keywords

  • environmental temperature
  • ammonia emission
  • slatted floor
  • behavior

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