Thermoregulatory profile of a newer genetic line of pigs

T. M. Brown-Brandl, R. A. Eigenberg, J. A. Nienaber, S. D. Kachman

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

Researchers and producers alike have noted the increased susceptibility to heat stress exhibited by the newer genetic lines of pigs. A study was conducted to gather baseline information on the effects of acute heat stress on total heat production (THP), respiratory quotient (RQ), respiration rate (RR), and rectal temperature (Trectal) and to investigate the dynamic interaction of these parameters in growing-finishing barrows. Sixteen moderate-lean growth barrows were randomly assigned to a set of treatments as dictated by a repeated 4×4 Latin square crossover design. Pigs were moved from an individual pen to an indirect calorimeter where one of four environmental treatments (18, 24, 28, 32°C) were applied for 20 h. During the treatment exposure RR, THP, RQ and Trectal were measured. For the 2-week period between treatments, pigs were housed at thermoneutral (22°C). THP was found to be 17-20% higher than the published standards but comparable with other contemporary studies. Respiration rate was found to be a leading indicator of stress.

Original languageEnglish (US)
Pages (from-to)253-260
Number of pages8
JournalLivestock Production Science
Volume71
Issue number2-3
DOIs
StatePublished - Jan 1 2001

Fingerprint

genetic lines
Thermogenesis
Respiratory Rate
heat production
respiratory rate
respiratory quotient
Swine
barrows
swine
heat stress
Hot Temperature
calorimeters
Cross-Over Studies
finishing
researchers
Research Personnel
Temperature
Growth
temperature

Keywords

  • Calorimetry
  • Pig
  • Respiratory quotient
  • Temperature
  • Thermoregulation

ASJC Scopus subject areas

  • Animal Science and Zoology
  • veterinary(all)

Cite this

Thermoregulatory profile of a newer genetic line of pigs. / Brown-Brandl, T. M.; Eigenberg, R. A.; Nienaber, J. A.; Kachman, S. D.

In: Livestock Production Science, Vol. 71, No. 2-3, 01.01.2001, p. 253-260.

Research output: Contribution to journalArticle

Brown-Brandl, T. M. ; Eigenberg, R. A. ; Nienaber, J. A. ; Kachman, S. D. / Thermoregulatory profile of a newer genetic line of pigs. In: Livestock Production Science. 2001 ; Vol. 71, No. 2-3. pp. 253-260.
@article{6bf1f131da5942ccb3bbff425291e33e,
title = "Thermoregulatory profile of a newer genetic line of pigs",
abstract = "Researchers and producers alike have noted the increased susceptibility to heat stress exhibited by the newer genetic lines of pigs. A study was conducted to gather baseline information on the effects of acute heat stress on total heat production (THP), respiratory quotient (RQ), respiration rate (RR), and rectal temperature (Trectal) and to investigate the dynamic interaction of these parameters in growing-finishing barrows. Sixteen moderate-lean growth barrows were randomly assigned to a set of treatments as dictated by a repeated 4×4 Latin square crossover design. Pigs were moved from an individual pen to an indirect calorimeter where one of four environmental treatments (18, 24, 28, 32°C) were applied for 20 h. During the treatment exposure RR, THP, RQ and Trectal were measured. For the 2-week period between treatments, pigs were housed at thermoneutral (22°C). THP was found to be 17-20{\%} higher than the published standards but comparable with other contemporary studies. Respiration rate was found to be a leading indicator of stress.",
keywords = "Calorimetry, Pig, Respiratory quotient, Temperature, Thermoregulation",
author = "Brown-Brandl, {T. M.} and Eigenberg, {R. A.} and Nienaber, {J. A.} and Kachman, {S. D.}",
year = "2001",
month = "1",
day = "1",
doi = "10.1016/S0301-6226(01)00184-1",
language = "English (US)",
volume = "71",
pages = "253--260",
journal = "Livestock Science",
issn = "1871-1413",
publisher = "Elsevier",
number = "2-3",

}

TY - JOUR

T1 - Thermoregulatory profile of a newer genetic line of pigs

AU - Brown-Brandl, T. M.

AU - Eigenberg, R. A.

AU - Nienaber, J. A.

AU - Kachman, S. D.

PY - 2001/1/1

Y1 - 2001/1/1

N2 - Researchers and producers alike have noted the increased susceptibility to heat stress exhibited by the newer genetic lines of pigs. A study was conducted to gather baseline information on the effects of acute heat stress on total heat production (THP), respiratory quotient (RQ), respiration rate (RR), and rectal temperature (Trectal) and to investigate the dynamic interaction of these parameters in growing-finishing barrows. Sixteen moderate-lean growth barrows were randomly assigned to a set of treatments as dictated by a repeated 4×4 Latin square crossover design. Pigs were moved from an individual pen to an indirect calorimeter where one of four environmental treatments (18, 24, 28, 32°C) were applied for 20 h. During the treatment exposure RR, THP, RQ and Trectal were measured. For the 2-week period between treatments, pigs were housed at thermoneutral (22°C). THP was found to be 17-20% higher than the published standards but comparable with other contemporary studies. Respiration rate was found to be a leading indicator of stress.

AB - Researchers and producers alike have noted the increased susceptibility to heat stress exhibited by the newer genetic lines of pigs. A study was conducted to gather baseline information on the effects of acute heat stress on total heat production (THP), respiratory quotient (RQ), respiration rate (RR), and rectal temperature (Trectal) and to investigate the dynamic interaction of these parameters in growing-finishing barrows. Sixteen moderate-lean growth barrows were randomly assigned to a set of treatments as dictated by a repeated 4×4 Latin square crossover design. Pigs were moved from an individual pen to an indirect calorimeter where one of four environmental treatments (18, 24, 28, 32°C) were applied for 20 h. During the treatment exposure RR, THP, RQ and Trectal were measured. For the 2-week period between treatments, pigs were housed at thermoneutral (22°C). THP was found to be 17-20% higher than the published standards but comparable with other contemporary studies. Respiration rate was found to be a leading indicator of stress.

KW - Calorimetry

KW - Pig

KW - Respiratory quotient

KW - Temperature

KW - Thermoregulation

UR - http://www.scopus.com/inward/record.url?scp=0034786479&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0034786479&partnerID=8YFLogxK

U2 - 10.1016/S0301-6226(01)00184-1

DO - 10.1016/S0301-6226(01)00184-1

M3 - Article

AN - SCOPUS:0034786479

VL - 71

SP - 253

EP - 260

JO - Livestock Science

JF - Livestock Science

SN - 1871-1413

IS - 2-3

ER -