A comparison of thermoregulatory capacity in three lines of female broiler breeders

Nicholas A Gonet*, DA Sandercock, MA Mitchell

*Corresponding author for this work

Research output: Contribution to journalArticle


Artificial genetic selection of poultry for economically important production traits has been extremely successful. However, it has become apparent that selection for improved growth rate and food conversion efficiency may be associated with a number of undesirable consequences. Thus, it is acknowledged that present day broiler chickens are particularly susceptible to the effects of elevated thermal loads in terms of productivity and mortality. In addition, broilers may be exposed to routine acute thermal challenges during
procedures such as transportation when any increase in susceptibility to heat stress associated with genetic selection for performance may prove detrimental. The present study, therefore, has examined the thermoregulatory responses in females of three differentially selected grandparent broiler lines in order to
compare their relative degrees of thermotolerance.
Original languageEnglish
Pages (from-to)700-701
Number of pages2
JournalBritish Poultry Science
Issue number5
Publication statusPrint publication - 2000
Externally publishedYes
EventSpring Meeting of the World's Poultry Science Association (WPSA) 2000 - Scarborough, United Kingdom
Duration: 20 Mar 200022 Mar 2000


  • Broiler breeder strains
  • Acute heat stress
  • Hyperthermia
  • Thermal polypnea
  • Hypocapnia
  • Respiratory alkalosis
  • Blood pH
  • Thermoregulatory capacity
  • Thermotolerance


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