Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

The upper critical ambient temperature in neonatal chicks.

W van der Hel1, M W Verstegen, A M Henken

  • 1Department of Animal Husbandry, Agricultural University, Wageningen, The Netherlands.

Poultry Science
|September 1, 1991
PubMed
Summary

Neonatal broiler chicks experience increased body weight loss and water loss as ambient temperatures rise. Their upper critical temperature, beyond which heat loss becomes challenging, is between 36 and 37 degrees Celsius.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Description of a dynamic in vitro model of the dog gastrointestinal tract and an evaluation of various transit times for protein and calcium.

Alternatives to laboratory animals : ATLA·2014
Same author

Effect of recombinant porcine somatotropin on body composition and meat quality in growing pigs; Interactions with genotype, sex and slaughter weight.

Meat science·2011
Same author

Biology of zinc and biological value of dietary organic zinc complexes and chelates.

Nutrition research reviews·2008
Same author

Fermentation in the large intestine of single-stomached animals and its relationship to animal health.

Nutrition research reviews·2008
Same author

Risk factors for the presence of Campylobacter spp. in Dutch broiler flocks.

Preventive veterinary medicine·2004
Same author

Differences between reference laboratories of the European community in their ability to detect Salmonella species.

European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology·2002

Area of Science:

  • Animal Physiology
  • Poultry Science
  • Environmental Biology

Background:

  • Neonatal broiler chicks have limited thermoregulatory capacity.
  • Environmental temperature significantly impacts chick metabolism and survival.
  • Understanding thermal stress is crucial for optimizing broiler production.

Purpose of the Study:

  • To quantify heat production, dry matter, and water loss in broiler chicks.
  • To determine the effects of constant ambient temperatures (30.8–38.8°C) on chick physiology.
  • To identify the upper critical temperature for neonatal broiler chicks.

Main Methods:

  • Measurement of heat production, dry matter, and water loss over 24 hours.
  • Exposure of neonatal broiler chicks to controlled constant environmental temperatures.

Related Experiment Videos

  • Analysis of body weight, yolk sac weight, and water loss from the body and yolk sac.

    • Main Results:

    • Increased ambient temperature led to greater total body weight loss.
    • Yolk sac weight loss occurred, comprising equal parts dry matter and water.
    • Water loss from the chick's body increased significantly above 35°C, and heat production rose with temperature.

    Conclusions:

    • The upper critical temperature for neonatal broiler chicks is estimated to be between 36°C and 37°C.
    • Elevated temperatures induce significant physiological stress, evidenced by increased water loss and weight reduction.
    • Heat production decreases with prolonged exposure duration, indicating physiological adaptation or exhaustion.