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

Adaptation of chickens to cool temperature Brooding

G M Renwick, K W Washburn

    Poultry Science
    |July 1, 1982
    PubMed
    Summary

    Brooding chickens at 26.7 C, compared to 32.2 C, increased mortality and feed conversion ratio (FCR) but decreased weight gain. Optimal chick management requires careful consideration of temperature and feed/water placement.

    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

    Genetic variation of physiological response to aflatoxin in Gallus domesticus.

    TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·2013
    Same author

    Genetic variability of resistance to Eimeria acervulina and E. tenella in chickens.

    TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·2013
    Same author

    Genetics of heat tolerance and thyroid function in Athens-Canadian randombred chickens.

    TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·2013
    Same author

    Effect of initial size on subsequent growth and carcass characteristics of divergently selected channel catfish.

    TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·2013
    Same author

    The relationship between parental yolk cholesterol and yolk fat concentration to abdominal fat content and feed conversion ratio of their respective offspring.

    Poultry science·1998
    Same author

    Effects of genetic variation on total plasma protein, body weight gains, and body temperature responses to heat stress.

    Poultry science·1998

    Area of Science:

    • Animal Science
    • Poultry Husbandry
    • Avian Physiology

    Background:

    • Brooding temperature is critical for early chick development and survival.
    • Understanding strain-specific responses to thermal stress is essential for optimizing poultry production.

    Purpose of the Study:

    • To compare the effects of two brooding temperatures (32.2 C vs. 26.7 C) on various performance and physiological parameters in different chicken strains.
    • To investigate how environmental factors, such as airflow and feed/water location, influence chick response to cooler brooding conditions.

    Main Methods:

    • Experimental comparison of chicken strains under controlled brooding temperatures (32.2 C and 26.7 C).
    • Assessment of key performance indicators: mortality, weight gain, feed consumption, and feed conversion ratio (FCR).
    • Physiological measurements included rectal temperature, relative organ weights (yolk sac, liver), packed cell volume (PCV), plasma glucose, and plasma cholesterol.

    Main Results:

    • Brooding at 26.7 C significantly increased mortality, FCR, PCV, and plasma cholesterol.
    • Lower temperatures led to reduced weight gain, smaller relative yolk sac weights, and temporary decreases in rectal temperature.
    • The impact of cooler brooding was exacerbated by high airflow and external feed/water placement, but diminished when feed and water were accessible within the heated area.

    Conclusions:

    • Brooding temperature significantly impacts broiler chicken performance and physiology, with cooler temperatures (26.7 C) generally detrimental.
    • Chicken strain and environmental management (airflow, feed/water accessibility) critically modulate the negative effects of suboptimal brooding temperatures.
    • Strategic placement of feed and water under the heat source can mitigate adverse outcomes associated with cooler brooding environments.

    Related Experiment Videos