נגישות
menu      
חיפוש מתקדם
תחביר
חפש...
הספר "אוצר וולקני"
אודות
תנאי שימוש
ניהול
קהילה:
אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Thermotolerance acquisition in broiler chickens by temperature conditioning early in life - The effect of timing and ambient temperature
Year:
2001
Source of publication :
Poultry Science
Authors :
יהב, שלמה
;
.
Volume :
80
Co-Authors:
Yahav, S., Institute of Animal Science, ARO the Volcani Center, P.O. Box 6, Bet Dagan, 50250, Israel
McMurtry, J.P., USDA, ARS, Growth Biology Laboratory, BARC-East, Beltsville, MD 20705, United States
Facilitators :
From page:
1662
To page:
1666
(
Total pages:
5
)
Abstract:
Thermal conditioning of chicks results in improvements in performance and thermotolerance at marketing age. Conditioning has been found to be a sensitive process, dependent on age and the temperature used. The objective of this study was to assess the optimal timing and temperature for the conditioning processes. Six separate trials were conducted on male broiler chickens: the first two aimed to find the optimal age for thermal conditioning (1 to 5 d of age); the other four evaluated the optimal thermal conditioning temperature between 36 and 40.5 C. At 42 d of age chickens were thermally challenged to evaluate their ability to cope with acute heat stress. The highest body weight was achieved when thermal conditioning had been applied at the age of 3 d, and it coincided with low feed intake and higher to significantly higher feed efficiency. These treated chickens showed relatively lower mortality rate under thermal challenge and lower to significantly lower Triiodothyronine (T3) concentration in Trial 2. Chicks that had been thermally conditioned at ambient temperatures (Ta) of 36 and 37.5 C at the age of 3 d demonstrated the best performance characteristics and the ability to reduce T3 concentration to the lowest levels during thermal challenge. It can be suggested, therefore, that a Ta between 36.0 and 37.5 C, applied at 3 d of age is optimum for thermal conditioning of broiler chickens.
Note:
Related Files :
Animal
animal disease
Blood
body temperature
Chickens
heat stress
Male
Poultry Diseases
Thermal challenge
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
24836
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:10
Scientific Publication
Thermotolerance acquisition in broiler chickens by temperature conditioning early in life - The effect of timing and ambient temperature
80
Yahav, S., Institute of Animal Science, ARO the Volcani Center, P.O. Box 6, Bet Dagan, 50250, Israel
McMurtry, J.P., USDA, ARS, Growth Biology Laboratory, BARC-East, Beltsville, MD 20705, United States
Thermotolerance acquisition in broiler chickens by temperature conditioning early in life - The effect of timing and ambient temperature
Thermal conditioning of chicks results in improvements in performance and thermotolerance at marketing age. Conditioning has been found to be a sensitive process, dependent on age and the temperature used. The objective of this study was to assess the optimal timing and temperature for the conditioning processes. Six separate trials were conducted on male broiler chickens: the first two aimed to find the optimal age for thermal conditioning (1 to 5 d of age); the other four evaluated the optimal thermal conditioning temperature between 36 and 40.5 C. At 42 d of age chickens were thermally challenged to evaluate their ability to cope with acute heat stress. The highest body weight was achieved when thermal conditioning had been applied at the age of 3 d, and it coincided with low feed intake and higher to significantly higher feed efficiency. These treated chickens showed relatively lower mortality rate under thermal challenge and lower to significantly lower Triiodothyronine (T3) concentration in Trial 2. Chicks that had been thermally conditioned at ambient temperatures (Ta) of 36 and 37.5 C at the age of 3 d demonstrated the best performance characteristics and the ability to reduce T3 concentration to the lowest levels during thermal challenge. It can be suggested, therefore, that a Ta between 36.0 and 37.5 C, applied at 3 d of age is optimum for thermal conditioning of broiler chickens.
Scientific Publication
You may also be interested in