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The effect of thermal manipulations during the development of the thyroid and adrenal axes on in-hatch and post-hatch thermoregulation
Year:
2008
Source of publication :
Journal of Thermal Biology
Authors :
Ruzal, Mark
;
.
Shinder, Dmitry A.
;
.
Yahav, Shlomo
;
.
Volume :
33
Co-Authors:
Piestun, Y., Institute of Animal Science, the Volcani Center, Bet Dagan, 50250, Israel
Shinder, D., Institute of Animal Science, the Volcani Center, Bet Dagan, 50250, Israel
Ruzal, M., Institute of Animal Science, the Volcani Center, Bet Dagan, 50250, Israel
Halevy, O., Department of Animal Sciences, Faculty of Agriculture, the Hebrew University of Jerusalem, Rehovot, 76100, Israel
Yahav, S., Institute of Animal Science, the Volcani Center, Bet Dagan, 50250, Israel
Facilitators :
From page:
413
To page:
418
(
Total pages:
6
)
Abstract:
This study aimed to elucidate the effects of thermal manipulation (TM) during the development and maturation of the thyroid and adrenal axis on broiler chicks hatchability and thermoregulation during hatch, and to evaluate the improvement of thermotolerance acquisition of TM chicks by thermally challenging them post-hatch. Fertile Cobb eggs were divided into three treatments: control, 12 and 24 H. The control eggs were incubated under standard conditions, whereas the 12 and 24 H eggs were incubated from 7 d of incubation (E7) until E16 (inclusive) at 39.5 °C and 65% RH for 12 h/d (12 H) or continuously (24 H). Hatchability, BW and quality of the hatched 24 H chicks were negatively affected, but exhibited significantly improved thermotolerance on heat stress at 3 and 10 d of age for males and females, respectively. It can be concluded that continuous TM during embryogenesis impaired broiler chick performance, but improved their ability to thermoregulate in response to thermal challenge mainly by reducing heat production. © 2008 Elsevier Ltd. All rights reserved.
Note:
Related Files :
adrenal gland
broilers
chick
Female
heat stress
heat tolerance
Male
organogenesis
thermoregulation
thyroid hormone
Show More
Related Content
More details
DOI :
10.1016/j.jtherbio.2008.06.007
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
28497
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:39
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Scientific Publication
The effect of thermal manipulations during the development of the thyroid and adrenal axes on in-hatch and post-hatch thermoregulation
33
Piestun, Y., Institute of Animal Science, the Volcani Center, Bet Dagan, 50250, Israel
Shinder, D., Institute of Animal Science, the Volcani Center, Bet Dagan, 50250, Israel
Ruzal, M., Institute of Animal Science, the Volcani Center, Bet Dagan, 50250, Israel
Halevy, O., Department of Animal Sciences, Faculty of Agriculture, the Hebrew University of Jerusalem, Rehovot, 76100, Israel
Yahav, S., Institute of Animal Science, the Volcani Center, Bet Dagan, 50250, Israel
The effect of thermal manipulations during the development of the thyroid and adrenal axes on in-hatch and post-hatch thermoregulation
This study aimed to elucidate the effects of thermal manipulation (TM) during the development and maturation of the thyroid and adrenal axis on broiler chicks hatchability and thermoregulation during hatch, and to evaluate the improvement of thermotolerance acquisition of TM chicks by thermally challenging them post-hatch. Fertile Cobb eggs were divided into three treatments: control, 12 and 24 H. The control eggs were incubated under standard conditions, whereas the 12 and 24 H eggs were incubated from 7 d of incubation (E7) until E16 (inclusive) at 39.5 °C and 65% RH for 12 h/d (12 H) or continuously (24 H). Hatchability, BW and quality of the hatched 24 H chicks were negatively affected, but exhibited significantly improved thermotolerance on heat stress at 3 and 10 d of age for males and females, respectively. It can be concluded that continuous TM during embryogenesis impaired broiler chick performance, but improved their ability to thermoregulate in response to thermal challenge mainly by reducing heat production. © 2008 Elsevier Ltd. All rights reserved.
Scientific Publication
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