ISSN : 1225-2964(Print)
ISSN : 2287-3317(Online)
ISSN : 2287-3317(Online)
Annals of Animal Resource Sciences Vol.26 No.1 pp.48-55
DOI : https://doi.org/10.12718/AARS.2015.26.1.48
DOI : https://doi.org/10.12718/AARS.2015.26.1.48
Analysis on Laying Hens’ Performance under High Ambient Temperature
13 February 2015
17 June 2015
18 June 2015
Abstract
There is no doubt that global warming and climate change affect animal production and sustainability of
livestock systems. High ambient temperature and humidity have detrimental effects on the performance of
laying hens. The aim of this study was to evaluate the influence of cyclic temperatures on the performance
and egg quality of laying hens during the summer in Korea. A total of 1028 Hy-Line Brown layers were
reared in the open floor house and exposed to a 24 hr linear temperature cycle ranging from 21.7 to 33.0℃.
Feed intake significantly decreased and cracked eggs increased under high ambient temperature or high THI(Temperature Humidity Index). Egg production was decreased gradually from 21 to 29℃ or from 21 to 26
THI. On the other hens, it was increased above 30℃ or 27 THI rather than decreased. High ambient
temperature has no important impact on dirty eggs and mortality in this study. We believe that present data
contribute to predict the effect of thermal conditions on the performance of laying hens by using ambient
temperature or THI.
livestock systems. High ambient temperature and humidity have detrimental effects on the performance of
laying hens. The aim of this study was to evaluate the influence of cyclic temperatures on the performance
and egg quality of laying hens during the summer in Korea. A total of 1028 Hy-Line Brown layers were
reared in the open floor house and exposed to a 24 hr linear temperature cycle ranging from 21.7 to 33.0℃.
Feed intake significantly decreased and cracked eggs increased under high ambient temperature or high THI(Temperature Humidity Index). Egg production was decreased gradually from 21 to 29℃ or from 21 to 26
THI. On the other hens, it was increased above 30℃ or 27 THI rather than decreased. High ambient
temperature has no important impact on dirty eggs and mortality in this study. We believe that present data
contribute to predict the effect of thermal conditions on the performance of laying hens by using ambient
temperature or THI.