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Daylength effects on stress and fear responses in broiler chickens


Citation

Idrus, Zulkifli and Abdullah, Rasedee and O., Nor Syaadah and Mat Taib, Che Norma (1998) Daylength effects on stress and fear responses in broiler chickens. Asian-Australasian Journal of Animal Sciences, 11 (6). pp. 751-754. ISSN 1011-2367; ESSN: 1976-5517

Abstract

Heterophil (H) to lymphocyte (L) ratios and durations of tonic immobility (TI) were measured to assess stress and fear responses, respectively, in broiler chickens provided either 12 h of natural lighting (12L) or 12 h natural lighting and 12 h of supplementary lighting (24L). Birds illuminated 24L had greater H/L ratios and TI durations than their 12L counterparts. Neither age, sex nor cage level had significant effect on TI reactions.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Veterinary Medicine
DOI Number: https://doi.org/10.5713/ajas.1998.751
Publisher: Asian-Australasian Association of Animal Production Societies
Keywords: Broilers; Daylength; Fear; Stress
Depositing User: Nabilah Mustapa
Date Deposited: 30 Dec 2016 06:04
Last Modified: 30 Dec 2016 06:04
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.5713/ajas.1998.751
URI: http://psasir.upm.edu.my/id/eprint/50052
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