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International Journal of Poultry Science

.: Home > International Journal of Poultry Science > 2010 > Volume 9 Number 1 > Mehmet Kenan Türkyilmaz2, Ahmet Nazligül2, Muharrem Balkaya3 and Evrim Fidan Dereli2

Effect of Human Factor on Fear and Stress Reactions and Some Performance Parameters in Broiler Chickens1

Mehmet Kenan Türkyilmaz2, Ahmet Nazligül2, Muharrem Balkaya3 and Evrim Fidan Dereli2
2Department of Animal Science, 3Department of Physiology, Faculty of Veterinary Medicine, Adnan Menderes University, Aydin, Turkey
Abstract :

The aim of the study was to investigate the effects of visual human contacts on fear and stress
reactions and some performance parameters in broiler chickens. A total of 180 (Ross-308), day-old
commercial broiler chicks allocated into 3 groups each containing 60 chicks. Birds in Group-I and Group-II
were exposed to regular visual contact for 5 min for two and three times a day while control counterparts had
no visual contact during the study (1-37 days). Tonic Immobility (TI) duration and Heterophil to Lymphocyte
Ratio (HLR) parameters were used to determine the level of fear and stress, respectively. The Newcastle
disease antibody titres were analysed by using a commercial ELISA kit. The results revealed that visual
human contact has no significant effect on tonic immobility duration and the number of induction in broiler
chickens. This study also showed that visual human contact has no effect on parameters such as body
weight, feed intake, feed conversion ratio, mortality and immunisation in broilers.

Keywords :
Broiler chicken, fear, stress, performance, heterophil to lymphocyte ratio (HLR

Date Deposited : 25 Jun 2011 10:09

Last Modified : 25 Jun 2011 10:09

Official URL: http://www.pjbs.org/ijps/ijps.htm

Volume 9, Number 1, - 2010 , ISSN 1682-8356

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