Effect of Human Factor on Fear and Stress Reactions and Some Performance Parameters in Broiler Chickens
DOI:
https://doi.org/10.3923/ijps.2010.59.62Keywords:
Broiler chicken, fear, heterophil to lymphocyte ratio (HLR), performance, stressAbstract
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.
References
Benoff, F.H. and P.B. Siegel, 1976. Genetic analysis of tonic immobility in young Japanese quail (Coturnix coturnix Japonica). Anim. Learn. Behav., 4: 160-162.
Bizeray, D., C. Leterrier, P. Constantin, G. Le Pape and J.M. Faure, 2002. Typology of activity bouts and effect of fearfulness on behaviour in meat-type chickens. Behav. Processes, 58: 45-55.
Gross, W.B. and H.S. Siegel, 1983. Evaluation of the heterophil/lymphocyte ratio as a measure of stress in chickens. Avian Dis., 27: 972-979.
Heiblum, R., O. Aizenstein, G. Gvaryahu, H. Voet, B. Robinzon and N. Snapir, 1998. Tonic immobility and open field responses in domestic fowl chicks during the first week of life. Applied Anim. Behav. Sci., 60: 347-357.
Hemsworth, P.H., G.J. Coleman, J.L. Barnett and R.B. Jones, 1994. Behavioural responses to humans and the productivity of commercial broiler chickens. Applied Anim. Behav. Sci., 41: 101-114.
Jones, B.R. and M.J. Faure, 1981. The effects of regular handling on fear responses in the domestic chick. Behav. Processes, 6: 135-143.
Jones, B.R., 1992. The nature of handling immediately prior to test affects tonic immobility fear reactions in laying hens and broilers. Applied Anim. Behav. Sci., 34: 247-254.
Kannan, G. and J.A. Mench, 1997. Prior handling does not significantly reduce the stres response to pre-slaughter handling in broiler chickens. Applied Anim. Behav. Sci., 51: 87-99.
Keer, K.S., B.O. Hughes, P.M. Hocking and R.B. Jones, 1996. Behavioural comparison of layer and broiler fowl: Measuring fear responses. Applied Anim. Behav. Sci., 49: 321-333.
Lin, H., S.J. Sui, H.C. Jiao, J. Buyse and E. Decuypere, 2006. Impaired development of broiler chickens by stress mimicked by corticosterone exposure. Comp. Biochem. Physiol. A Mol. Integr. Physiol., 143: 400-405.
Marin, R.H., P. Freytes, D. Guzman and B.R. Jones, 2001. Effects of an acute stressor on fear and on the social reinstatement responses of domestic chicks to cage mates and strangers. Applied Anim. Behav. Sci., 71: 57-66.
Nicol, C.J. and G.B. Scott, 1990. Pre-slaughter handling and transport of broiler chickens. Applied Anim. Behav. Sci., 28: 57-73.
Nicol, J.C., 1992. Effect of environmental enrichment and gentle handling on behaviour and fear responses of transported broilers. Applied Anim. Behav. Sci., 33: 367-380.
Rushen, J., A.A. Taylor and A.M. Passille, 1999. Domestic animal`s fear of humans and its effect on their welfare. Applied Anim. Behav. Sci., 65: 285-303.
Sumbuloglu, K. and V. Sumbuloglu, 1993. Biyoistatistik. Ozdemir Yayincilik, Ankara.
Thompson, R.K.R. and M. Liebreich, 1987. Adult chicken alarm calls enhance tonic immobility in chicks. Behav. Processes, 14: 49-61.
Zulkifli, I., J. Gilbert, P.K. Liew and J. Ginsos, 2002. The effects of regular visual contact with human beings on fear, stress, antibody and growth responses in broiler chickens. Applied Anim. Behav. Sci., 79: 103-112.
Zulkifli, I., P.K. Liew, D.A. Israf, A.R. Omar and M. Hair-Bejo, 2003. Effects of early age feed restriction and heat conditioning on heterophil/lymphocyte ratios, heat shock protein 70 expression and body temperature of heat-stressed broiler chickens. J. Ther. Biol., 28: 217-222.
Zulkifli, I. and A.S.N. Azah, 2004. Fear and stress reactions and the performance of commercial broiler chickens subjected to regular pleasant and unpleasant contacts with human being. Applied Anim. Behav. Sci., 88: 77-87.
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