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International Journal of Poultry Science

.: Home > International Journal of Poultry Science > 2008 > Volume 7 Number 7 > K. Ghareeb1,2*, W.A. Awad1, S. Nitsch3, S. Abdel-Raheem1 and J. Bِhm1

Effects of Transportation on Stress and Fear Responses of Growing Broilers Supplemented with Prebiotic or Probiotic

K. Ghareeb1,2*, W.A. Awad1, S. Nitsch3, S. Abdel-Raheem1 and J. Bِhm1
1Institute of Nutrition, Department of Veterinary Public Health and Food Science, University of Veterinary Medicine, Veterinنrplatz 1, A-1210 Vienna, Austria 2Department of Animal Behaviour and Management, Faculty of Veterinary Medicine, South Valley University, Qena, Egypt 3BIOMIN GmbH Industriestrasse 21, 3130 Herzogenburg, Austria
Abstract :

Physiological stress response and fear levels were evaluated in broiler chickens fed control diets,
chicory (1 kg/ton) and Lactobacillus sp. (1 x 108 cfu/kg) supplemented diets for 5 wk. At the end of the
experiment, the birds were subjected to 80 km transport journey (90 min approximately). The fear levels of
birds were measured using tonic immobility reaction (TI). The duration of TI and the susceptibility of the birds to the test were measured immediately after the birds had arrived to the laboratory and repeated after one week following their transport. Heterophil (H) counts, Lymphocyte (L) counts and Heterophil to Lymphocyte (H/L) ratios were determined immediately on arrival and at 24 h following birds transport. There was no significant differences were recorded in the fear levels of broilers supplemented with either chicory or Lactobacillus sp. compared with their control counterparts. However, in a comparison with fear levels after one week (without transport), a significant difference was observed (P=0.001) irrespective to dietary supplementation. Handling and transport on this relatively short journey was apparently equally frightening for broilers independent of dietary supplementation. H/L ratios either immediately on arrival or at 24 h following birds transport showed a significant difference between the dietary treatments. Chicory and Lactobacillus sp. supplemented groups decreased H/L ratios compared with control group which is
important in reduction of stress effects on birds. In conclusion, supplementation of broiler diet with either
chicory or Lactobacillus sp. can modulate the physiological stress response of transported birds and
consequently enhance tolerance to stress without change in their behavioural index of fear.

Keywords :
Broiler, transport, tonic immobility, fear, stress, H/L ratio

Date Deposited : 12 Jul 2011 13:17

Last Modified : 12 Jul 2011 13:17

Official URL:

Volume 7, Number 7, - 2008 , ISSN 1682-8356

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