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International Journal of Poultry Science

.: Home > International Journal of Poultry Science > 2009 > Volume 8 Number 10 > W. Aengwanich1, M. Suttajit2 and N.-A. Narkkong3

Effects of Polyphenols Extracted from Tamarind (Tamarindus indica L.) Seed Coat on Differential White Blood Cell Count in Broilers (Gallus domesticus) Exposed to High Environmental Temperature

W. Aengwanich1, M. Suttajit2 and N.-A. Narkkong3
1Stress and Oxidative Stress Research in Animal Unit, Faculty of Veterinary Medicine and Animal Science, Mahasarakham University, Maha Sarakham, 44000, Thailand 2School of Science and Technology, Naresuan University Prayao, Muang Districy, Phayao 56000, Thailand 3Central Instrumentation Unit, Faculty of Science, Mahasarakham University, Maha Sarakham, 44150, Thailand
Abstract :

Tamarind (Tamarindus indica L.) is a plant that belongs to the Leguminosae family and grows naturally in tropical and subtropical regions. Tamarind seed coat is composed of polyphenols especially procyanidin oligomers. The objective of this experiment was to determine the effect of polyphenols  extracted from tamarind seed coat on differential white blood cell counts of broilers maintained at high environmental temperature. Broilers were divided into 2 groups. In group 1, broilers were maintained in environmental temperature at 26±2oC throughout experimental period, and in group 2, broilers were maintained in environmental temperature at 38±2oC and received polyphenols i.e. 0, 100, 200, 300, 400 and 500 mg/kg
in diets. Differential white blood cell counts were investigated on days 1, 7, 14 and 21 of experimental period. The results revealed the following information: Lymphocyte and basophil levels of broilers maintained in the environmental temperature at 38±2oC and received polyphenols at 400 mg/kg in diet were increased (p<0.05). On the other hand, the heterophil and monocyte levels of broilers maintained in the environmental temperature at 38±2oC and received polyphenols at 400 mg/kg in diet were decreased (p<0.05). This occurrence indicated that polyphenols extracted from tamarind seed coat could reduce heat stress in broilers.

Keywords :
Lymphocyte, heterophil, monocyte, basophil, eosinophil, heat stress

Date Deposited : 06 Jul 2011 12:48

Last Modified : 06 Jul 2011 12:48

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

Volume 8, Number 10, - 2009 , ISSN 1682-8356

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