Sarood Samal Shawkat(1) Salwan Mahmood Abdulateef(2) Mohammed Ala Al-Bayar(2) and Zhina Abbas Mohammed(1)

(1). Animal Science department, College of Engineering Agriculture Sciences, University of Sulaimani, Iraq.

(2). Department of Animal Production, College of Agricultural, University of Anbar, Iraq

(Corresponding author: Sarood Shawkat . E-Mail: sarood.shawkat@univsul.edu.iq).

Abstract

This study carried at the Department of Animal Science, College of Agricultural Engineering Sciences, University Sulaimani / Kurdistan Region Iraq, from 20/9/2019 to 20/11/2019. Aimed to study the effect of different feed withdrawal periods on broiler blood and immune system function. In this study, 280 of fourteen days old “Ross 308” broilers used. Chickens randomly allocated to 4 treatments, 5 replicates for each, 14 chicks per replicate. Chickens fed a balanced diet containing all nutrients as Ross 308 broiler feeding guide. Feed was withdrawn at different times, T1= Control group (adlibitum feed), T2= Remove food for 6 hours, T3= Remove for 9 hours and T4= Remove food for 12 hours. In 42-day-old bursa of Fabricius, Pancreases, Spleen percentage weights measured. HB, PCV %, RBC, WBC, Heterophil %, Eosinophil %, Basophil %, Lymphocytes, Monocytes and (H/L Ratio) also measured in this study. Results show a significant decreasing (p ≥0.05) in females RBC for T2 and T3 compared with a control group, a significant increase (p ≥0.05) in heterophil percentage (%) for T3 male group compared with control group (T1).

Keywords: broiler chicken, blood measurements, feed restrictio

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