<p>A comparative account of haemato-biochemical profiles of an indigenus (IND) and five chicken breeds: viz. Cobb 500 (COB), cockerel (COC), Fayoumi (FAY), Rhode Island Red (RIR), and Sonali (SON, derived from RIR cock × FAY hen), has been presented. The haematological profile included total counts (TC) of RBC, WBC, platelets, haemoglobin (Hb%) and ESR and differential counts (DC) of WBC included neutrophils, eosinophils, lymphocytes, monocytes and basophils. All the haematological parameters

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... ogical parameters except WBC, ESR and basophils showed significant difference among the breeds (P &lt; 0.01). Vital biochemical parameters from blood sera such as calcium, cholesterol, creatinine, glucose and urea also showed significant difference among the chicken breeds (P &lt; 0.05). The haematobiochemical parameters, however, were not significantly correlated (P &gt; 0.05) with each other among the chicken breeds. Except for cholesterol vs. urea in IND, none of the correlations tested for haemato-biochemical profiles of the experimental chickens was found significant. Relevance of this study in relation to health, clinico-pathology and improved breeding strategies of the poultry species in the country has been discussed.</p><p>Bangladesh J. Zool. <strong>41</strong>(2): 135-144, 2013</p>