Abstract
Background: The study of hormone and blood parameters in male Pati duck was carried out to investigate the changes that occur in these parameters during the post-natal development as better understanding of physiology is necessary for improving the productivity. Methods: The blood and serum sample were collected from Pati duck at 1 month, 6-8 weeks, 20 weeks, 30 weeks and 40 weeks age groups. For each age group 6 representative samples were collected from the jugular vein. Hormones (testosterone, cortisol, triiodothyronine and thyroxine) were estimated using Radioimmunoassay (RIA) and haematological parameters were studied using digital analyser. Result: Age related change observed with Testosterone hormone with maximum level observed in 40 weeks age group. T3 and T4 hormone were higher in younger age; T3 was highest in 20 weeks while T4 was highest in 1 month age group. Cortisol was higher in older groups and maximum level observed in 40 weeks age group. Among the haematological parameters significant changes was observed in packed cell volume (PCV), white blood cells (WBC), monocyte and neutrophils.
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