Impact of nano-Selenium on biochemical, antioxidant, immunological and histological parameters of broiler chickens during rainy season

Poultry sector supports economies of many nations, especially evolving ones, and provides a consistent and inexpensive protein. Nano-selenium is utilized to increase mineral availability, which aid in broiler growth and maintain their health. The current research was conducted to evaluate the impact of dietary nano-selenium supplement on immunological, haematological, biochemical and histological parameters on Vencobb broiler chicks during rainy season. Two hundred seventy numbers of one-day-old broiler chicks were split in nine groups at random, individually encompassing of three replicates with ten chicks. The control group (T1) was provided a basal diet, T2 received 0.3 mg/kg of inorganic selenium, T3, T4, T5, T6, T7, T8 and T9 received 0.0187, 0.0375, 0.075, 0.15, 0.30, 0.60 and 1.20 mg/kg of nano-selenium, respectively. The results revealed that nano-selenium had no significant (p>0.05) influence on haematological parameters except MCV (%) at third week and MCV (femtolitre) as well as MCHC (%) at the fifth week (p0.05) were observed among the treatment groups in any of the measured biochemical markers. The glutathione and superoxide dismutase enzyme actions were significantly (p