title: Effect of supplementing organic selenium on performance, carcass traits, oxidative parameters and immune responses in commercial broiler chickens.
abstract: An experiment was conducted to determine the effect of supplementing various concentrations (0, 100, 200, 300, or 400 μg/kg diet) of organic Se on growth performance, carcass traits, oxidative stress, and immune responses in commercial broiler chickens reared in open-sided poultry house under tropical climatic conditions. Each diet was fed ad libitum to eight replicates consisting of six birds in each pen from 1 to 42 d of age. Body weight gain and feed efficiency, and relative weight of liver, abdominal fat and ready to cook yields were not affected (p>0.05) by organic Se supplementation to broiler diets. Lipid peroxidation in plasma decreased, while activities of glutathione peroxidase and glutathione reductase in plasma increased (p<0.01) linearly with Se concentration in diet. The ratios between heterophyls and lymphocytes and relative weight of lymphoid organs (bursa, spleen, and thymus), and antibody production to Newcastle disease vaccination were not affected (p>0.05) by Se supplementation to broiler diets. However, the cell-mediated immunity (lymphocyte proliferation ratio) increased (p<0.01) linearly with dietary Se concentration. The results of the present study indicate that the supplementation of Se did not influence body weight and feed efficiency. However, supplementation of Se increased antioxidant status and lymphocyte proliferation in broiler chickens.
authors: Project Directorate on Poultry, Rajendranagar, Hyderabad 500 030, India.
authors: Savaram Venkata Rama
authors: SV
authors: Rao
authors: Project Directorate on Poultry, Rajendranagar, Hyderabad 500 030, India.
authors: Bhukya
authors: B
authors: Prakash
authors: Project Directorate on Poultry, Rajendranagar, Hyderabad 500 030, India.
authors: Mantena Venkata Laxmi Narasimha
authors: MV
authors: Raju
authors: Project Directorate on Poultry, Rajendranagar, Hyderabad 500 030, India.
authors: Arun Kumar
authors: AK
authors: Panda
authors: Project Directorate on Poultry, Rajendranagar, Hyderabad 500 030, India.
authors: Saharia
authors: S
authors: Poonam
authors: Project Directorate on Poultry, Rajendranagar, Hyderabad 500 030, India.
authors: Orugonda Krishna
authors: OK
authors: Murthy
keywords: Broiler Chicken; Immunity; Organic Selenium; Oxidative Stress; Performance