Effect of Dietary Nano-Selenium on Productive, Immunological Performance, Oxidation Resistance and Selenium Deposition in Tissue for Laying Hens

Abstract

The experiment was designed to study the effect of dietary Nanoselenium on productive, immunological performance, oxidation resistance and selenium deposition in tissue of laying hens-A total number of 180 laying hens of Silver Montazah strain were used. Layers were divided randomly into six treatments. Five Nano-selenium diet concentrations (200, 160, 120, 80 and 40 mg/ton for treatments (T2, T3, T4, T5 and T6), respectively. The treatment (T1) was used as control with 200 mg/ton diet sodium selenite.The results were discussed and summarized as follows: 1. Application of Nano-selenium in layer diets was effective in increasing egg number, egg mass, total serum protein, and albumin. 2. Also, Nano-selenium improved some immunological traits, feed conversion, some egg quality traits and some antioxidant enzymes traits. 3. The optimum level of Nano-selenium was 200 mg/ton diet, which recorded 5.409 feed/g egg mass compared to 9.249 feed / g egg mass in control treatment (200 mg/ton diet) 4. Application of 200 mg/ton diets Nano-selenium were significantly decreased total cholesterol, high density Lipoprotein, triglycerides, heterophils (H%) and H/L ratio. Where, Lymphocyte was significantly (p≤ 0.01) increased. 5. The concentration of selenium in liver, breast meat and whole egg were 30.9%, 40.5% and 102.3% higher in layers fed 200 mg/ton diet Nano-selenium compared to layers fed 200mg/ton sodium selenite. 6. layers fed 200mg/ton diet Nano-selenium had 5.6 % and 5.4 % higher in dressing and edible meat, respectively.