APPLICATION OF NANO-SELENIUM IN LAYER DIETS TO IMPROVE THE PRODUCTIVE PERFORMANCE, EGG QUALITY AND IMMUNOLOGICAL TRAITS IN CHICKENS

Document Type : Original Article

Authors

1 Dept. of Poultry and Fish Production, Faculty of Agric., Menoufia Univ., Egypt.

2 Animal Research Institute, Agric. Research Center, Ministry of Agriculture

Abstract

The experiment was designed to study the effect of dietary Nano-selenium on productive performance, egg quality and immunological traits in 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 treatment diets with 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 showed that application of nano-selenium in layer diets was effective in increasing egg number and egg mass. Also, nano-selenium improved some immunological traits, feed conversion and some egg quality traits. The optimum level of nano-selenium was 200 mg/ ton diet, which recorded 5.40 g feed/ g egg mass compared to 9.24 g feed/ g egg mass in control treatment (200 mg/ ton diet). Applications of 200 mg/ ton diets nano-selenium were significantly decreased, heterophils (H%) and H/ A ratio. Where, Lymphocyte was significantly (p ≤ 0.01) increased. Also, there were positive relationship between shell thickness, shell weight (%) and white blood cells counts with increasing the levels of Nano-selenium in layer diets from 40 to 200 mg/ ton as compared to control.

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