Effect of coating zeolite with nanosilver on performance and efficiency of energy and protein efficiency in broiler chickens

This experiment was carried out to study the effect of coating zeolite with nanosilver on performance, energy and protein efficiency and the weight of liver, spleen and burs of fabricius in broilers, using 375 Cobb strain chicks in a completely randomized design with five treatments, five repetitions and 15 chicks in each replicate. Treatments were included basal diet and basal diet supplemented with one percent zeolite coated with different levels of nanosilver (zero, 0.25, 0.50 and 0.75 ppm). Broilers performance investigated weekly. Energy and protein efficiency were calculated in each period of production. On days of 21 and 42 two birds from each experimental unit were slaughtered to measure the weight of internal organs. The results didn’t show any significant different in weight gain and feed intake between exmerimental diets. The efficiency of energy and protein increased significantly on grower period and total period of production (p