Effect of Early Feeding (in Ovo) With Nano-Selenium and Vitamin E on Body Weight and Glycogen Level in Broiler Chickens Exposed to Fasting Condition

Abstract

Abstract This study aimed to reduce the severity of stress on incubating chicks as a result of long staying in hatcheries and exposure to food fasting as well as evaluate its subsequent growth performance. In present study, 750 fertilized eggs were used with divided into 5 treatments, each treatment contains 150 eggs, the first treatment (T1) is a negative control treatment without injection and the second treatment (T2) is a positive control treatment injected with distilled water. The treatments (T3, T4, and T5) were injected with a solution containing vitamin E, nano-selenium at concentrations of (15, 30, 45 mg/ml), respectively. The hatching chicks were divided from the injected egg treatments, where each treatment was divided into 3 replicates and the chicks were starved for 48 hours without providing them feed and they provided with water only. According to results, a significant increase occurred for the treatments (T3, T4, and T5) in weight at hatching and weight at age of 48 hours compared to positive and negative control treatments (T1 and T2). Significant increase occurred for the T5 treatment in the glycogen content of liver with a significant level and for the age at the hatching of (12, 24, 48 hr of bird age), respectively. Significant increase occurred for the treatments (T3 and T5) in the concentration of cardiac glycogen at hatching and at the age of (12 hr). The significant of the T5 treatment continued at the age of (24 and 48 hr) compared to the rest of the treatments. Significant increase occurred for the treatments (T3, T4 and T5) in the concentration of muscle glycogen compared to the treatments (T1 and T2). The results showed that nano-selenium and vitamin E improved the performance of embryonic growth and increased the weight of hatching chicks as well as increasing the level of glycogen in the liver, muscles and heart muscles.