Abstract
Research was conducted in the fields of animal production / College of Agriculture and Forestry / University of Mosul form 3/4/2019 to 28/6/2019 for 87 days to find out the effect of treatment of hatching eggs with vitamin C by immersion (Im) and spraying (SP) in the thickness ,weight of the shell, hatch, performance, carcass and some blood parameters, environmental temperature 37± 2 ̊. The study include :first: the initial egg weights and on days (5, 10, 15) the thickness and weight of the shell before and after incubation, were treated :- First: control, second: the (Im) of eggs with distilled water, third: (Sp) with water, fourth: (Im)by 5g\L, Fifth (Im) with 10g/L, Sixth: (Sp)with 5g /L and Seventh: (Sp) with 10g /L, Duration of (Im) and (Sp) 2 Min., second stage: from of 1- 49 days. The results :increase at in the loss% of egg weight , hatching% and in the weight of hatching chicks and a decrease in the the egg weight% of the initial weight, and increase in embryonic mortality% for (Im) by 10. Decrease in body weight and feed consumption in Vit.C treatments with improvement in feed conversion and production index for (Im) (5, 10) g/ L and high mortality% at (Im) 10g /L. Significant superiority in the dressing in 10 g/L and the chest% for Vit.C treatments ,significant decrease in abdominal fat in (Im)at a 10 g /L at 49 and 56 days. A decrease in serum glucose, globin and triglycerides to spray 5g /L
