Abstract: Abstract This study designed to demonstrate the effect of adding different levels of melatonin in some productive and physiological characteristics of quail birds at the age of 35 days. Melatonin added from 7 days to 21 days age, a total 225 bird aged 7 days divided into three treatments with three replicates. The first treatment represented the control treatment (without addition). The second and third treatments Ration supplemented with melatonin at a concentration of 20 and 30 mg / Kg feed respectively The results showed: Melatonin addition did not have significant effect on the live body weight, body weight gain, feed consumption, and the feed conversion ratio from the age of 7 to 35 days, although there was a significant decrease in the melatonin treatments body weight at 21 Day. In addition, melatonin treatment had no significant effect on the total number of red blood cells, white blood cells, PCV% and hemoglobin concentration. While the third treatment showed a significant decrease in MCV and MCH compared to control treatment. About the antioxidants status, Melatonin (20 mg|\kg) reduce MDA and increase GSH significantly.

Abstract: Current study was conducted on 15 Awassi lambs with an average Weight11.24±0.06kg and with average age (1 month aged) Lambs were randomly divided into three groups,(5lambs/group) 1stgroup: control, 2nd group was injected subcutaneously once every ten days with Iron and vitamin B12 (4.54mg/kg body weight and 4.54μg/kg body weight ) 3rd group lambs wereinjected subcutaneously with Iron and vitamin B12(9.09 mg /kg body weight and 9.09μg/kg body weight ) respectively. Results showed a significant increase(P≤0.05)in final weight, total gain, daily gain, body length, chest girth,fore thickness, lymphocyte % and monocyte% intreated groups with Iron and vitamin B12 compared with control group. Also results shows a significant increase(P≤0.05)for 2nd group lambs compared with control in fore height, rear height and rear thick. While there area significant decreaseIn treated groups in neutrophils % and stress index.In conclusion, iron and vitamin B12 injection to weaning lambs improve body measurements and weight and immunity

Abstract: In the current study, 28 Awassi ewes ( 2 -3 ) years aged were used with their lambs for 12 weeks, to evaluate the effect of ewes body weight BW and Litter size LS on Body weight BW, Body gain BG of lambs, Milk yield MY and milk components of ewes. After lambing, ewes were weighted directly. Ewes divided to 4 groups depending on it's body weight , the groups were: 1st and 2nd groups: ewes with high body weight and single lambing HS, and twin lambing HT respectively, 3rd and 4th groups: ewes with low body weight and single lambing LS, and twin lambing LT respectively. The results showed a significant increase (p≤0.05) in BW and BG in HS lambs groups compared with LT lambs most weeks of study. MY was higher significantly (p≤0.05) in H ewes group that have twin lambs at most weeks of study, milk fat% recorded a significant increase in milk fat% in H ewes group with single lamb.. In conclusion, single lambs born and reared by heavy ewes were became heavier at the end of lactation period( at weaning), also ewes with twin lambs regardless if it was H or L will have more milk yield.

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

Abstract: Haugh unit which introduced by Raymond haugh in 1937 is the most scale used to measure the egg quality by equation ( HU= 100*Log (h+7.57)-(1.7 * W 0.37 ) .The aim of this research is to find the prediction equation of the Haugh unit depending on egg weight and albumen height, where we calculate 1503101 value of Haugh unit using microsoft Excel spreadsheet functions and data of egg weight ranged from 40 to 65 gm by increment (0.01) gm , and albumen height from 4 to 10 mm by increment (0.01)mm . The results indicates that there was a significant positive correlation between haugh unit and albumen height (0.969) and negative correlation between haugh unit and egg weight (-0.215), and the ANOVA table show high significant effect of regression model (P ≤ 0.0001) with coefficient of determination R2 (0.985) which indicate that the prediction equation (HU = 58.235-0.334 W+6.256 A) can predict haugh unit with high accuracy.