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The study was conducted in one of the research farms in the Department of Animal Production / College of Agriculture at Tikrit University for the period from 17 /10/ 2020 to 11/1/2021 in order to determine the appropriate diets from energy and protein and impact on the production performance of the egg producing brown Japanese quail 35 days' age. the birds were categorized and divided into six treatments, each treatment contains three duplicates and each repeater contains 8 birds (6 females 2 males) raised for 12 weeks three durations for four weeks. The Experiment treatments were fed on the following diets: treatments resulting from the first treatment 2800 kcal/kg energy feed and 20% crude protein. (first treatment use (2800 kcal/kg and CP18 protein ratio), second use (2900 kcal/kg and CP20 protein ratio), third use (2700 kcal/kg and protein ratio) CP17) and treatments resulting from the second treatment 2900 kcal/kg energy feed and 22% crude protein (first use (2800 kcal/kg and CP18 protein ratio), second (2900 kcal/kg and CP20 protein ratio) third use (2700 kcal/kg and CP17 protein ratio). The results of the statistical analysis showed that there were no significant differences between the factors in the percentage of egg production, the weight of eggs, and the feed consumption rate during the total period (6-17 weeks) and significant treatments exceeded the first, third, fourth and sixth treatments compared with the fifth treatment, There was no significant difference between them and the second treatment in the egg mass and the feed conversion factor was improved during the total period of all experiment treatments by compared with fifth treatment.

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This experiment was conducted at the poultry house of the Department of Animal Production - College of Agriculture - Tikrit University for the period between 13/2/2021 and 8/5/2021 and aimed to use different levels of crude protein and add some amino acids to the diet of laying hens of Lohmann Brown breed The experiment included 240 chickens at the age of (34) weeks and continued for three production periods, each 28 days long. The treatments were fed as follows: T1: the base diet without any addition (control treatment according to the breeding guide). the other five treatments T2, T3, T4, T5 and T6, the base diet reduced the level of crude protein by 0.5, 1, 1.5, 2, and 2.5, respectively, and supported it with amino acids (lysine, methionine, threonine) to be equal to what it is in the control diet. The results were a significant superiority of the control treatment compared to all treatments of the experiment except for the sixth treatment in total protein in the blood serum, as well as the control treatment was significantly superior to all other treatments of the experiment in the concentration of uric acid in the blood serum. The other experiment treatments, and there was no significant difference between the treatments in the depth of the crypts. As for the ratio between the depth of the crypts and the height of the villus, the fourth and fifth treatments increased significantly compared to the control treatment, and there was no significant difference between them and the rest of the experiment treatments, as well as a significant increase in nitrogen proposed for the sixth treatment. Compared with other experimental parameters.

This experiments is conducted to investigate the effect of using various levels of  Dried Distillers Corn  Grains and supplemented with the Iraqi probiotic with fermentation treatment on the physiological performance of  laying hens .Atotal of   600 laying hens ( ISA Brown ) at the age of  22 weeks are used . Hens are assigned randomly on 12 treatment groups with  two replicates for each treatment , 25 hens for each replicate .The treatment  groups are as follows : T1 : The control treatment , no supplementation ( the negative control ) T2 : The control treatment with  Iraqi  probiotic ( the first  positive control ) . T3 : The control treatment with Iraqi probiotic + Fermentation ( the second  positive control ) . T4 : Dried Distillers Corn Grains"DDG 10 % . T5 : DDG 10 % + Iraqi Probiotic . T6 : DDG 10 % + Iraqi Probiotic + Fermentation . T7 : DDG 20 % . T8 : DDG 20 % + Iraqi Probiotic .  T9 : DDG 20 % + Iraqi probiotic + Fermentation . T10 : DDG 30 % . T11 : DDG 30 % + Iraqi probiotic . T12 : DDG 30 % +  Iraqi probiotic + Fermentation . The diets are given in a ground form . The lighting program and the water supplementing regime are performed according to ( guides for laying hen - ISA-Brown ) from the age of 22 weeks till the age of 37 weeks . The results obtained could be summarized as follows : Diet supplementation with Iraqi probiotic significantly ( p < 0.05) increases the  total bacteria count  and lactic acid bacteria  and decrease the count of E. coliin the jujinum  of treated birds  as compared with control – Treatments significantly  increase the villi high  and  crypts depth in favor of the treatments which contained DDG The serum cholesterol in treatments  which fed on diets supplemented with DDG exception the control which fed10% DDG fermented  with probiotic . DDG Treatments significantly( p < 0.05) decrease triglyceride compared with the T12 (30% DDG andfermentation with  probiotic ) in addition to high significant  in total protein and globuin experience for all treatments as compared with T11 (30% and probiotic ).