This study was conducted in the field quail of the Agriculture College/University of Basrah for the period from 24/11/2018 to 04/01/2019 to study the effect of adding different levels of dietary Marjoram (Origanumvulgarae) and (Rosmarinus officinalisL) on some productive of Japanese Quail in the study (450) chick. Unsexed one day old chicks were used at an initial weight 8.5 g. The chicks were randomly distributed into Ten treatments each treatment contained 45 chicks with three replicates each one has 15 chicks, the treatments as the following T1,T2,T3,T4,T5,T6,T7,T8,T9,T10 (Control, Adding 5 g powder of marjoram leaves from one day to 21 days, Add 5 g of marjoram powder from the age of 22 to 42 days, Adding 5 g of rosemary leaves powder from 1 day to 21 days, Adding 5 g of rosemary leaves from 22 to 42 days, Adding 2.5 g powdered leaves of marjoram and 2.5 g of rosemary leaves from 1 day to 21 days, Adding 2.5 g powdered leaves of marjoram and 2.5 g of rosemary leaves from 22 to 42 days, Adding 5 g of powder of marjoram leaves from one day to the end of the experiment, Adding 5 g of rosemary leaves powder from one day to the end of the experiment, Adding 2.5 g powder of marjoram leaves and 2.5 g of rosemary leaves from one day to the end of the experiment. There was a significant (p ≤ 0.05) increase in the final body weight and cumulative weight gained, and a significant (p ≤ 0.05) improvement in the cumulative feed conversion ratio compared with control treatment, while no significant (p ≤ 0.05) differences were found in the amount of feed intake.

Poultry houses contribute 93% of the total amount of ammonia gas emitted from production facilities. The study aims to evaluate the efficiency of the biofilter for reducing environmental pollution by ammonia gas and using local and cheap materials. Two field experiments were conducted, A chicken (Ross 308, weigh 44.5 g) was raised in 35 days. Experiment unit dimensions are 1.2 x 1.5 x 2.5 length, width and height and each one of them was connected with a biofilter from the outside by air transport channel. The first experiment of three stocking densities (14, 16, 18) birds / m 2 and three replicates. The second experiment included the use of one SD (14 bird\m 2 ), 3 mixtures of rice straw and the conocarpus leaves as the medium of the Biofilter and three replicates. The efficiency of the biofilter (mixture of 0.30 Conocarpus leaves with 0.70 rice straw) was 91%. The efficiency of the Biofilter was about 91.7% when media 0.25 of Conocarpus with 0.75 straw rice and characterized by a high content of total fungi compared to the other two.

Poultry houses contribute 93% of the total amount of ammonia gas emittedfrom production facilities. The study aims to evaluate the efficiency of the biofilter forreducing environmental pollution by ammonia gas and using local and cheap materials.Two field experiments were conducted, A chicken (Ross 308, weigh 44.5 g) was raised in 35 days. Experiment unit dimensions are 1.2 x 1.5 x 2.5 length, width and height and each one of them was connected with a biofilter from the outside by air transport channel. The first experiment of three stocking densities (14, 16, 18) birds / m 2 and three replicates. The second experiment included the use of one SD (14 bird\m2), 3 mixtures of rice straw and the conocarpus leaves as the medium of the Biofilter and three replicates. The efficiency of the biofilter (mixture of 0.30 Conocarpus leaves with 0.70 rice straw) was 91%. The efficiency of the Biofilter was about 91.7% when media 0.25 of Conocarpus with 0.75 straw rice and characterized by a high content of total fungi compared to the other two.