This study evaluated the impact of thyme powder supplementation on the hen egg production (HD%), total egg production, egg quality, antioxidant and biochemical parameters of laying hens. One hundred and eighty Hyline Brown hens, 40 weeks old were randomly divided into 9 groups of 20 hens and subjected to one of the following treatments: T 1 (control diet), T 2 (5g/kg of thyme), and T 3 (10g/kg of thyme). Each treatment was tested using three groups of hens, which were subject to treatments from 40 to 47 weeks of age. The productive metrics were measured on daily and weekly basis in the period from 40 to 47 weeks of age, while the egg quality was measured after 56 days. Hematological, biochemical and antioxidants parameters were also determined at the end of the experiment. The results showed that the egg production and feed conversion ration were significantly improved in both thyme treatments (T 2 and T 3 ). Also, the PCV (%) and the WBC count. However, there was no significant difference in the egg quality between the thyme-treated and control hens. The hens on thyme-supplemented diets were found to have lower serum cholesterol concentration than those of the control. Supplementing a laying hen's diet with thyme significantly increased glutathione, while, decreased the malondialdehyde, AST and ALT activity in comparison to the control. Therefore, it can be concluded that thyme additives can be used in laying hens diet to improve egg production, egg quality, antioxidant and biochemical parameters in a dose-dependent manner.

This study aimed at detecting the effects of COQ10 with and without vitamin E on some semen characteristics of the broiler breeder males. Twenty-five males at 43weeks of age divided into five categories of treatment with five replicates. The first treatment (control group) included drenching with corn oil capsules only. The second and fourth treatments were about drenching with capsules containing the COQ10 enzyme at a concentration of 5 mg / male / day with and without10 mg of vitamin E whereas the third and fifth treatments included drenching with capsules containing the Q10 enzyme at a concentration of 10 mg / male / day with and without 10 mg of vitamin E. This whole scheme of treatments was to study their effects on certain semen and seminal plasma properties. The results showed a significant increase (P<0.05) in the ejaculation volume, both individual and mass motility in addition to sperm concentration, all accrediting the fifth treatment. Furthermore, the results clear a significant decrease in the percentage of dead and abnormal sperms. The COQ10 with and without vitamin E led to improved semen quality marking a reduction in AST and ALT, glucose concentration and total protein with improved antioxidant status referring to a high level of GSH and low MDA. We conclude from this study that COQ10 with and without vitamin E has the ability to improve the semen characteristics of age-old broiler breeder males and can improve the status of antioxidants in semen.

The study was conducted to determine the effect of adding water-soluble chitosan on some hematological and biochemical traits in the quail during rearing for meat production, twenty-seven male quail at nine weeks of age were randomly assigned to three treatments with three replicates, it was treated with chitosan for 28 days, according to the following concentrations, the first treatment (control treatment), the second and third treatments, water-soluble chitosan was added at a concentration of 0.2 and 0.3 g/L, respectively. The results showed that there were no significant differences among treatments in RBC, PCV, Hb, MCV, MCH, glucose concentration and AST and ALT enzymatic activity, while there were significantly increased WBC in both experimentsin addition treatments compared to the control treatment. The adding of the water-soluble chitosan at a concentration of 0.2 and 0.3 g/L resulted in a significant decrease in the concentration of cholesterol and triglycerides, while the adding 0.3 g/Lled to a significant increase (P≤ 0.05) in the total protein concentration, albumin and Globulin compared with the control group. We conclude from this research that the adding of water-soluble chitosan at a concentration of 0.3 g/L has the potential to improve productive performance and enhance bird health.