Fifty Saidi ewes of about 4-6 years allotted to 2 feeding groups. control group < /p> (M) fed 100% maintenance and treated group (2M) fed 200% maintenance. Each group was divided into two subgroups, injected (IP) and non-injected (NI) with progesterone hormone. The M and 2M ewes groups diets were given diets from mating till 11 days of mating. then after and till that to the end of the experiment both groups fed according to the feeding system in the farm. Injection with (P) was given in day 11 of mating. Blood samples were taken before mating zero. 11. 16, and 21 days of mating for determination serum progesterone. T3 and T4 concentrations. rectal temperature (RT) respiration rate (RR) were recorded in both groups at 0. 30. 60, and 120 day of mating also before and after parturition. The re5ults obtained can be summarized as follows: Ewes fed 2M had higher conception rate, and tambing rate. and total lambs than those fed M either injected or non injected. Ewes fed on 2M diet had higher birth weights of lambs than those fed on M one. Ewes fed on M diet had higher (Ps0.01) serum progesterone concentration at day 11 and lower (Pr-0.01) at day 16 after mating compared with those fed on 2M one. Ewes injected with progesterone had higher (Pr-0.01) serum progesterone concentration than that of NI ewes at days 16 and 21 after mating. Ewes (IP) had higher RT (P<0.05) at mating and (Ps0.01) at day 30 till before parturition than those (Ni). Ewes fed on (2M) diet and (IP) had higher RT than those of other groups at day 30 after mating till after parturition. Feeding level or progesterone injection had no significant effect on RR. Progesterone injection had no significant effect on RR, with exception of that before and after parturition, which were higher (lP) ewes than (N!) ones. Ewes fed on (2M) diet had higher serum T3 and T4 concentration than those fed on (M) one. Ewes (IP) had higher serum T3 before mating till day 21 after mating. whereas serum T4 concentrations were slightly higher in the injected ewes than that of (NI) ones at days 11, 16 and 21 after mating. Ewes fed on (2M) diet and non-injected with progesterone hormone had higher T3 and T4 before and at mating whereas ewes fed on (2M) and injected had higher T3 and T4 concentrations at days 11, 16 and 21 after mating compared with other treatments.