الفهرس 
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Abstract
The present study was carried out at the Poultry research center, Faculty of Agriculture, Alexandria University, during the period from January to February 2016. This study aimed to investigate the effect of Moringa oleifera leaves (MOL) on the productive performance, some physiological parameters and carcass traits of growing rabbits.Rabbits used in this study were Alexandria rabbit’s line. A new synthetic paternal rabbit line (Alexandria line) that was established and developed at the nucleus breeding rabbit unit of the poultry research center, Faculty of Agriculture, Alexandria University A total number of 120 weaned Alexandria rabbits (unsexed) aged four weeks were used in this study. Rabbits were randomly distributed into four groups of 30 rabbits each. Each group was subdivided into 10 replicates (3 rabbits each). Rabbits used similar in live body weight ranged between (680 - 700 g). Each group of rabbits was randomly assigned to one of the experimental treatments. The experiment lasted five weeks. The present experiment was designed to study the possibility of using Moringa oleifera at different levels in the growing rabbit’s diets and evaluate their effects on performance, carcass quality, and blood constituents. Experimental groups were as follows: The first group (control, T1) was fed on commercial diets, which were formulated to satisfy the requirement of growing rabbits. The second group (T2) was fed the basal diet supplemented with (10%) Moringa oleifera. The third group (T3) was fed the basal diet supplemented with (20%) Moringa oleifera. The fourth group (T4) was fed the basal diet supplemented with (30%) Moringa oleifera. The main results of this study can be summarized in the following points:
• Results indicated that BWG was significantly (P≤0.05) affected by Moringa Oleifera levels. The highest body weight gain was observed with the level of (20%) with an increase of 9.84% compared to the control group at 63 days of age.
• The level of 30% MOL was the lowest in terms of body weight gain but was less than average body weight gain for control group at all experimental period from 4-9 weeks of age.
• At all ages, Moringa Oleifera supplementation had no significant effect on feed consumption except when Moringa Oleifera was given during the age interval 7-8 and 8-9 weeks of age.
• Overall the experimental period different levels of Moringa improved feed conversion ratio compared to control, respectively (p=0.0077). The best feed conversion ratio with level was 20% MOL in rabbit feed diet compared with the rest of the groups, but the increased in the level of MOL in diet rabbits to 30% decreased the feed conversion ratio.
• Supplementation with 20% significantly (P≤0.05) increased Hb and PCV compared to those of the control group during the experimental period 9 weeks of age.
• There is a significant improvement in globulin levels by 11.4 and 25.0% in 10 and 20% MOL, respectively compared with control group, which affects a relative improvement in immune levels, but decreases the effect by increasing the level to 30%. Results indicated that A/G ratio under different dietary Moringa levels was significantly decreased (P≤0.05) compared to control by (14.8, 24.6 and 11.0%) with the three doses of Moringa, respectively.
• It is clear from the data analysis of variance that there were no significant effects of using Moringa oleifera levels on triiodothyronine (T3), T3/T4 ratio, insulin and growth hormone compared to control group during experimental period.