الفهرس 
Structure of omega-3 fatty acids
MATERIALS AND METHODSOnly 14 pages are availabe for public view
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Abstract
This experiment was performed at a private rabbit farm, Gharbia governorate, during the period from July to September, 2016 in cooperation with Faculty of Agriculture, Animal Production Department, Tanta University. In current study, total of 40 New Zealand White weaned rabbits were assigned randomly into four similar experimental groups of 10 rabbits in each group (5 males and 5 females). All rabbits used in this study aged 5 weeks at the start of the experiment and weighed 702.58±12.70g as average live body weight (LBW). Rabbits in the all groups were fed commercial pelleted diet (CPD) containing 18% CP, 13% CF and 2800 Kcal/kg. Rabbits in the 1st group (G1), 2nd group (G2) and 3rd group (G3) were fed CPD supplemented with 0, 0.2, 0.4 and 0.6% olive oil /kg diet, respectively. Meanwhile, those in 4th group (G4) were fed un-supplemented CPD and served as a control group. The results of this study could be summarized as follows - In general, G3 rabbit group detected the higher live body weight at different experimental periods. - There were significant differences (p<0.05) between all experimental groups for average daily feed intake at different age intervals periods. - The highest ADG was obtained by G3 rabbit group followed by G2, G1 and G4, respectively (27.38, 26.61, 25.94 and 24.99, respectively). - The current study referred that, Oil treatment appeared significant effect on feed conversion rate at 5-9, 9-13 and generally at 5-13 weeks of growing rabbit’s age. At different age intervals of growing rabbits 5-9, 9-13 and totally 5-13 weeks, G1 group achieved 100% percentage of viability rate. - Carcass percentage and final body weight were not affected significantly by oil treatment at different experimental periods. In general, G1 group detected higher final body weight (2271.67) compared to other tested groups. Oil treatment had no effect on dressing percentage (%) parameters. - In general, higher blood total protein and albumin were obtained by G3 diet (5.67 and 4.25 g/dl) and lower values were detected by G1 diet (5.00 and 3.65 g/dl). - The results of this experiment showed significant influence of oil treatment on kidney function. Higher urea concentration was estimated in G3 group followed by G4. G1 and G1 groups (62.87, 47.10, 36.77 and 35.17, respectively). - The lower blood ALT concentration was obtained by G2 group (35.67 U/L) while the lower AST concentration was obtained by G3 group (12.33 U/L). In general, the estimated concentration of ALT and AST enzyme were in a normal range. - Current experiment explained that, in the end of experiment no significant influence was found with oil treatment on blood serum parameters of growing rabbits. - Immunity parameters of tested rabbits estimated as IGG and IGM bodies were not influenced significantly by oil treatment. - Our findings in this study may indicate intact histological architecture of kidney in rabbits of treated groups (G1, G2 and G3) as compared to control one (G4). - Also, mild infiltration of monocytes in the central hepatic vein and bigger and darker nuclei within hepatocytes were observed in G1 and G2 than in G3 - In conclusion, the positive effects of the tested olive oil supplements (0.2, 0.4 and 0.6% olive oil /kg diet) were observed on growth performance, feed efficiency and carcass traits in growing rabbits. So, it could be added olive oil especially with 0.6% olive oil /kg diet in growing New Zealand White weaned rabbits.