الفهرس | Only 14 pages are availabe for public view |
Abstract The experiment aimed to study the effect of dietary supplementation probiotics (Saccharomyces boulardii and Bio-Plus) and organic selenium on hematological parameters, immune responses, meat quality, caecum content and productive performance of V-Line growing rabbits. A total number of 54 weaned V-Line rabbits were randomly divided into 6 equal treatments (9 rabbits / treatment). The 1st treatment (T1) served as control. The 2nd treatment (T2) rabbits received 0.6 g Saccharomyces boulardii (S.b.) / kg diet. The 3rd treatment (T3) rabbits received 0.4 g Bacillus subtilis and Bacillus iicheniformis (Bio-Plus) / kg diet. The 4th treatment (T4) rabbits received 0.6 g S.b. + 0.4 g Bio-Plus / kg diet. The 5th treatment (T5) rabbits received 0.3 mg organic selenium / kg diet. The 6th treatment (T6) rabbits received 0.6 g S.b. + 0.4 g Bio-Plus + 0.3 mg organic selenium / kg diet. The results showed that, supplementation of rabbit’s diets with different types of probiotics and/or organic selenium led to significantly improvement in growth performance (body weight, body weight gain and feed conversion) of V-Line rabbits as compared to control group. Selenium % of rabbit’s meat was increased (P<0.05) in the rabbits of T5 and T6 as compared to other treatments. Thiobarbituric acid reactive substance was decreased (P<0.05) in the meat rabbits of T5 and T6 as compared to other treatments. IgG, IgM and IgA were significantly increased in the rabbits of T6 compared to rabbits in control group. Hb concentration, Ht %, glucose, total lipids, total protein and globulin were increased (P<0.05) in the rabbits of T6 as compared to control group. Volatile fatty acids (VFA) levels were significantly increased in the rabbits of T2, T3, T4, T5 and T6 compared to control group. Ammonia level was decreased (P<0.05) in the rabbits of T3, T5 and T6 compared to rabbits on control group. Bacteria count was decreased (P<0.05) in the rabbits of T3, T4, T5 and T6 compared to rabbits in control group. Supplementation different types of probiotics and organic selenium improved economic indicator of treated groups compared to the control group. In conclusion, supplementation of different types of probiotics and organic selenium (0.6 g S.b. + 0.4 g Bio-Plus + 0.3 mg organic selenium / kg diet) had a beneficial effect on growth performance, immunological parameters and good health status of rabbit. Nevertheless, further studies are required to assess the efficacy of dietary probiotics on rabbits reared under hot environmental conditions. |