Abstract
The present work aimed to define the antioxidant effect of addition graded levels (0 mg (T0), 500 mg (T1), 1000 mg (T2) /Kg diet) of dried M. oleifera leaves (DMOL) during the experimental period for 56 days duration on the productive, hematology and some serum biochemical parameters of fifty-one growing rabbits. The results indicated that the DMOL contents of chlorophyll a, b, vitamin c, vitamin E, total flavonoids, total polyphenols, condensed tannins and phytic acid were (1.09 mg/g DW), (0.34 mg/g DW), (0.95 mg/g), (0.75 mg/g), (5.06 mg/g), (2.32%), (1.72%) and (0.98%), respectively. The result of the final live weight, average daily weight gain (ADWG) and average daily dry matter intake increased significantly with increasing levels of DMOL in diets. Also, the improvement in feed conversion ratio (FCR) was significantly high among the two levels of (DMOL). The serum glucose and urea nitrogen levels significantly decreased as DMOL levels increased. Moreover, there were a significant increase (P P P p > 0.05) different among treatments. On the contrary, significantly (P P P > 0.05) to the values of group T1. There was a significant (P < 0.05) effect of DMOL supplementation on the percent of carcass, liver and total edible parts of rabbits across treatments, whereas, treatments T2 and T1 recorded better results than T0. Under the condition of the present study, the results suggest that DMOL supplementation up to 1000 g/Kg diet might improve performance, bacterial community, antioxidant, biochemical parameters and blood constituents of rabbits.
Highlights
Free radicals play a major role in the pathogenesis of many human diseases such as cardiovascular and cancer diseases [1]
The results indicated that the dried M. oleifera leaves (DMOL) contents of chlorophyll a, b, vitamin c, vitamin E, total flavonoids, total polyphenols, condensed tannins and phytic acid were (1.09 mg/g DW), (0.34 mg/g DW), (0.95 mg/g), (0.75 mg/g), (5.06 mg/g), (2.32%), (1.72%) and (0.98%), respectively
The DMOL contents values were of chlorophyll a (1.09 mg/g DW), b (0.34 mg/g DW), vitamin c (0.95 mg/g), vitamin E (0.75 mg/g), total flavonoids (5.06 mg/g) and total polyphenols (2.32%)
Summary
Free radicals play a major role in the pathogenesis of many human diseases such as cardiovascular and cancer diseases [1]. Moringa oleifera leaves contain a number of important vitamins A, B complex (B1, B3, B6 and B7), C, D, E, K, specific plant pigments with a good profile of amino acids and minerals (Ca, P, and Fe) [3] [4] [5] and negligible contents of secondary metabolites [6]. The biological activities of these plants are due to the presence of phytochemicals (flavonoids and other phenolics) in their leaves [10]. The protection against these radicals by natural antioxidants may be done by enhancing the activities of anti-oxidant enzymes, reducing the intensity of lipid peroxidation and inhibiting generation of free radicals [11]
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