Antioxidant effect of selected edible plant extracts on performance of broiler performamnce of broilers
Phiri, Mwape Thomas
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Edible plants contain biologically active compounds that have antioxidant capacity; these biologically active compounds are distributed in leaves, roots stems and fruits. Among other uses of biologically active compounds, they have been used in broiler production for improving weight gain and for their medicinal properties. The experiment aimed at evaluating the effect of antioxidant properties of selected edible plants on performance of broilers. Seven edible plants (Bidenspilosa, Ficussycomorus, Cleomegynandra, Solanumaethiopicum, Hibiscus meeiusei , Opuntia vulgaris and Piliostigmathonningii) that are also used as medicinal plants were selected, of which three plants were used in broiler trials (Cobb 500) after screening for total antioxidant capacity. The experiment was conducted at the University of Zambia, School of Agricultural Sciences over a period of six weeks. The experiment was done in a completely randomized block design with 7 treatments. Six treatments were Ficussycomorus, Cleomegynandra andOpuntia vulgaris plant parts preserved in each of alcohol and vinegar. The control had no plant extract. There were three replications of each treatment. Differential white blood cell count was done on blood collected at 43 days of age. No significant differences (p<0.05) were found among the treatments for mean live weight, feed consumption and feed conversion ratio at 43 days of age. Significant differences (p<0.05) were found in heterophil levels but not basophils, eosinophils, monocytes and lymphocytes.
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