| Summary: | The aim of the present research was to investigate the effect of Bulgarian additive Vemoherb-T (dry extract of the annual plant Tribulus terrestris – L), produced by Vemo 99 Ltd Company, Sofia on main biochemical characteristics and hematological parameters of the blood in guinea fowl (Numida meleagris). An experiment was carried out with 30 Pearl-gray Guinea fowl (32 weeks old), distributed in two groups – a control and an experimental, 12 female and 3 male each. All birds were fed the same mixture for breeder guinea fowl. Vemoherb-T was supplemented to the compound feed of the experimental group in a daily dose of 10 mg/kg body weight for a period of 12 weeks. The tested product decreased significantly the levels of total triglycerides (P < 0.05), total cholesterol (P <0.01) and glucose (P < 0.01; P < 0.001 in male and female birds respectively) in the blood serum. It was established significantly higher total protein- ((P < 0.001) and calcium (P<0.01) values in the blood serum of the treated birds. The addition of Vemoherb-T increased significantly hemoglobin level, the number of erythrocytes and leukocytes and decreased the number of eosinophils in guinea fowl from the both sexes.
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