Akyildiz, SerhatOzcan, NidaDenli, Muzaffer2024-04-242024-04-2420172285-57502393-2260https://hdl.handle.net/11468/21763This study was conducted to evaluate the effects of two herbal extracts (Emerald and Gundelia tournefortii L. Seed) on growth performance, serum biochemistry and intestinal bacterial population in broilers. A total of 280 Ross 308 1-day-old male broiler chicks were distributed into 5 groups of 7 in each consisting 8 replicates per treatment for 42 days. Five treatments were used; control group received basal diet (without any herbal extract supplementation), the Emerald at 100 mg/kg diet and G. tournefortii L. seed extracts (GTE) at 2, 4 and 8 g/kg diet were added to basal diet. The addition of 4 and 8 g GTE to the diet resulted in significantly higher body weight compared with control group (P<0.05). Moreover, supplementing the highest level of GTE (8 g/kg diet) significantly increased intestinal lactic acid bacteria counts (P<0.05). However, no differences were observed among treatments for feed intake and feed conversion rate at the end of the study (P>0.05). In addition, serum uric acid (UA) and glucose (Glu) concentrations and aspartate amino transferase (AST) and alkaline phosphatase (ALP) activities were not affected by any treatment (P>0.05). In conclusion, our results showed that different dietary levels of GTE may improve the growth performance by increasing intestinal lactic acid bacteria counts.eninfo:eu-repo/semantics/closedAccessGundelia Tournefortii L.Growth PerformanceSerum BiochemistryBacterial PopulationBroilerArticle606165WOS:000413674700009N/A