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Dec 31, 2024Keywords:
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Main Article Content
Growth Performance, Hematological Indices, and Hepatic Function Biomarkers of Broiler Chicks administered Varying amounts of Phytogenic Additive (Scent Leaf) Meal
Abstract
This study investigates the potential of Ocimum gratissimum (scent leaf) as a phytogenic feed additive in broiler chicken diets. Exactly 200-day-old Cobb 500® broiler chicks were randomly allocated into five treatment groups, each receiving varying concentrations of scent leaf aqueous extract (0, 25, 50, 75, and 100 g per 5 L of water) over eight weeks. Growth performance parameters, including body weight gain, feed intake, and feed conversion ratio (FCR), were monitored during both the starter (0–4 weeks) and finisher (5–8 weeks) phases. Haematological indices (PCV, Hb, WBC, RBC, and MCV), as well as hepatic function biomarkers (total protein, albumin, ASAT, ALAT, creatinine, urea, and glucose), were assessed at weeks 4 and 8. Results revealed that while growth performance was not significantly (P > 0.05) affected during the starter phase, broilers in the 25 g/5 treatment group (T2) exhibited the highest weight gain and most efficient FCR during the finisher phase. Haematological analysis indicated a significant (P < 0.05) improvement in PCV, Hb, and WBC at the starter stage in T2, although a decline in RBC and platelet counts was observed at higher dosages. Liver function tests indicated that scent leaf supplementation significantly (P < 0.05) increased total protein, albumin, ASAT, and glucose levels at 1-4 weeks, while these effects decreased by weeks 5-8, suggesting a transient impact. It is therefore recommended that O. gratissimum, as a natural, cost-effective alternative to synthetic growth enhancers, can be used in poultry production at a relatively lower dosage. Further studies are also recommended to explore its long-term effects and optimal dosing strategies.
