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Haematology, Lipid Profile, and Serum- Biochemical Indices of Rabbits Fed Varying Levels of Clove Syzygium aromaticum bud (SABP)
Abstract
This study evaluated the effects of dietary inclusion of Syzygium aromaticum (clove) bud powder on haematological parameters, serum biochemistry, and lipid profiles in rabbit bucks and does. Four dietary treatments were used: T1 (0 g/kg), T2 (5 g/kg), T3 (7.5 g/kg), and T4 (10 g/kg). Results demonstrated that moderate inclusion, particularly at 7.5 g/kg (T3), significantly improved haematological indices, including haemoglobin, packed cell volume (PCV), and red blood cell (RBC) counts, indicating enhanced oxygen-carrying capacity and erythropoiesis. Total white blood cell (TWBC) counts were also elevated in T2 and T3, suggesting improved immune responses. Differential leukocyte counts revealed increased lymphocytes and decreased neutrophils and eosinophils at moderate doses, reflecting enhanced adaptive immunity and reduced inflammatory stress. Serum biochemical analysis showed reduced levels of aspartate aminotransferase (AST) and alanine aminotransferase (ALT) in T3 and T4, indicating improved liver function, while total protein levels peaked in T2 and T3, reflecting improved protein metabolism. Lipid profiles were significantly modulated by clove supplementation. T3 and T4 groups exhibited reduced triglycerides, low-density lipoprotein cholesterol (LDL-C), and very-low-density lipoprotein cholesterol (VLDL-C), alongside increased high-density lipoprotein cholesterol (HDL-C), suggesting a cardioprotective effect. T3 (7.5 g/kg) emerged as the optimal inclusion level, enhancing haematological health, immune competence, liver and kidney function, and lipid metabolism without causing adverse effects. Excessive inclusion at 10 g/kg showed diminishing benefits and potential hepatic stress. The findings support the use of Syzygium aromaticum as a functional feed additive to improve physiological and metabolic health in rabbits.