Effect of Propolis Supplementation on Haematological and Biochemical Parameters in Lambs

In this study, the authors evaluated the effects of an oral supplementation of 1.5 mL/day of a 30 % ethanol-based propolis extract in newborn lambs over a 15-day period (with follow-ups at days 0, 7, 21 and 45) in comparison to a control group. Haematological, biochemical and coagulation parameters were measured, and results indicated that the supplemented lambs showed no adverse effects on liver or kidney function, and all measured blood parameters remained within physiological norms. Although many changes in the markers were related to time rather than treatment, the propolis-treated group exhibited slight numerical improvements in lipid metabolism (for example lower cholesterol and triglyceride levels at specific time-points) and a tendency towards higher weight gain. Minor variations were observed in some clotting measures, yet no negative effect on coagulation was proven. The authors conclude that propolis supplementation in lambs may serve as a promising complementary strategy in small‐ruminant production, although further studies are required to confirm its long-term benefits.