Effects of Saponin Feed Additive with Oregano Essential Oil on Carcass Characteristics, Antioxidant Status and Immune Response in Broilers.

Document Type : Original Article


1 Department of Animal Production, Faculty of Agriculture at Moshtohor, Benha University, Egypt

2 animal production department,faculty of agriculture, benha university, egypt

3 Animal Production Dept., Fac. of Agric., Benha Univ., Egypt.


The objective of this study was conducted to evaluate the effects of adding dietary saponin powder , essential oils (thymol and carvacrol) and their interactions on broiler chicken carcass characteristics, antioxidant status, and immune response. The experiment followed a 4×2 design, with different levels of saponin (0, 10, 20, and 40 ppm/kg diet) and essential oil at 0 (control) and 50 ppm. A total of 240 one-day-old Ross 308 chicks were randomly divided into eight treatment groups, each with three replicates. The results showed that birds fed a basal diet supplemented with saponin at 40 ppm/kg diet and essential oil at 50 ppm had significantly improved live body weight, carcass traits, and total edible parts compared to the control group. The combination of saponin at 40 and 20 ppm, along with essential oil at 50 ppm, resulted in significantly lower levels of serum urea, uric acid, creatinine, AST, and ALT compared to the other groups. Broiler chicks fed diets containing saponin at 20 or 40 ppm, along with essential oil at 50 ppm, showed significantly increased levels of serum GPX, IgG, and IgM, as well as a significant decrease in serum MDA, compared to the other groups. These findings suggest that incorporating saponin at 40 or 20 ppm, along with essential oil at 50 ppm, is more effective in enhancing the antioxidant response and immune profile compared to other dietary combinations.


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