Effect of Probiotic, Prebiotic, Synbiotic and Medicinal Plants on Productive Performance of Broilers Fed on Different Levels of Protein


  • Majdi A. Kairalla Department of animal production-Faculty of Agriculture- University of Sebha, Libya
  • Abdalhakim A. Aburas Department of animal production-Faculty of Agriculture- University of Aljabal Algarby, Libya.
  • kurmuan A. Omar Department of animal production-Faculty of Agriculture- University of Alexandria,




probiotic, prebiotic, synbiotic, medicinal plants, Performance, Broilers, Protein


The aim of this study was to investigate the response of broilers fed on test diets containing non-antibiotic growth promoters; Probiotic (BioPlus 2B), Prebiotic (TechnoMos), Synbiotic, and medicinal herbs (Mixture of Origanum majorana, Foeniculum vulgare, and Carum carvi in ratio 1:1:1), each within two dietary protein levels (normal and low), on these broiler performance. The study was carried out at the Poultry Research Center, Faculty of Agriculture; Alexandria University, Egypt. The experimental period lasted for 42 days. A total number of 500 days from Cobb broiler chicks, with similar average live body weight, were randomly distributed into 10 treatments. Each treatment comprised of 5 replicates of 10 chicks each. Ten experimental diets were formulated to be approximately isocaloric and cover all nutrients required for broiler throughout two stages of growth periods, starter diets (1 - 21) and finisher diets (22 - 42) days of age. Ten experimental diets were consisting of two levels of crude protein (recommended or low (85% of recommended)) and five feed-additive programmes (control, probiotic, prebiotic, synbiotic and medicinal plants). In general, feeding broiler lower crude protein levels (-10% of NRC) resulted in poorer growth performance, which was partially compensated with the non-antibiotic additives. Among the additives, synbiotic had positively significant effects on FCR, BW.


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How to Cite

Kairalla , M. A. ., Aburas , A. A. ., & Omar, kurmuan A. . (2018). Effect of Probiotic, Prebiotic, Synbiotic and Medicinal Plants on Productive Performance of Broilers Fed on Different Levels of Protein. Al-Mukhtar Journal of Sciences, 33(4), 306–322. https://doi.org/10.54172/mjsc.v33i4.298



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