Effect of powdered rosemary (Rosmarinus officinalis) essential oil and phenolic compounds on broiler chickens zootechnical parameters


  • Khaoula FILALI SAMOUH Hassan II University, Ain Chock Faculty of Sciences, Immunology and Biodiversity Laboratory, Casablanca; Sidi Mohamed Ben Abdellah University (USMBA), Faculty of Science and Technology, Functional Ecology and Environment Engineering Laboratory, Fez 30500 (MA)
  • Abdellah ZINEDINE Chouaib Doukkali University, Faculty of Sciences, BIOMARE Laboratory, PO Box 20, EL Jadida 24000 (MA)
  • Joao M. ROCHA Universidade Católica Portuguesa, CBQF – Centro de Biotecnologia e Química Fina – Laboratório Associado, Escola Superior de Biotecnologia, Rua Diogo Botelho 1327, 4169-005 Porto; LEPABE – Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto; ALiCE – Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto (PT)
  • Noureddine CHADLI Hassan II University, Ain Chock Faculty of Sciences, Immunology and Biodiversity Laboratory, Casablanca (MA)
  • Sidi M. RAOUI Higher Institute of Nursing Professions and Health Techniques, Fes annex of Meknes (MA)
  • Faouzi ERRACHIDI Sidi Mohamed Ben Abdellah University (USMBA), Faculty of Science and Technology, Functional Ecology and Environment Engineering Laboratory, Fez 30500 (MA)




catalase activity, chitin, consumption index, essential oil, phenolic compounds, poultry, Rosmarinus officinalis, zootechnical parameters


This work aims at exploiting the essential oil (EO) and phenolic compounds (PC) of rosemary (Rosmarinus officinalis) in a formulation containing leaf powder stabilized with chitin (1%, w/w) to improve chicken meat and investigate their effect on qualitatively and quantitatively broiler chickens’ growth performances. To such a purpose, chicks, at 1 day of age, were distributed in pens on ground divided into four batches. The two control batches were fed with conventional feed, but the positive control contained flavomycin (0.5 g/kg) as growth factor. The two treated batches received a conventional feed supplemented with two doses of 20 and 50 g/kg of the developed formulation. Essential oil and phenolic compound contents in powdered leaves were, respectively, 1.20 and 22.86% in ethanolic extract. 1,8-Cineole (46.88%), followed by camphor (19.20%), α-pinene (9.56%), L.α.-terpineol (5.91%) and β-pinene (4.40%) were the main compounds of the used EO. The two batches of treated chicks showed a significant improvement in body weight (281.88 and 283.75 g, respectively), a decrease in feed conversion and a reduction in mortality (8%), when compared to the control batches. In addition, the elaborated formulation induced catalase activity used as an indicator of cellular antioxidant activity modulation.


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How to Cite

FILALI SAMOUH, K., ZINEDINE, A., ROCHA, J. M., CHADLI, N., RAOUI, S. M., & ERRACHIDI, F. (2024). Effect of powdered rosemary (Rosmarinus officinalis) essential oil and phenolic compounds on broiler chickens zootechnical parameters. Notulae Scientia Biologicae, 16(1), 11793. https://doi.org/10.55779/nsb16111793



Research articles
DOI: 10.55779/nsb16111793