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Effect of essential oil supplementation to diet on meat quality, fatty acid composition, performance parameters and intestinal microbiota of Japanese quails.

  • Kürekci, Cemil1
  • Özsoy, Bülent2
  • Hassan, Errol3
  • Özkan, Hüseyin4
  • Gundoğdu, Aycan5
  • Özsoy, Şule Yurdagül6
  • Yakan, Akın4
  • 1 Department of Food Hygiene and Technology, Faculty of Veterinary Medicine, Hatay Mustafa Kemal University, Hatay, Turkey. , (Turkey)
  • 2 Department of Animal Nutrition and Nutritional Disease, Faculty of Veterinary Medicine, Adnan Menderes University, Aydın, Turkey. , (Turkey)
  • 3 School of Agriculture and Food Sciences, The University of Queensland, Gatton, QLD, Australia. , (Australia)
  • 4 Department of Genetic, Faculty of Veterinary Medicine, Hatay Mustafa Kemal University, Hatay, Turkey. , (Turkey)
  • 5 Department of Microbiology and Clinical Microbiology, Faculty of Medicine, Erciyes University, Kayseri, Turkey. , (Turkey)
  • 6 Department of Veterinary Pathology, Faculty of Veterinary Medicine, Adnan Menderes University, Aydın, Turkey. , (Turkey)
Published Article
Journal of animal physiology and animal nutrition
Publication Date
Sep 01, 2021
DOI: 10.1111/jpn.13445
PMID: 32969077


The effect of essential oil (EO) supplementation on carcass characteristics of Japanese quails and interactions between ingredients and intestinal morphology were investigated in this study. A total of 250 quails were fed different diet: D1, basal diet (BD); D2, BD plus palmarosa oil (PO; 100 µg/kg diet); D3, BD plus lemon myrtle oil (LMO; 100 µg/kg diet); D4, BD plus α-Tops (mixture of α-terpineol, cineole and terpinene-4-ol; 100 µg/kg diet); and D5, BD plus cyclodextrin. Overall growth performance was determined at multiple time points during 35 days of experiment. Carcass characteristics (fatty acid, pH and colour), intestinal morphology and the expression levels of meat quality-related genes including the insulin-like growth factor (IGF-1), myogenin and avian uncoupling protein (avUCP) were examined at the end of the trial. Additionally, intestinal microbiome of quails was studied by next-generation sequencing-based culture-independent analysis. Although the inclusion of EOs into the diet had no effect on the growth performance of quails and the microbial profile, the significant changes in pH24 and colour (a*) of the quail's breast muscle (p < .05) in the group receiving PO were observed. Additionally, oleic acid content in the breast muscle was significantly higher in the EOs supplemented groups (p < .01). Quails fed the PO supplemented diet had higher villus and relatively rich in oleic acid. The expression levels of IGF-1 and myogenin genes in quail's muscle were not affected, but the expression of avUCP gene was significantly lower in quails fed with LMO and α-Tops (p < .05). The results demonstrated variable effects of these treatments on intestinal morphology. Taken together, dietary inclusion of EOs is found to be beneficial and hence can be recommended for improving the quality of poultry meat. © 2020 Wiley-VCH GmbH.

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