Other Names:

Common Thyme, German Thyme, Garden Thyme


  • Antioxidant
  • Antimicrobial
  • Insect-repellent
  • Antiseptic
  • Antihelminthic
  • Antifungal
  • Antigout


Thymus vulgaris

Thyme (Thymus vulgaris) is an evergreen herb from the mint family. It has been used for culinary, medicinal, ornamental and folk medicine uses since ancient times, and in a variety of different cultures. Thyme has an herbaceous and slightly floral aroma. It loses its aroma quickly with heat. Thyme is used in fresh and dried form, a whole sprig (a single stem snipped from the plant), and as an essential oil extracted from the plant parts. Volatile oils of thyme are among the main essential oils used in the food industry and in cosmetics as preservatives and antioxidants. Thyme contains several beneficial bioactive chemicals, with the most important being thymol.

Antioxidant: Thyme oil shows potential for improvement of intestinal barrier integrity, antioxidant status as well as evoking an immune response in chickens.

Antimicrobial effects
Thyme essential oil has been proven in many experiments to be highly antibacterial and antifungal when tested on Gram positive and Gram negative bacteria, fungi and yeasts, due to its thymol and carvacrol content. Thyme oil and thymol decreased the growth of Salmonella typhimurium in vitro, particularly under anaerobic conditions.

Growth performance: 100 ppm of thyme can help improve body weight and feed conversion ratio in chickens.

Summary of Poultry-associated Research Conducted on Thyme

FormSpeciesAmountTime periodResultsRef
Essential oilLaying Hens 42 daysdiet Supplementation by combined form of PEO and TEO could have beneficial effects on performance parameters of Laying hens reared under cold stress condition.Mohsen et al., 2016
SpiceBroilers1 g/kg42 days +1 feed intake, +2 BW, -1 FCRSarica et al., 2005
ExtractBroilers50 to 200 mg/kg42 daysImproved growth performance, digestive enzyme activities, and antioxidant enzyme activitiesHashemipour et al., 2013
ExtractBroilers0.1 g/kg42 days +1 feed intake, +1 ADG, -1 FCRLee et al., 2003
ExtractBroilers0.2 g/kg42 days -5 FI, -3 ADG, -3 FCRLee et al., 2003
PowderBroilers10 to 20 g/kg42 dayshad positive effects on the blood biochemistry parameters of broiler chickensM Qasem et al., 2016


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