Green tea

Other Names:

Cha Ye


  • Antibacterial
  • Digestive aid
  • Diuretic
  • Antiinflammatory
  • Antiinfluenza
  • Antispasmodic
  • Antiviral
  • Antiulcer
  • Antioxidant

Green Tea

Camellia sinensis

Green tea (Camellia sinensis) leaves have been cultivated for their use in making traditional tea in China and Japan for thousands of years. Green tea leaves are a rich source of antioxidants and flavonoids. One of it's active chemicals is EGCG (epigallocatechin-gallate) which is known for its ability to increase the number of regulatory T cells, useful in fighting off autoimmune diseases. Other notable healing substances include fluoride, catechins, and tannins.

Antiviral: Green tea contains catechins, which are polyphenolic compounds that are known to exhibit strong anti-influenza activity. A study conducted on chickens by Lee HJ et al., 2012 showed that adding 10 g/kg of green tea to the diet of chickens showed significant antiviral protection against avian influenza.

The Chemistry of Tea Infographic by


Summary of Research Conducted on Green Tea and Poultry
FormSpeciesAmountTime periodResultsRef
PowderBroilers15 g/kg42 daysDemonstrated antioxidant properties. Shown to increase plasma uric acid and improve plasma lipid profile due to decreased LDLMH Alimohammadi Saraei ei al., 2016
ExtractBroilers0.1 to 0.2 g/kg42 daysIncreased body weight, feed efficiency and decreased caecal coliform bacteria countG Erener et al., 2011
ExtractLaying hens0.5 to 2%14 daysSignificantly reduced shedding of oocysts in feces of chickens infected with Eimeria maxima (Coccidiosis).Jang et al., 2007
PowderLaying hens0.30%42 daysHelped improve Haugh unit and increase albumen percentage.Biswas et al., 2001
ByproductLaying hens4 to 6%42 daysSignificantly increased egg production rateYang et al., 2003
PowderLaying hens2%42 daysHelped to reduce cholesterol content and thiobarbituric acid value (TBA) of the egg yolk; thus implying potential effects on egg quality parameters.D Uuganbayar et al., 2005


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