Green Tea

Camellia sinensis

Green tea

Other Names:

Cha Ye


  • Antibacterial
  • Gastroprotective
  • Diuretic
  • Anti-inflammatory
  • Antispasmodic
  • Antiviral
  • Antiulcer
  • Antifungal
  • Antioxidant
  • Antitumor
  • Immunity
  • Hepatoprotective
  • Anticoccidial
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. The Chemistry of Tea Infographic by
The Chemistry of Tea Infographic by
Specific applications studied in poultry include:
  • 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.

Poultry Specific Studies

TypePlant PartDosageSpecific useResultsRef
Other0.6% in drinking water, 3 times weekly for 18 weeksantitumor, oral tumorsDecreased the incidence, number, and size of tumors.N Li et al., 2002
Otherleaves extractantifungal, Candida albicansGreen tea demonstrated a comparable anti-Candida activity with regard to nystatin in humans.A Ghorbani et al., 2018
Chickenspowder or extract0.4 g/kg dietanticoccidialEpithelium thickness was reduced by green tea and PC, compared to NC. Clostridium perfringens and coliform populations decreased in proportion to green tea inclusion rate and decreased in PC. Lactobacilli increased with green tea and were more for NC than PC. Green tea at the highest concentrations reduced blood glucose and LDL and VLDL cholesterol.K Jelveh et al., 2022