Olea europaea



  • Antibacterial
  • Antidiabetic
  • Anti-inflammatory
  • Antihypertensive
  • Antifungal
  • Antioxidant
  • Antiparasitic
  • Antitumor
  • Immunity
Olives are small fruits produced by the olive tree (Olea europaea), a deciduous tree or shrub that is native to the Mediterranean region. Olive trees, and their various parts, have been used in traditional and contemporary medicine for a wide range of ailments. Specific applications relating to poultry include:
  • Cardiovascular Support: A study conducted in 2012 on the effects of supplementing broiler chickens' diets with 10 g/kg of dietary olive leaves, showed that it had an anti-hypertensive effect and decreased incidences of ascites in chickens exposed to cold ambient temperatures.
  • Egg quality: Adding 1-3% olive leaf powder to the diet of 120 laying hens for 8 weeks showed that it helped to reduce egg yolk cholesterol content and egg yolk coloring agent.
  • Antimicrobial: Olive oil leaf extract has demonstrated strong antimicrobial activity against Campylobacter jejuni and Staphylococcus aureus (including methicillin-resistant S. aureus.
Summary of Poultry-associated Research Findings Related to Olive trees

FormSpeciesAmountTime periodResultsRef
Leaf PowderLaying Hens1 to 3% of diet56 dayscan be used for reducing egg yolk cholesterol content and egg yolk coloring agent in layer diets.H Cayan et al., 2015
LeavesLaying Hens10 g/kg of diet42 dayscould protect n-3 fatty acids in eggs from deterioration.Botsogloi EN et al., 2013
Dried & ground LeavesQuails10 to 20 g/kg of diet29 daysIncreased egg production and egg yolk colorChristaki EV et al., 2011


Scientific References