Other Names:

Cultivated Garlic


  • Antibacterial
  • Antiparasitic
  • Snake-repellent
  • Rodent-repellent
  • Insect-repellent
  • Antihelmintic
  • Antioxidant
  • Anticoccidial
  • Insect-repellent
  • Antimicrobial


Allium sativum

Garlic (Allium sativum) is well known for its use as a spice and herbal medicine in humans for thousands of years. It contains many useful bioactive compounds such as alliin, diallylsulphides and allicin. Garlic has been shown to have anti-thrombotic activity, lower blood lipids, blood tension, antibacterial properties, potent inhibitor of food pathogens, and has cardio-protective effects.

Summary of Research Conducted on Garlic Related to Poultry

FormSpeciesAmountTime periodResultsRef
Raw PowderBroilers5000 mg/kg49 daysMarginally improved weight gainGbenga et al., 2009
SpiceBroilers1 g/kg42 days -5 feed intake, -5 BW, 0 FCRSarica et al., 2005
JuiceLaying hens3.75 to 15 ml21 daysIncreased egg weight and mass, higher albumen height, improvement in Haugh unit, lower albumen and yolk pH, reduced bacteria count in egg contents when challened with E.coliK Mahmoud et al., 2010
PowderLaying hens1 to 5%42 daysLowered serum total cholesterol levels in Laying hens, significantly decreased content of egg yolk cholesterol, and increased Haugh unit during egg storage.K Lim et al., 2006
PowderBroilers5 to 10 g/kg42 daysImproved production performance by improving weight gain and FCRA Kirubakaran et al., 2016
Fresh PowderBroilers1 to 3%42 daysmay enhance or depress humoral innate immunity, depending on the rate and period of time used in the diet.R Ali Jafari et al., 2012
BulbBroilers5 g/kg42 dayshas a systemic anti-hypertensive effect and could decrease ascites incidence without impairing performanceS Varmaghany et al., 2015
Oil SprayEnvironment10% --Significantly reduced northern fowl mite populations.T Yazwinski et al., 2005
ExtractBroilers1 to 1.5 g/kg49 daysUseful for preventing subclinical Necrotic Enteritis caused by Clostridium perferinges, and useful for achieving improved performance in birds.A Jimoh et al., 2013
PowderBroilers0.5 to 1 g/100 g42 daysIncreased body weiht, feed utilization and efficiency, and high improvement of blood lipid profileN Puvaca et al., 2015
Essential OilBroilers300 mg/kg42 daysSignificantly decreased Clostridium countsF Kirkpinar et al., 2011
Dried FreshBroilers20 kg/ton50 daysSignificant decrease in total cholesterol, total triglyceride and adipose tissueS Dehkordi et al., 2009
Volatile OilBroilers0.10%42 daysSignificantly decreased serum levels of cholesterol, LDL, and triglyceride, as well as increase levels of HDL.S Rahimi et al., 2011
PowderBroilers1 g/kg49 daysLowered cholesterol levelsN Hosseini et al., 2011
Garlic is said to contain chemicals which act as a natural snake repellent. Mix together half a dozen of crushed garlic cloves in with water to create a spray, to spray around the exterior of the area in which you want to repel snakes.

Prevention of Necrotic enteritis (NE)
Adding 1.0 to 1.5 g/kg of garlic powder to your flock's diet may help in the prevention of Necrotic enteritis.

Control of Northern fowl mites
Spraying hens with a mixture of 10% garlic juice in water is a natural, effective way to decrease the presence of northern fowl mites in laying hens.

Control of Red Poultry Mites
Garlic extract is effective as a repellent against red mites, demonstrating a 96% success after two successive sprays.

Adding 2.5 mg/bird of garlic to the diet of chickens infected with Ascaridia galli (roundworms) can help reduce internal parasitic worm load.

Egg Quality
Supplementing laying hens' diets with 1-3% garlic powder is beneficial for egg quality.

Garlic powder may be beneficial for poultry suffering from Coccidiosis. It has been shown to help chickens fight off Eimeria.

Ascites syndrome
Adding 5ug/kg garlic bulb into the diet of chickens may help prevent ascites syndrome in chickens.


Mountain Rose Herbs