For many years, studies have been conducted to evaluate the effect of applying / supplementing garlic in different forms to wild and production animals. Here are some interesting results obtained from research literature.

  1. Feeding beef cattle a garlic/sulphur-containing product in their diet leads to a significant decrease in the number (66.8%, P<0.05), weight (21.6%, P<0.05) and oviposition (12%; p<0.05) of engorged female Asian Blue ticks (Costa-Junio & Furlong, 2012).
  2. A combination of garlic oil and cinnamaldehyde was supplemented via feed to beef cattle on pasture. This combination reduced the number of horn flies on the cattle (Moriel et al., 2017).
  3. Supplementing garlic oil to rumen fluid in an in vitro system significantly decreases methane production (Busquet et al., 2005).
  4. Ghosh et al. (2009) supplemented garlic extract to pre-weaned dairy calves. This resulted in a significant improvement in DMI, BW gain and FCR. In addition, faecal coliform counts were also reduced.
  5. Diallyl disulfide (DADS), a metabolite from garlic, was supplemented to sheep fed a roughage-based diet. DADS significantly increased the digestibility of OM and aNDFom, as well as energy utilization compared to control (Klevenhusen et al., 2011).
  6. Garlic powder was supplemented to 40 lambs (± 26 kg live weight). DM and CP digestibility, as well as VFA production, were significantly improved. Faecal egg counts were also significantly reduced 56 days into the trial (Zhong et al., 2019).
  7. A meta-analysis done by Ogbuewu et al. (2021) indicated that supplementing garlic to laying hens significantly improved hen day egg production, egg weight, eggshell thickness and eggshell weight.
  8. Garlic supplementation in poultry feed effectively regulates lipid metabolism, which is the predisposing factor for coronary heart diseases. In addition, garlic effectively regulated cholesterol levels with the advancement of age (Prasad et al., 2009).
  9. Mgocheki (2017) conducted a field experiment where 25 cattle were infested with Asian and African blue ticks. Cattle were sprayed with aqueous garlic extract. As a result, the number of attached ticks were reduced by 94% and 99%, respectively.
  10. Asian blue ticks were treated with garlic extract. At 100 mg garlic extract/ml, the adult tick mortality was 73%, and inhibition of egg production was 85%. Larvae mortalities were 69% (Shyma et al., 2015).
  11. Aboelhadid et al. (2013) investigated the acaricidal effect of garlic and onion oils on different stages of the blue tick. The 5, 10 and 20% garlic oil killed all adult ticks and larvae within 24h.
  12. Applying garlic via a pour-on or organic spray onto calves and beef cattle significantly reduced the fly count by 30 – 45% (Mohammed et al., 2016).


Garlium is a concentrated garlic product that can be supplemented via feed to wild and production animals. This may assist in reducing the number of attached ticks and flies.

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