STOCKYARD
HORSE  DISCUSSION FORUMS

Originally Posted by astraia

Garlic can cause anaemia in horses (loss of red blood cells).

A recent study (done in 2005) found horses developed anaemia after being fed 0.2g/kg freeze dried garlic for several months. The research also showed that horses would voluntarily eat enough garlic to cause toxicity.

There are no known 'safe' dose rates available. Further study is needed but anyone feeding garlic long term should be careful.

On a side note, garlic is also toxic to dogs and cats, as are onions (similar toxin). I have seen several cases of severe onion toxicity in dogs after the owners had a BBQ and gave the left overs to the dog!