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  • Actinobacillosis

    Just wondering if anyone has had any experience with Actinobacillosis in horses?
    What did you do for treatment and what was the outcome? I know it usually affects cows but Im thinking one of my horses in the herd had it and want to know how contagious it is to my other guys...assuming no open mouth wound.
    Thank you in advance!

  • #2
    Are you referring to a “woody tongue” type disease as is more commonly seen in cattle? There are also other species of Actinobacillus bacteria that cause different clinical syndromes in horses so I want to make sure I understand what type of disease you’re referring to before writing more of a follow up.


    • #3
      We have it in cattle, lumpy jaw, one kind of foot rot and as above, woody tongue, the more common presentations in them.
      Generally it means we need to add more iodine to their minerals, that helps.

      That bacteria is every place and in most animals.
      A susceptible one or immunocompromised one can have clinical symptoms as those mentioned above, but generally won't directly transmit it to other horses, unless they also have a cut or poor immune system,

      With cattle, when several come down with it in a group, it tends to be because the ground is rough, muddy and causes foot bruises where the bacteria can then grow, or are eating out of big bales, that can cut their mouths as they pull hay out of them and so offer a place for that bacteria to flourish, if the animal has a low functioning immune system.

      We have been lucky never to have a horse with it.

      What is your vet telling you about protecting other horses from it?