@casportpony I edited my post to say give metronidazole 250 mg per day for most full size chickens. I think it was poultrydvm recommended the high dose.
Thanks!
I love poultrydvm and most of the info is quite good, but the most my books say is ~50 mg per pound, and that is a lot according to my vets.
Yes, the powder is meant for aquarium use so dissolved in water.
If I were going to use that I think I would try mixing one pack (250 mg) in 10 ml of warm water, stir well and give 0.9 ml per pound of body weight.
https://www.ncbi.nlm.nih.gov/pubmed/16404985
https://www.merckvetmanual.com/poultry/histomoniasis/overview-of-histomoniasis-in-poultry
From this Merck site, If I am reading it correctly (looks like it is not up to date though) frequent working helps...Is this correct?
Yeah, no fda approved drugs for it, and the drugs that are effective are banned for use in poultry.
Nitarsone used to be something that we could get, but I don't think it's been available since 2015. This was a feed additive:
I thought 'imidazole' was referring to drugs in the metronidazole class- which are anti-parasitics, and snti- bscteruakss working against anaerobic bacteria.
- Metronidazole, ronidazole, and dimetridazole are in the nitroimidazole class of drugs.
- Fenbendazole and albendazole are in the benzimidazole class of drugs.
Some people get lucky treating with just metronidazole, but the four vets I have seen all recommend treating with Baytril too, and that's because they almost always get a secondary infection that if not treated will kill them.
"Once access into the digestive tract has been achieved,
H. meleagridis multiplies in the ceca and attacks the tissues of the cecal walls. As the disease progresses, a cheese-like, foul-smelling, yellow substance fills the ceca. This substance can vary in form from a hardened plug to more liquid in nature, and is composed of dead cecal cells and blood. In highly susceptible birds such as turkeys, the Blackhead protozoa then enter the bloodstream through the damaged ceca and are deposited into the liver, where they do even more damage, creating signature "bulls-eye" zones of necrosis (dead tissue). Occasionally,
H. meleagridis also enters into other organs such as the kidneys, lungs, heart, and brain.
Blackhead does not kill the infected bird, and the disease requires a secondary bacterial infection to be virulent and eventually fatal. Escherichia coli, Bacillus subtilis, and Clostridium sp. are some of the bacteria noted in the secondary infections that caused death (McDougald, 2005)."
Source:
https://attra.ncat.org/attra-pub/viewhtml.php?id=343