Dose question

[Henhouse Harlot]

I have an almost-year-old Easter Egger hen who has a nasty, seriously infected wound on her breast that I just discovered. (Chickens are too good at hiding things!!!) She had a nice, long soak in an Epsom salt bath, and then I saturated the entire area with Schriener's solution. (What it is, check out the link!)

https://www.azurestandard.com/shop/product/outdoor-garden/animal-care/liniment/herbal-solution/8448

Now, she's resting in my hospital cage while I try to figure out how much antibiotic to give her. I have 500mg Amoxicillin capsules, and some liquid Cephalexin 250mg/per 5 mL. She weighs 2.9 pounds right now, although she's still pretty wet, so maybe 2 1/2 pounds? Anyhow! I need to know which one would be better, and how much do I give her? I've found different people have different answers, so I'm asking far more knowledgeable folks than myself!
@Eggcessive @Wyorp Rock @casportpony
Thank you!!!

 

[Wyorp Rock]

Do you have a photo of the wound?

Is it a Breast Blister or a wound from something like a predator/attack?
https://www.backyardchickens.com/threads/bumble-breast-breast-blister-graphic-pictures.1096276/

Amoxicillin would be good for general wounds, dosing is 57mg per pound of weight given orally twice a day for 7-10days.

Cephalexin would be good to use if there's bone exposed. Dosing is here:
https://poultrydvm.com/drugs/cephalexin

Hopefully the others will chime in with their suggestions too.

 

[Henhouse Harlot]

Do you have a photo of the wound?

Is it a Breast Blister or a wound from something like a predator/attack?
https://www.backyardchickens.com/threads/bumble-breast-breast-blister-graphic-pictures.1096276/

Amoxicillin would be good for general wounds, dosing is 57mg per pound of weight given orally twice a day for 7-10days.

Cephalexin would be good to use if there's bone exposed. Dosing is here:
https://poultrydvm.com/drugs/cephalexin

Hopefully the others will chime in with their suggestions too.

Oh my! I've never heard of "Bumble Breast" before! I'll get a picture; I think it might be that. Thank you!!

 

[Henhouse Harlot]

An Epsom salt bath is usually the first thing I do, and it was during the 1st bath that I examined her and discovered the wound(?). I gave her a bath this morning with Betadine and Epsom salts in the water, followed with a non-stick pad and more Schriener's. The dark stuff seems to be dried blood, and a lot of dead feather-covered scab stuff has come off, too. I've never seen anything like this! She was one of the birds that came with the place I just bought, so I don't know much about her history. Except that the coop needed to be cleaned badly, and it had shelves instead of perches. (I added perches immediately!)
She's asleep in my lap right now...

 

[Henhouse Harlot]

I've started her on Amoxicillin

 

[coach723]

I wonder if she's been roosting with that resting on the shelf and it's from rubbing or pressure. If you don't see improvement with the Schrieners then I would switch to a plain triple antibiotic ointment (any pharmacy in the first aid section). The amoxicillin will hopefully get it cleared up, but if she's roosting on that spot, it may recur. Check her feet for any issues like bumblefoot as well, which can make it hard for them to roost properly. For some birds, padding the roost with something they can't peck pieces off of and eat can help, an old bathtowel wrapped around it and secured can help.