Yes, you can give her shots of antibiotics, the only issue is that most of the antibiotics were banned from commercial/OTC sale in 2017, and can only be obtained by prescription from a vet. We're unfortunately having to work with what @CCinVT has on hand.Out of curiosity. I used to raise bearded dragons and would from time to time get rescues that were in really bad shape and Id have to give them subcutaeous shots of antibiotics etc.
Is this something that is do able with a chicken too if you had to? Give her shots of antibiotics?
Subcutaneous injections are also rarely given in birds because of how long it takes for them to go into effect. Most injections are intramuscular and injected into the thigh.
It's looking better than it did yesterday -- I think the yellow is because of the infection.This is her poo this morning. Still yellow.
Possibly, but since you're packing it I doubt that it's anything more than moisture, not full liquid -- the gauze should soak up most of the liquid.Is there saline that still might be getting into the puncture?
Also, I can see where she's healing up!
If you feel you need to cut away the necrotic tissue, get a scalpel (or sharp pocket knife) and hold it over a lighter/flame until it turns reddish-orange. This will kill off any bacteria on it. Let it cool off back to normal temperature before SCRAPING at the necrotic tissue. Remember that less is better when you're scraping -- only remove the worst parts. It's better to miss a small area that can be saturated with antibiotics than to accidentally cut into healthy flesh.
The scraping will make it less uncomfortable for her, and it reduces the risk of accidentally cutting her (compared to forcibly cutting away the necrotic tissue, which can result in cutting tissue that isn't ready to come off.)