Serious, distended intestine

Hello,
I am fairly new to chickendom. going on four years. One of my first hybrid layers has a very distended, swollen, red rectum. I think she was the one with blood in her stool and maybe the watery stool too. I was hoping it was undigested worms when I first saw it. This has been around for months now. Then I noticed her pasty butt.
Washing it this morning I found it was worse than that and the smell nearyly made me throw up several times.

Anyone here a good source on chicken rearends? She loves to eat still. Feeding her hot water and honey. Some meal worms and organic grain sprouts. I have antibiotic and electrolyte in water but my sick birds never seem to go for that.
Is she in pain? Probably alot when she defecates. I hope I can get help here.
Do you think it could be a worm thing? Is there something I am not doing I need to do for my chickens to keep this from happening?
I am grateful for your help.
thank you

The local farm institute is something too I will phone for help.

 

Sure looks the same but mine has it alot worse.
What is the big dark ball at the end that seems part flesh part defecation if it is from the cloaca?
I sure hope it's not a ball of hard blood. Pics as soon as I can get them up.
I am thankful for the links. Started her on the yogurt meals. soaked her today with vinegar water, and poured hydrogen peroxide over the swollen back end. Dark parts wont come out yet. I have been pulling out hardened broken cooked egg out of that hole which is really smelly.
Just did not figure out if it was the vent or the rectum it was coming from. So defecating has been a problem for awhile it seems.

I need some good antibiotics. Soak her in warm salts daily. Douse with hydrogen peroxide or put in bath.

 

I think you might be right. My PC is not acknowledging my media reader. Ascites or peritonial inflammation would include liquid and bacteria backing up from the oviduct upward. don't know what to do next. reading further...

 

Finally, got the reader working. here is the only pic for now


Very sore looking. This is after a bath and cleaning everything off. What is left is like a blood ball. Oozing after eating yogurt and layer mash.
Underneath the blood ball is red raw flesh. I should not have tried to ease it off. Is polysporin alright for a wound like that? I have doused it with hydrogen peroxide. The link for peritonitis says to get a culture of what comes out to rule out different diseases. I am going to pick up something for the infection. I don't know yet where to take a sample.
Anyone deal with peritonitis before or do you think this is still just prolapse? She is hunched over, fluffed out, sleepy. Breathing maybe is too shallow I could be wrong.
I just hope I can help her.