(pics added) red blood in chick stool back *after* corid treatment?

second_gen_chickens

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Quick summary: I was seeing blood & other symptoms from chicks, treated them with Corid, thought they were doing better, and then started seeing a lot of blood again. :(

Hi! *This is my first time raising chicks*, though I'm coming into it with some knowledge from friends and my mom's long experience, and a lot of obsessive reading over the winter.

I have three 4-week-old pullets (sex-linked -- "color pack" & "dominant copper"), which I got from a person who raises large batches from a local hatchery. They were on medicated starter with her, and she wasn't aware of any health issues, though she also wasn't confident about that. A day after I brought them home, I noticed one was *significantly* less peppy than the other three (hunching and fluffing in a corner most of the time, peeping insistently, though she was still eating and drinking some), and then started seeing blood (initially not a lot, then more and bright-to-dark red) in her stool, then some blood potentially from the other two.

Based on that, it seemed like the best explanation was coccidiosis, and I started them on Corid at the .0125% dosage (on the assumption that since their feed is also medicated at .0125% amprolium, the combination should take them to the .025% the manufacturer recommends for a serious infection across their intake). They all (especially the sickest one) became significantly more active and peppy after a day or two, and I stopped seeing any blood. So... I was feeling pretty reassured that this was coccidiosis *and* that they were doing better 🙃 As of today, they've been on it five days, and I was going to stop treatment and give them some additional nutrients to make up for the thiamine blockers.

But this morning when I went in to check on them, I saw a LOT of liquid, bright-to-dark red blood again (after several days without), and while they all seemed pretty peppy and active, the one who had been sickest had started doing her really insistent peep-peep-peep-PEEP again. (Another of the chicks had reddish stool, though I could be over-reading that based on worrying about them.) I'm hesitant to keep them on this dosage of Corid because of the thiamine issue -- but I genuinely don't know what to do, and I don't know why they'd suddenly start struggling again after doing so much better. The only thing that's changed in the last day or two is that they finally figured out how to eat the greens (bittercress, plus the last winter bok choi from my garden) that I was giving them as a treat, but they're also eating their grit, and I assume that an issue with a new strain of coccid would take way longer to show up.

What should I do? Is this likely to be a totally different health issue? If it *was* cocci, should I keep them on Corid longer despite the thiamine blocking? Is consistent blood ... not an issue...?? I'm really, really worried about them.

I can't take pictures at the moment, but can do so later if it's helpful. :(
 
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Definitely post pics. Chickens will shed intestinal lining which will look like blood. My chick did it and I was very worried it was coccidiosis but then it turned out to just be intestine stuff. Do you have other chickens? I wouldn't continue with the greens until you know exactly what this is.
 
Hi! So the chicks have been fairly peppy all day yesterday and so far this morning, and I didn't see any additional blood yesterday after the morning -- but this morning again there was a big splotch of blood.
PXL_20210326_145024688.MP.jpg


The one on the left was there when I came in to check on them, so I don't know who left it -- it's hard to see, but it is a bright, dark red, definitely blood. The one on the right was left by a chick (one of the two peppier ones) while I was sitting with them, and is more pinkish; I've been assuming that's intestinal lining, not blood, though I sure don't know. It's very different from the one on the left, which basically looks like mostly blood/clots with a little bit of the white urates on top.

I'm also finding spots of blood absorbed by the litter:
PXL_20210326_145123927.MP.jpg

(again, sorry these are hard to see -- trying to angle my phone inside the brooder while the chicks get excited and try to flutter up on top of my head is a familiar problem here, I'm guessing)

I cleaned the brooder out fully last night just before the chicks went to sleep, so I'm confident these are from sometime this morning.

Today makes day 7 on Corid (at roughly .0125%, in combination with their medicated feed, which is at .0125%). Based on other threads here and the Damerow "Chicken Health Handbook", it sounds like it's ok to keep them on Corid for 10-13 days? Is that... actually going to help them? Or is this maybe now a case where the sickest chick is still bleeding because she's acquired an opportunistic bacterial infection via the coccidiosis (something I hadn't been thinking about, that the Damerow book warns about)?

Also: should their water dosage be increased to .024%? I just realized this morning that my logic around water at .0125 + feed at .0125 might be totally wrong. (I'm supposedly a programmer, but as soon as I'm worried about something my ability to do math goes right out the window...)
 
also -- I don't have any other chickens, and these are the first chicks I'm raising. They came unvaccinated from a hatchery and spent their first three weeks with someone in the neighborhood who has her own flock and also raises batches of hatchlings, so presumably the exposure was there.
 
It doesn't look like intestine lining. They have coccidiosis. Let me find someone who knows more about it.
 
@HKG thanks! Like I said above, I've already been pretty confident it's coccidiosis based on their behavior last week and the blood, and they've been on Corid at .0125% for 7 days already (in addition to their .0125% medicated feed). I'm trying to figure out whether I should continue the Corid at this dosage, increase the dosage, try to find a sulfa med, or do something else.
 

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