I’m sorry to hear this.
Unfortunately antibiotics can knock their appetite. Zithromax is often well tolerated but when it does knock the appetite it can do so quite a lot.
Please urgently step in with syringe feeding. It is important that you also switch from the routine weekly weight checks and instead weigh daily (each morning before the first syringe feed of the day is best for accuracy). This enables you to more closely monitor hay and syringe feed intake. You are looking to keep their weight stable each day. This means you need to feed at least 60ml per day.
Small poops are due to lack of hay intake (poop output being 1-2 days behind food intake so it could mean your piggy has not been eating enough hay for a couple of days already).
Hay makes up 75-80% of daily food intake and it is that which the syringe feeding is replacing.
Mix their normal pellets with water to make a mush and use that to syringe feed as the emergency alternative in the absence of critical care.
I hope your piggy is ok
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