Egg withholding period after Doxycycline and Colistin?

[PhilChicken]

Hi all!
I’m new to raising chickens, my father recently bought 30+ chickens and somehow I became their caretaker We have a large backyard lot so the chickens have made it their home, day by day looking after the chickens becomes easier and I’ll admit they’re growing on me.

Towards the end of February some of the chickens got hit with fowl pox and coryza, I was able to separate those birds and give them Doxycycline and Colistin medicine that’s added to their drinking water, as a precaution I decided to give this to the whole flock and I followed the advice of chicken supply shop for 1-2 weeks.. Most of the sick/symptomatic chickens recovered but unfortunately 3 didn’t make it.

To my surprise one of my hens in the coop of healthy chickens just laid eggs this morning and probably yesterday since the others are dirty However I have doubts about whether the eggs are safe for consumption as I read both online and on the medicine sachet that Doxcycline and Colistin aren’t recommended for egg laying hens...

Please advise me what to do and should I stop giving the antibiotics by now and how long to wait until the eggs are safe? Thank you in advance!!

attached pics are the eggs and some of my girls! They’re native Philippine Chickens. The brand of medicine I used was mainly AQUADOX and then Resbac in the beginning..

 

[DobieLover]

DC stays in the yolk a 2 days longer than the albumen before it cannot be detected. It has a 14 egg withdrawal period.
In most countries there is a zero day egg withdrawal period for Colistin in eggs.
So you should toss the eggs or feed them back to the hens cooked for 14 days.
There is some disagreement about feeding them back. I think it's just find. The amount of residual DC in the egg fed back to the bird would result in an undetectable amount of DC in the egg and would cause a nearly undetectable longer tail on a depletion curve for concentrations in the bird.