Emergency please help

[Kiki]

You need to convert the pounds to kilograms first.
To do so you divide by 2.2.


Then you multiple by the dose and then divide by the strength in the bottle.

 

[FlyingNunFarm]

I kg and 1 pound are not the same thing though.

I showed the math above.

1 lb is .45 kg. I do believe the op is overseas so kg are the more natural measurement.
If the birds are roughly .5 kg then half the dose would be correct.
If 50 mg per 1 kg is .25cc then 50 mg for .5 kg would be .1cc

Not trying to argue! Trying to make the math makes sense.

 

[Kiki]

Correct!

.45 x 50 / 200 = .1135...

so if the OP wants to use the 50 mg dose he would use .1 ml
and if he wanted to use the 200 mg dose it is .45 ml

 

[rebrascora]

I think it is important to point out that some of these birds are meat birds (Bresse and Cornish cross) so at 5 or 7 weeks they will weigh a lot more than your average layer. Getting an accurate weight for each bird to be treated is very important.
It seems that this antibiotic is to be given IM (I don't know if it can be given orally as well like Tylan) and from the info quoted by KikisGirls, it can cause severe swelling and we don't know for sure that this antibiotic will even treat the issue. Added to that, if the meat birds are going to be butchered, then it would not be good to treat them with an antibiotic at this stage. My personal view would be to use the Vet Rx and see how they get on or seek veterinary advice if an antibiotic is to be administered or euthanize if they are too sick and dying. The wrong medicine or dose given to a sick animal can kill it. To me this is why medical professionals should be in charge of dispensing antibiotics. Antibiotic resistance is something that could end up affecting us all and occurs as a result of the wrong antibiotic being used or the wrong dosage, which not only includes how much to administer but how often to administer. You might think it is just a chicken and it's not that important but it's meat or eggs are destined for the food chain and resistant bacteria could be passed along through those means....... Just my opinion!

 

[Kiki]

I still thing based on the very first post only that it could be signs of coccidiosis.
BUT the breathing/sounds don't fit...that could be a respiratory disease.
Respiratory diseases don't "go away."

 

[rebrascora]

Some respiratory diseases are viral and need to run their course just like the common cold in us humans and antibiotics will not help them. I have seen respiratory problems in my flock on occasion. I have not treated with antibiotics and they got better. I think the Nutri Drench or any good poultry vitamin supplement is a good idea as it will support the immune system, Vet Rx or Vicks Vapour Rub should help to open the airways and make breathing easier.
It may be that there is also coccidiosis going on and a faecal test would show that. If testing is not available it might be worth treating with Corid/Amprolium as there are no serious implications to using that medication out of context.