Well, first - you can't give terramycin and electrolytes at the same time. You have to give medicine alone in the water.
We also need the temps of the brooder or if the babies are fully feathered.
Are they all on chick starter up until this point?
How much terramycin are you giving in the water? What does it say on the package about the number of grams and dosage. In other words, is it Duramyin's terramycin, or say "10 grams per package" and the package is 6.4 ounces and the recommended dosage something like 400-800 mg per gallon?
As for treating, first let us know one thing - their discharge from their beaks - is it really smelly?
If it is, and it were my flock, I'd get a bottle of Sulmet and use that in their water as labeled for 7 days.
If it isn't, I'd get LS50 and use that in their water
2.65 ounces treats 25 gallons
2.65/25 = 0.13 ounce / gallon
0.13 ounces = 0.78 teaspoons / gallon
0.13 ounces = 3.69 grams (if you have a postal scale)
So essentially 3/4 teaspoon per gallon of water as the sole source of water for 7-10 days. (Verified by Foy's catalog.)
WIth ANY antibiotic you must replace the good living bacteria of their gut which are unfortunately killed by the antibiotics along with the bad bacteria.
If you're using any -mycin or -cycline product (LS-50, terramycin) you can't use yogurt. Use acidophilis capsules from the
walmart vitamin section, or grocery store, or pharmacy vitamin section. Or use Probios powder from the feed store. In either of those cases, mix the powder (1 emptied capsule, one crushed tablet, 1/4 t of probios) with just enough of something for each chick to eat quickly. If you have 30 babies, 30 capsules or 8 teaspoons of probios mixed in a cup of wetted crumbles would work. Take their food up one hour before - feed the wetted crumbles (mix water and powder, mix with crumbles, let set 10 minutes) because they'll be hungry. Make sure they all eat some. If you see some eat more, put them to the side in a box or something so the weaker ones can get their share.
If you're not using a -mycin or -cycline, or to help them be more thrifty and vigorous after they heal, you can use yogurt (plain unflavored ) mixed in the same type of damp mash. 1 teaspoon treats about 6 baby chicks. You can't use this now - but if you use weekly for the rest of their growing period, they'll grow so much better. This or less probios are great options. You won't need as much probios for healthy birds - just a bit.
Clean up all the noses you can. Use a new q-tip end for each spot, a completely new q-tip when you switch birds.
Another thing that would really help would be VetRx. If you dilute it with water, use that to clean up nares It helps them breath. Birds only heal if they can breathe. If they don't breathe, they dont' eat, and they won't live.
It's labeled for water use too but if you're using water meds you can't do that. But using on the babies (as you check each and clean each birds' nares) will help them heal better with a good antibiotic.
I'm so sorry you're having this experience.
Remember if you have other birds, do these babies last to prevent spread. Wearing a big men's shirt over your clothes and keeping it when them helps prevent spread, too.
Also wash out the waterers and (if you can) the feeders daily with good hot water. You want to prevent them from reinfecting themselves with the droplets that they spread everywhere.
Also make sure they have lots of good ventilation and fresh air.
I'm here if you need anything - I wish I could come help you doctor the babies. You have my help, prayers, and well wishes instead.
P.S.: If you want, you can mix electrolyte water and use THAT water to make the damp mash for them - that will help them with some electrolytes at least.
