No tube feeding won't fix a crop issues but it would provide more nutrition and fluids to ensure she was getting enough....to see if that helps her. It's just a guessing game to try to figure out what's wrong with her and it's the first thing to try/to make sure of.
You basically stick a tube...
She got a little better when you were making sure she was getting food and giving her Nurti-Drench, right?
Then she got worse again when you added her back to the flock?
Are you tubing her the food straight to the crop?
It sounds like you might be forcing it and perhaps causing some to go down...
Unfortunately, being vaccinated does not prevent the disease.
It's possible that she has it, but it's much more likely that you're dealing with a nutritional deficiency.
Please please don't offer corn anymore at all.
Pretty much any commercially made crumbled or mash or pelleted type feed is...
It's highly unlikely that she broke a leg. It is much more likely she's showing signs of an illness or a nutritional deficiency. Nutri-Drench is good to have on hand. If you can go get some go get some today. If not, take about two tablespoons of the chicken feed and get it a little bit...