It could be that you made the bird too full, too fast. Or, your tube may have gone down the wrong pipe, so to speak. Instead of going half way down into the crop, sometimes we can overshoot and end up either in, or too near, the lungs. When this happens, you WANT the bird to cough otherwise it's called aspiration and the bird would likely die from it. The good thing is that you stopped immediately, the best thing is that the bird's still alive and the most wonderful thing of all is that the poor little sick bird has you to care for it !!!
Good Job!
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Does the above post look familiar to anyone? It should. It was the second post on this thread after the OP's. Now I don't mind when others add additional and insightful information along with repeating the very same (or very close to) information that I wrote about just the post above them. What I do take issue with is when they basically just regurgitate what I said, put it out there like it was their own idea to begin with and then sit back and take all the glory for 'coming up with a solution that nobody else had thought of,
Well, in this particular instance, that 'nobody' was me and I gave what I believe to be a good answer to the question. I'll admit that I didn't go into as much detail as others did, but it was only the second response, people!!! I like to do more answering to those questions that they actually ask, rather than just telling them what they have to do. But that's just probably me, IDK.
As you insert the tub you should be able to feel it going down on the right side of the birds neck into the crop. Once the tube is inserted you should also be able to feel it in the crop. The tube is correctly placed if you can feel the end of the tube in the crop.
A few things can cause the bird to vomit food.
1. Overfilling
2. Filling too fast
3. Tube not down far enough
4. Some sick birds can't hold very much
5. Pressure on crop from towel wrap or handling
If a large enough tube is used it's almost impossible to place it in the wrong hole (trachea). What type of chicken is it and how much does it weigh?
And not only is it possible to accidentally put it down the 'wrong pipe' (only people in the business call it a trachea) , but for a first-timer (who may not know a crop from a crap) it's actually quite plausible . I have witnessed it numerous times at my old veterinary clinic where I used to work. We'd be trying to teach somebody how to do it and then...oops,,,up would usually come some sort of foul smelling phlegm.
What's actually more important than the correct placement of the feeding tube in the crop, is not to put it all the way down until it reaches the very bottom of the crop. You do that, and you're just a few feedings away from a perforated/ruptured crop. And THAT'S a surgical procedure that'll run you up some pretty hefty charges !!!
But I guess if charts and graphs and diagrams and links are what the people on this site want, then I guess I'd better go back through my power points and dust off my old overhead transparencies so I'll know where to find them should I ever happen to need them.
Thanks for reading. And I didn't mean to break anyone's toes...(I would have said stepped on, but somebody on BYC told me not to worry about that...lol !!!