I only just read this post b/c I was searching for information on my own chicken. I know of a source for Vit. B. and antibiotics if you still need that information.
-D
Did you ever get an answer or find out why the eggs are gooey and sticky? I have a hen that is doing the same. I have only six hens and are all fed the same but one is laying an egg like you describe - and the shell is usually more brittle than the others.
Thanks.