I have a hen that will be 11 years old in June. She has a very big swollen area under her vent with pea-sized bulges in it. It's soft to the touch. It may just be her old age and sagging. She's always squatting, but has really small hard stools. I gave her about 1/3 of a suppository the other day, hoping if there is swelling, it will go down enough for her to have a good B.M. But I'm wondering.........can I give a half of one.......or even a whole suppository? Thanks.