Breeding by AI (Chilled semen)

Question
We have tried to get my mare in foal for the last two years via chilled semen, she does not cycle regularly so has been on regumate and jabbed in,we have bred her three times this year and the vet has been scanning her to get the timing right and jabbed her off, we have used ovuplant too, but no luck! the last two cycles we have deep uterined her and the last time we also gave put in the antibiotics the following day and gave her an oxitocin jab the day after too just to be sure there was no infection,

Answer
I did not get the complete question, but I would assume it has something to do with gettign her pregnant. If artificial insemination is not working, I recommend live cover if possible. I have a stallion that produces "0" count semen while doing AI, but live cover works. It is some psychological thing with him. If you can track the cycle, or induce and use live cover, it might be one idea. The second idea is to take her to an Equine University in your area and have them work with her for a few weeks.   Also, normally spring breedings work better for some reason in nature. I hope this helps. If not, send me anothr question...