colic from hormones

Hello clauee,
How many months old is the yearling? I do not know of any commonly recognized hormonal induced colic’s though behavioral changes are usual. If there is a strong correlation of the onset of colic occurring during estrus I would have the veterinarian out to palpate and ultrasound the repro tract looking for abnormalities and ovulation in particular comes to mind, though I have not seen any such cases. Preventing estrus would be a different way to handle this problem.
DrO