Why is my cow miscarrying after heat and not getting pregnant?

Cystic ovarian disease in cattle, dairy cattle in particular, will usually lead to an inability to become pregnant until resolved. The cysts on the ovaries lead to the product of hormones and chemicals that make it impossible to enter heat or carry out a pregnancy to term usually. There are two main ways that these can be treated. The most common method is with the administration of a GnRH (gonadotropin releasing hormone) drug. This will cause the release of LH (lutenizing hormone) and should ultimately result in the degradation of the cysts. Another method, much less utilized today, is manual rupture of the cysts. While this can be verified by touch by an experienced person, there is a risk of hemorrhage with this method.

She may have had an injury that happened during calving, inflammation, insect bites, hormonal problems. You should have a veterinarian examine her, as she will need a vaginal exam, he needs to check whether the uterus has involuted properly or has fluid in it or a mummified fietus (even if she gave birth to a calf two months ago), take her temperature and check her udder for mastitis. Her vulva looks like there is some inflammation or infection going on.

283 days is the typical gestation length for a cow, so if she is close to her due date and off her feed it may be that she is going into labor. You may notice strange behavior, swelling of the vulva, an increased amount of milk in her udders, and the beginning of discharge. However, if she seems in great distress, doesn't go into labor and produce a calf, or seems to be in labor and can't pass the calf, it would be best to seek veterinary care in person immediately as the calf may be stuck and need to be pulled, or there may be an underlying illness causing issue.

IT is possible your cow has mastitis. This is inflammation of the mammary gland. Mastitis can be mild or severe with a deep infection. Try to keep the teats as clean as possible. I would recommend trying to encourage the calf to nurse from the inflamed mammary gland or milk that teat often. IF the cows udder starts turning color, patient develops a fever or starts not feeling well I would recommend calling a vet for a good exam and possible antibiotics

There are many things that could cause infertility. You would need to get her to a veterinary reproductive specialist to get a diagnosis; they will let you know if it can be corrected. ( https://vcahospitals.com/know-your-pet/infertility-in-female-dogs ) If she cannot conceive you should have her sterilized to prevent further problems like pyometra and mammary (breast) cancer.

Yes, I would be a bit worried. She may have some retained placenta or a uterine tear from the dystocia. If either of those are the case, she could end up with a life-threatening bacterial infection. I suggest you get your vet out there to check her out. It is better to be safe than sorry in this instance. Best wishes.

There are many things that could be going wrong. She could have some kind of infection or an anatomic problem. She is also a bit on the older side especially for her breed. Even though the stud has aired puppies in the past his sperm quality may not be as good for various reasons. I’d recommend seeing a vet to start - your best bet would be to find someone who is particularly interested in reproduction in your area. They would probably recommend blood work after an exam and might recommend some infectious disease testing. When she is ready to go into heat they might recommend hormone testing to help determine the ideal time to breed.