this depend on the type of ovarian cyst: (1) luteal cysts stop the cycle (anestum) and usually accompanied with defect in other parts of the genital tract like pyometra, missing on one uterine horm, mummified fetus and others; (2) Theca cyst, usually multiple, the cow is usually nymphomanic, the follicle do not ovulate. It is the important form and usually accompanied with high milk production, laminitis, mastitis, and other diseased conditions.

Infertility  means temporary  loss of reproduction. The basic cause of ovarian cyst is hormonal insufficiencies. Therefore infertility depends on type of cyst. Follicular cyst are generally multiple and persist for shorter duration. But luteal cysts are usually single and persist for longer duration. Of course to the author, s experience both the cysts can be treated successfully with gonadotropins andprostaglandin 

Follicular cysts are generally over diagnosed in Vet practice with cows.  Mainly because a typical follicle wave lasts for 7-10 days and if you find a large follicle on an ovary today and go back and scan again in one week and find another large follicle on the same ovary then they are often incorrectly diagnosed as cystic.  The true incidence of follicle cysts in dairy cows is probably about 1-2% of cows.  They cause temporary infertility because while they are physiologically active (ie secreting oestradiol) they block subsequent follicle waves from emerging (negative effect on FSH).  However usually after 10-12 days or so they lose their physiological activity, and allow the next wave of follicles grow.  At that point the original cyst just takes time to morphologically disappear on the ovary.  The next follicle wave may be normal or may also become cystic.  In my opinion the reason they become cystic is that a follicle that becomes dominant acquires LH receptors in its granulosa layer around 9 mm.  However if the LH pulse frequency is increased, but not enough to drive ovulation (ie is intermediate between luteal and follicular LH pulse frequencies; LHPF), this stimulates the follicle to continue growing, but not ovulate.  Eg lame cows post partum before they resume cyclicity may have an increase in LH PF, but they cannot surge (inhibited by stress and pain of lameness) so eventually the follicle just continues growth as a cyst.

For luteal structures I think that persistent CL are a better term as they generally arise after ovulation, but generally because of uterine disease the PGF release cascade fails and you get persistent CL generally associated with uterine disease.

Sometimes the follicular cyst can luteinize because of the increased LHPF mentioned above, and these develop thin walled luteal structures with fluid contained inside - this would be basically ovulation failure.  Technically then these could be called luteal cysts or luteinized follicles.

Once you have luteal tissue present then the animal should respond to PGF treatment to cause regression of the structure and then they should resolve.

If there is a follicular cyst present then there are two treatment options either progesterone (CIDR or PRID) for 7-10 days to decrease LHPF, allowing that structure lose its physiological effects and a new follicle wave can emerge and then on device removal the animal should go into a follicular phase and ovulate.  Alternatively you can use GnRH to luteinize the follicular cyst (if it is still physiologically active) and follow up with PGF 7 days later.

I have a number of review papers on my profile that describe the pattern of resumption of ovulation in post partum cows - these patterns include normal early resumption (in dairy cows), delayed resumption with follicle wave turnover (some times in poor BCS or high NEB dairy cows and in beef cows nursing a calf), follicle cysts and ovulation followed by formation of persistent CL.

I totally agree with Mark A Crowe

cyst ovary consists of a cyst follicular cyst luteal and cyst corpus lutea, if follicular cyst clinical symptoms appear nimfomania (always appeared symptom estrus) mainly cattle in the tropics due to normal estrus every 21 days, if the cyst follicular will always estrus because the hormone FSH enough but the LH hormone deficiency always formed follicles so young but never ovulation due to LH deficiency, on palpation pererctal will be palpable smooth surface lenient ovary filled with fluid. Reviewed luteal cyst is usually a continuation of a follicular cyst that occurs in dairy cows with high milk production due to high hormone LTH, the young will happen luteinizing follicle so that the follicle is formed lutein cells, the clinical symptoms become anestrus cows for the production of progesterone are high. the cyst corpus lutea occurs in follicle de graff who have experienced normal ovulation, and formed a corpus lutea is normal, then the perkembanganya formed cavity in the middle filled with fluid, it is difficult to lisiskan by prostaglandin naturally in the body and the result is always the formation of progesterone so anestrus occurs, the ovary will perrectal palpation palpable bulge sized 2-5cm thick-walled round, and amid the cavity was filled with fluid. all sista generally due to hormonal influences gonadotrofin unbalanced

I have just looked at this thread again. It is NOT necessary for follicular cystic cows to display nymphomania behaviour. If a follicle cyst occurs in a heifer or cow that had been cycling and seen recent progesterone then they will show nymphomania behaviour. But if a follicle cyst occurs in a post partum cow that had not yet resumed cycling then that cyst will generally not be associated with any oestrous behaviour. So that follicle cyst despite high oestradiol concentrations is similar to a post partum first ovulation where in the absence of recent progesterone priming you get silent ovulation.

This is why in dairy cattle post partum when you do get follicle cysts early post partum the cows generally do not show nymphomanic behaviour.

An ovarian cyst is a fluid-filled sac within the ovary. Often they cause no symptoms. Occasionally they may produce bloating, lower abdominal pain, or lower back pain. The majority of cysts are harmless. If the cyst either breaks open or causes twisting of the ovary, it may cause severe pain. This may result in vomiting or feeling faint. Most ovarian cysts are related to ovulation, being either follicular cysts or corpus luteum cysts. Other types include cysts due to endometriosis, dermoid cysts, and cystadenomas. Many small cysts occur in both ovaries in polycystic ovarian syndrome. Pelvic inflammatory disease may also result in cysts.

Kind regards

This latest answer from Khalid above really relates to humans I think. Not dairy cows.

An ovarian cyst is a fluid-filled sac within the ovary. Often they cause no symptoms. Occasionally they may produce bloating, lower abdominal pain, or lower back pain. The majority of cysts are harmless. If the cyst either breaks open or causes twisting of the ovary, it may cause severe pain. This may result in vomiting or feeling faint.

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