Quistes foliculares en vacas posparto y su evolución con tratamiento de GnRH Y PGF2α

abstract introduction. reproduction data were retrospectively in a period of about 18 months, in five dairy herds from san pedro de los milagros, antioquia, with a population of 950 cows. objective. to nalyze the treatment's evolution in cows with follicular cysts. methodology. the cows were treated with a double dose of gnrh and pgf2α after 14 days. if the cyst persisted, the treatment was performed again, twice. statistic analysis. the data were analyzed by the use of the sas software with an anova, considering all the data with p<0,05 as significant. results. a 8,9% frequency of cysts in late postpartum occurrence was found. the percentage of cows that had this problem solved after the first treatment was 74,1%, with an average of 87,3% days of postpartum diagnose; the second 10,5%, with an average of 141,8 days and 3,5%; the third, with 189,3 days after the diagnose. the percentage of discarded cows was 11,8%. conclusions. this retrospective analysis in five dairy herds shows that follicular cysts appear with a relative frequency in late postpartum, but they can be effectively cured if diagnosed during the first 90 days. also, the treatment performed after finding the follicular cyst in a period of 80-90 days postpartum, is effective to solve 74,12% of the cases, with a pregnancy rate of 70,5%.