Some Investigations on Cystic Ovarian Degeneration in Dairy Cows

Cystic ovarian disease (COD) is a common ovarian disorderdiagnosed in dairy cattle and is an important cause of reproductive failureand economic loss for the dairy industry and it has been accepted thatcows with COD were infertile until the condition resolved.The importance of studying cystic conditions lies in theconsequences they have for the dairy producer. As most cysts areanovulatory, they cause severe delays in the reproductive efficiency ofaffected animals, leading to decreased milk production over time. Thisinevitably can affect the bottom line and cause the dairy producer to losemoney.The objectives of this study were:1- To evaluate different therapeutic strategies of COD treatment usingterms of the reproductive parameters as estrus detection rate, intervalfrom treatment to first estrus, pregnancy rate after first service, returnrate, pregnancy rate after second service and total pregnancy rate by 3different treatment methods.2- To evaluate the reproductive efficiency of cystic cows after diagnosisand treatment according to days in milk (DIM).3- To measure the level of progesterone at the beginning and at the endof treatment.A total of 85 Holstein dairy cows suffering from cystic ovarianfollicles were divided into 4 groups based on the type of treatment asfollowing:Group 1 (Control): this group included 10 cystic Holstein dairy cowsleft without treatment.