Post-treatment sequential ultrasound imaging of follicular cyst in a crossbred dairy cow

Abstract

Several studies in dairy cattle have investigated the final outcome of different treatment regimens in follicular cyst condition. However, sequential monitoring of the response of follicular cysts to these treatments is rather scanty. In this paper, we present the response of a large follicular cyst in a pluriparous crossbred dairy cow with prolonged conception failure to human chorionic gonadotropin, hCG (3,000 IU; day 0) and cloprostenol (500 lg; day 9) treatment. Using transrectal ultrasonography (USG), reproductive tract was imaged daily beginning day 0 until day 11. The follicular cyst showed a consistent regression to a very small anechoic area on day 7 and was undetectable thereafter. Concurrently, there was development of a new dominant follicle that was first detected on day 4 and showed progressive growth to preovulatory stage. The cow was inseminated and ovulation occurred, as diagnosed by the presence of a corpus luteum (CL) 7 days later, but conception did not occur. The animal was re-inseminated after estrus detection in the estrous cycle that immediately followed. Pregnancy diagnosis was performed on 30 and 60 days post-insemination (DPI) and the cow was confirmed to be pregnant. This paper underscores the importance of diagnostic ultrasound in veterinary medicine, especially in the management of reproductive problems.

Comparative Effects of Different Dosages of hCG on Follicular Development in Postpartum Dairy Cows With Cystic Ovarian Follicles

“…In the present study, a significant regression of the refractory COFs was observed in the hCG-3 group on day 7 compared to the other groups, indicating that the repeated administration of low dose hCG may be more effective in regressing COFs. A dose of 3,000 IU hCG resulted in the development and selection of new dominant follicles 4 days after treatment ( 11 ). The number of follicles < 4 mm in diameter increased after administration of hCG in groups hCG-2 and hCG-3.…”

“…Under field conditions, the diagnosis of COFs is based on behavioral abnormalities, transrectal examination of the genital tract including ultrasonography (US), and occasionally, blood progesterone (P4) profiles. Different treatment regimens involving gonadotropin releasing hormone (GnRH), human chorionic gonadotropin (hCG), prostaglandin F2α (PGF2α), and P4 have been used with variable ovarian responses and cure rates ( 2 , 10 , 11 ). Human chorionic gonadotropin has been used to successfully treat COFs non-responsive to GnRH ( 2 , 5 ).…”

The Efficacy of Bovine Pituitary Extract for Treating Ovarian Hypofunction Cases in Bali Cattle

“…Follicle diameter measurements are carried out with the help of an electronic capillary on ultrasonography by measuring the length of the diameter of the horizontal line and vertical edge of the follicle and then averaging it. This study measured follicular development to Graafian follicles (Khan et al 2015).…”