
07/11/2025
UPCOMING AUGUST OPU for ICSI π¬
Dr. Nilson Ribas visited our team earlier this year in March for OPU procedures, and the result? 63 frozen embryos transferred with a 74.6% success rate π
Westhills EVS is very excited to welcome Dr. Nilson Ribas back to our reproduction department the first week of August and offer his service and expertise to our clients. This summer session is a great opportunity to freeze some embryos for use early next season or just get embryos from those difficult mares!
Dr. Ribas has received training at the largest ICSI/Cloning Laboratory in Brazil and over the years has performed hundreds of oocyte aspirations.
π€ What is OPU?
O**m Pick Up, also known as OPU or Transvaginal Follicle Aspiration, is the process where oocytes (eggs) are aspirated from the mares o***y. OPU is performed from donor mares via ultrasound guided trans-vaginal aspiration under standing sedation. Any oocytes obtained following the procedure are shipped to a lab for oocyte maturation, ICSI and embryo development and can then be transferred into the uterus of a recipient mare or frozen for future use!
π§Why OPU?
Common utilizations of OPU are in highly infertile mares with persistent problems preventing embryo production, in older mares, and in stallions with limited s***m availability or who are no longer available. It can also be a means to achieve multiple foals from the same mare in the same year, or to preserve breeding genetics for future use when the mare or stallion may not be available.
We are currently booking mares for the first week of August with limited space available. Please contact us as soon as possible if you would like to book in while Dr. Ribas is here, or simpy for more information!
π: 780-898-9267 | βοΈ: [email protected]