Ultrasound-guided fetal thorax compression to reduce post-fixation twins in the mare.

Background: Management of twin pregnancy after conceptus vesicle fixation in the horse is challenging because the reduction techniques described are either invasive, difficult to perform or associated with disappointing success rates.

Objectives: To evaluate the success of transrectal ultrasound-guided fetal thorax compression for reducing post-fixation twin pregnancy in mares.

Study Design: Retrospective clinical study.

Biological Functions and Clinical Applications of Anti-Müllerian Hormone in Stallions and Mares.

Anti-Müllerian hormone (AMH) plays a major role in sexual differentiation, Leydig cell differentiation, and folliculogenesis. In addition, AMH has clinical value in equine practice. In stallions, AMH can serve as an endocrine marker for equine cryptorchidism and as an immunohistochemical marker for Sertoli cell tumors.