Received: 16 March 2022
Accepted: 9 November 2022
First Online: 21 November 2022
: The guidelines contained in the directive 2010/63/EU of the European Parliament and of the Council of 22 September 2010 on the protection of animals used for scientific purposes are respected in our study. All methods were carried out in accordance with Polish veterinary regulations (Dz. U. z 2004 r. Nr 11, poz. 95), and this clinical observation was approved by Wielkopolska Veterinary Chamber (no. of decision 332/2022). All procedures performed on these mares were approved by the owners and did not go beyond the routine veterinarian procedures performed on mares introduced to AI and management of early pregnancy.
: Not applicable.
: The authors have no conflict of interest to declare.