In the horse, only a small number of monozygotic twins and triplets have been reported commonly, outcome is poor. As in man, an association between occurrence use assisted reproductive technologies (ART) has suggested. mare, transfer vitro produced (IVP) embryos appears to increase incidence twinning (1.6%; 4/254) compared vivo (0%; 0/413) (Dijkstra et al. Equine Vet J. 2020; 52: 258-261). Due ...