SEVERAL star-rated sport horse stallions were added to the Irish Sport Horse studbook at the Horse Sport Ireland (HSI) inspections in Cavan this week. GBBS International’s Abba van de Vrombautshoeve Z, Eros van het Lindenhof Z, Ulrik van’t Merelsnest, plus their Verbier de Muze, owned in partnership with Joris de Brabander, had passed Stage 1 by Friday morning, as did Michael Pender’s Madgeslane Deise Vu.