Dystocia in sheep is usually managed by foetal delivery vaginally (VD), or caesarean section (CS). The aim of this study was to develop clinical prognostic models using the presenting features of ewes.

During the 2013–2014 lambing season, a prospective cohort study of all ewes (n = 429) and lambs (n = 700) presented to a UK practice was performed. Logistic regression methods were employed to investigate associations between presenting details of the ewe and the outcomes: immediate survival of ewes and lambs, and seven-day survival.

For the VD group, at presentation 203 ewes survived (94.0 %); and of the 164 available for follow-up, 155 survived, representing 87.6 % of those initially presented where follow-up was possible. At presentation 211 lambs survived (56.9 %); and of the 162 available for follow-up, 144 survived, representing 44.7 % of those born.

For the CS group, at presentation, 205 ewes (99.0 %) survived; and of the 174 available for follow-up, 157 survived, representing 89.2 % of those initially presented, where follow-up was possible. At presentation 247 lambs (77.7 %) survived; and of the 215 available for follow-up, 179 survived, representing 62.6 % of those born.

Ewes and lambs have similar/improved chances of survival in first opinion practice compared to hospitalised populations.

绵羊难产通常通过胎儿阴道分娩 (VD) 或剖腹产 (CS) 进行管理。本研究的目的是利用母羊的表现特征开发临床预后模型。

在 2013-2014 产羔季节期间，对所有在英国实践中展示的母羊 ( n = 429) 和羔羊 ( n = 700) 进行了前瞻性队列研究。使用逻辑回归方法来研究呈现母羊细节与结果之间的关联：母羊和羔羊的即时存活率和 7 天存活率。

对于 VD 组，目前有 203 头母羊存活 (94.0 %)；在可供随访的 164 例患者中，155 例存活，占最初可能进行随访的患者的 87.6%。展示时有 211 只羔羊存活 (56.9 %)；在可供随访的 162 人中，144 人幸存下来，占出生人数的 44.7%。

对于 CS 组，目前有 205 头母羊 (99.0 %) 存活；在可供随访的 174 例患者中，157 例存活，占初始就诊者的 89.2%，可以进行随访。就诊时有 247 只羔羊 (77.7 %) 存活；在可供随访的 215 人中，179 人幸存下来，占出生人口的 62.6%。

与住院人群相比，母羊和羔羊在第一意见实践中具有相似/更高的生存机会。