Melgaard Daniel Taasti, Korsgaard Trine Stokbro, Thoefner Martin Soendergaard, Petersen Morten Roenn, Pedersen Hanne Gervi
Hoersholm Equine Clinic, Kongevejen 124D, 3480 Fredensborg, Denmark.
DyrDoktor, Sjaellandsgade 20, 6400 Soenderborg, Denmark.
Animals (Basel). 2020 Jul 16;10(7):1210. doi: 10.3390/ani10071210.
Unwanted behaviour in mares is a commonly presenting problem to the veterinarian. This behaviour may range from the mare being uncooperative or aggressive when handled on the ground, kicking, bucking or rearing when ridden or being aggressive towards other horses. This purpose of the study was to evaluate whether bilateral ovariectomy in mares with unwanted behaviour improved the mare's behaviour and/or rideability from the owner's perspective. The mares were grouped and compared statistically based on their histological classification as having either "normal" or neoplastic ovaries. This study is a retrospective case series report of twenty-eight ovariectomized mares. A semi-quantitative value (1-10) pre- and post-ovariectomy for A) behaviour on ground/in stable and B) rideability was given, based on the owner's observations. The horses were grouped based on their histopathologic diagnosis as "Normal ovaries" or "Neoplasia". Following ovariectomy, rideability improved, with a score of ≥5 in 80% (8/10) of mares with normal ovaries and in 57% (8/14) of mares with ovarian neoplasm. A behavioural improvement of ≥5 was observed in 40% (4/10) of mares with normal ovaries, and in 43% (6/14) of mares with ovarian neoplasm. A significant difference was observed between the semi-quantitative value pre- and post-ovariectomy in both groups. No difference was observed in change in behaviour and rideability score between the group with normal ovaries and neoplastic ovaries. Mares with unwanted behaviour not obviously related to the oestrus cycle and to painful conditions may benefit from ovariectomy to alter their behaviour and rideability.
母马的不良行为是兽医临床上常见的问题。这种行为表现多样，包括在地面处理时不合作或具有攻击性、骑行时踢腿、尥蹶子或直立，以及对其他马匹具有攻击性。本研究的目的是从主人的角度评估对有不良行为的母马进行双侧卵巢切除是否能改善其行为和/或可骑乘性。根据组织学分类，将母马分为“正常”卵巢或肿瘤性卵巢两组，并进行统计学比较。本研究是一项对28匹接受卵巢切除的母马的回顾性病例系列报告。基于主人的观察，在卵巢切除术前和术后分别给出了A）地面/厩内行为和B）可骑乘性的半定量值（1 - 10分）。根据组织病理学诊断，将马匹分为“正常卵巢”或“肿瘤”两组。卵巢切除术后，可骑乘性有所改善，正常卵巢的母马中有80%（8/10）得分≥5分，卵巢肿瘤的母马中有57%（8/14）得分≥5分。正常卵巢的母马中有40%（4/10）行为改善≥5分，卵巢肿瘤的母马中有43%（6/14）行为改善≥5分。两组卵巢切除术前和术后的半定量值存在显著差异。正常卵巢组和肿瘤性卵巢组在行为和可骑乘性得分变化方面未观察到差异。有不良行为且与发情周期和疼痛状况无明显关联的母马可能会从卵巢切除术中获益，从而改变其行为和可骑乘性。
