Veterinary Medical Center, University of Georgia, Athens, Georgia, USA.
Hofmann Neonatal Intensive Care Unit, College of Veterinary Medicine, University of Florida, Gainesville, Florida, USA.
Equine Vet J. 2019 Nov;51(6):716-719. doi: 10.1111/evj.13125. Epub 2019 May 15.
Limited information exists on the long-term outcome of foals that survive following hospitalisation for disease as a neonate. Significant financial investment is required to raise foals to racing age, therefore improved understanding of factors that affect long-term outcome and future athletic performance is important.
To analyse racing performance in Thoroughbred foals hospitalised as neonates, compared with their maternal siblings and to determine factors associated with failure to race and racing performance.
Retrospective cohort study.
Medical records of Thoroughbred foals admitted to a neonatal intensive care unit between 1982 and 2008 were reviewed. Surviving foals of registered mares were included. Data including the foal's primary and concurrent diseases were extracted from the medical record. Racing records for foals and maternal siblings were evaluated. Multivariable logistic regression was used to identify disorders associated with failure to race and decreased racing performance.
Two-hundred and sixty-nine of 454 previously hospitalised foals (59%) raced. Sixty-eight percent (269/394) of registered foals raced, compared with 79% (697/880) of registered siblings. Foals with prematurity/dysmaturity (P = 0.002) and those with orthopaedic disease (P = 0.007) were significantly less likely to race than their siblings. Premature/dysmature foals also had significantly fewer starts and wins and lower earnings than siblings. Foals with orthopaedic disorders had a lower percentage of wins, relative to their siblings. There was no significant association between racing performance and other disease categories.
Small sample size in some disease categories and retrospective nature of study.
Foals hospitalised due to prematurity/dysmaturity or orthopaedic disorders were less likely to race than their maternal siblings and those that did race had decreased performance.
存活下来的新生儿期患病住院的小马驹的长期预后信息有限。要将小马驹饲养到比赛年龄需要大量的资金投入，因此，了解影响长期预后和未来运动表现的因素非常重要。
分析在新生儿期住院的纯种马驹的比赛表现，并与它们的母系同胎驹进行比较，确定与未能参赛和比赛表现相关的因素。
回顾性队列研究。
回顾了 1982 年至 2008 年间入住新生儿重症监护病房的纯种马驹的病历。包括注册母马的幸存驹。从病历中提取了驹的主要疾病和并发疾病的数据。评估了驹和母系同胎驹的比赛记录。使用多变量逻辑回归来确定与未能参赛和比赛表现下降相关的疾病。
454 例先前住院的驹中有 269 例（59%）参赛。68%（269/394）的注册驹参赛，而 79%（697/880）的注册同胎驹参赛。与同胎驹相比，早产/发育不良的驹（P=0.002）和患有骨科疾病的驹（P=0.007）参赛的可能性显著较低。早产/发育不良的驹参赛的次数和获胜次数以及收入也明显低于同胎驹。患有骨科疾病的驹的获胜比例相对同胎驹较低。其他疾病类别与比赛表现之间无显著关联。
某些疾病类别的样本量小，以及研究的回顾性。
因早产/发育不良或骨科疾病住院的驹参赛的可能性低于其母系同胎驹，而参赛的驹表现也较差。
