2013 - 2019年南非公开拍卖的纯种一岁马样本中内镜下喉返神经病变分级患病率

Endoscopic recurrent laryngeal neuropathy grade prevalence in a sample of thoroughbred yearlings at public auction in South Africa (2013-2019).

作者信息

Miller Sean M

机构信息

Summerveld Equine Hospital, Summerveld.

出版信息

J S Afr Vet Assoc. 2020 Apr 20;91(0):e1-e5. doi: 10.4102/jsava.v91i0.2013.

DOI:10.4102/jsava.v91i0.2013

PMID:32370531

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7203182/

Abstract

Endoscopy of thoroughbred (TB) yearlings at public auctions is common in South Africa. Laryngeal function (LF) is a common concern of buyers of young TBs. Cancellation of sale because of LF abnormalities is a concern for both the vendor and the buyer, with recurrent laryngeal neuropathy (RLN) being a common cause of sale cancellation. The aim of this descriptive study was to determine the prevalence of RLN at South African premier TB yearling sales. This study was designed as a retrospective descriptive analysis of upper respiratory tract (URT) endoscopic examinations to determine RLN grade, performed at two premier TB yearling sales in South Africa. Results of buyer-requested endoscopic examination from 2013 to 2019 were included. Results from the yearling sales were analysed for prevalence of RLN grade (using Rakestraw's 4-point system) and compared to similar previously published studies. For analysis of effects of gender on RLN grading, horses were grouped and Fisher's exact test was used to determine if there was a relationship between gender and grade. For comparison of the effects of age on grade, and sales year on grade, a Kruskal-Wallis test was conducted. A value of p 0.05 was considered significant. A total of 858 horses were examined out of 4149 offered for sale; there were 57.58% colts and 42.42% fillies (mean age of 18.1 months). The annual percentage for grade 1 was 84.04% ± 9.98%, for grade 2: 14.49% ± 10.69%, for grade 3: 0.71% ± 0.57% and for grade 4: 0.76% ± 0.94%. There were no other significant findings. The exclusive nature of the sale and the increasing proclivity for pre-sale scoping may have skewed the results. This study shows that RLN grade incidences in TB yearlings at public auctions in South Africa are as follows: grade 1: 84.04%, grade 2: 14.49%, grade 3: 0.71% and grade 4: 0.76%. The results were similar to that of an adult population of horses examined in South Africa in a previous study.

摘要

在南非，对参加公开拍卖的纯种一岁马进行内窥镜检查很常见。喉功能（LF）是年轻纯种马买家普遍关注的问题。因LF异常而取消拍卖对卖家和买家来说都是一个担忧，喉返神经麻痹（RLN）是导致拍卖取消的常见原因。这项描述性研究的目的是确定南非主要纯种一岁马拍卖会中RLN的患病率。本研究设计为对上呼吸道（URT）内窥镜检查进行回顾性描述性分析，以确定在南非两场主要纯种一岁马拍卖会中进行的RLN分级。纳入了2013年至2019年买家要求的内窥镜检查结果。分析一岁马拍卖会中RLN分级的患病率（使用拉克斯特劳的4分制），并与之前发表的类似研究进行比较。为了分析性别对RLN分级的影响，将马匹分组，并使用费舍尔精确检验来确定性别与分级之间是否存在关系。为了比较年龄对分级的影响以及销售年份对分级的影响，进行了克鲁斯卡尔 - 沃利斯检验。p值<0.05被认为具有统计学意义。在4149匹待售马匹中，共检查了858匹马；其中雄驹占57.58%，雌驹占42.42%（平均年龄18.1个月）。1级的年百分比为84.04%±9.98%，2级为14.49%±10.69%，3级为0.71%±0.57%，4级为0.76%±0.94%。没有其他显著发现。拍卖的排他性以及售前检查倾向的增加可能使结果产生偏差。本研究表明，南非公开拍卖的纯种一岁马中RLN分级的发生率如下：1级：84.04%，2级：14.49%，3级：0.71%，4级：0.76%。结果与南非之前一项针对成年马群的研究相似。