[Linear and angular measures do not influence the type of march in Campeiro horses]

ABSTRACT The march is a natural gait of some breeds of horses, which results from coordinated movements, and is the characteristic gait of Campeiro horses. The objective of this study was to determine relationships between linear and angular measures with the type of march of the Campeiro racehorses. A total of 113 adult horses were evaluated and 12 linear and 11 angular measurements of each animal were performed. To obtain the linear measurements, we used a hypometer and a tape measure and for the angular measurements, an arthrogoniometer and podogoniometer. To evaluate and classify the gait the animals were mounted and filmed by lateral view. Of the 113 animals, 36 (32%) had an incomplete gait, 74 (65%) had a complete gait and three (3%) had a guinilha gait. Of the horses with complete gait, 20 (27%) presented batida quick march, 14 (19%) a central march and 40 (54%) a split march. Only the linear measure, the height of the rump, presented difference between the types of movements (P< 0.011). It can be concluded that the linear and angular measurements of the Campeiro equines present similar values between the march variations, demonstrating morphological equivalent regardless of the march category.

摘要：行进步态是部分马种通过协调运动形成的自然步态，同时也是坎佩罗马（Campeiro horse）的标志性步态。本研究旨在探究坎佩罗赛马的行进步态类型与线性、角度测量指标之间的关联。研究共纳入113匹成年马，对每匹受试动物完成12项线性测量与11项角度测量。其中，线性测量采用测杖与卷尺实施，角度测量则使用关节角度计（arthrogoniometer）与蹄部角度计（podogoniometer）。为评估并分类马匹步态，研究人员对处于骑乘状态的受试马进行侧位视角拍摄。在113匹受试马中，36匹（32%）表现为不完全行进步态，74匹（65%）表现为完全行进步态，剩余3匹（3%）表现为吉尼利亚步态（guinilha gait）。在表现为完全行进步态的马匹中，20匹（27%）呈现巴蒂达快步（batida quick march），14匹（19%）为中间型行进步态，40匹（54%）为分裂型行进步态。仅臀高这一项线性测量指标在不同步态类型间存在显著统计学差异（P<0.011）。综上，坎佩罗马的线性与角度测量指标在各类行进步态变异间数值相近，表明无论所属步态类别如何，其形态学特征均保持一致。