Biometria e locomo??o de equinos da ra?a Brasileiro de Hipismo

• Autor(a) principal: Andrade, Agnaldo Machado de
• Data de Publicação: 2014
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UFRRJ
• Texto Completo: https://tede.ufrrj.br/jspui/handle/jspui/2121
• topic: Kinematics; Measurements; Transitions; Cinem?tica; Mensura??es; Transi??es; Produ??o Animal

The aim of this study was to analyze horses? morphological traits and kinematics of pace, trot and gallop movements, as well as, upward and downward transitions on a high speed treadmill in horses without riders and mounted on a sand track. Thirteen Brasilian Sport Horses horses were used, 12 females and 1 castrated male with 9.0?2.8 years old mean age and 472.5?34.2 Kg mean weight, from the Army Cavalry School (EsEqEx). Linear, angular and perimeter measurements were performed with horses at forced statio. The animals were filmed at a standardized environment on the treadmill with black background and spotlights lighting. High-speed treadmill (Sahinco?) and sand track covered with flat and smooth floor were used. The images were obtained and processed by Simi Reality Motion Systems? and filmed by PiA640 Basler camera. The experiment was carried out in a completely randomized design with two treatments (horses on a high speed treadmill and mounted horses on a sand track) in paired data and 13 replications (animals). The results were submitted to variance analysis and means were compared by paired t test (P<0.05). At the day of filming, the animal performed a war up for 10 minutes at walking, trotting and galloping speeds. On the track, horses were mounted by three experienced riding instructors. Horses were classified as medium shaped and hypermetric, being the mean values for IC and IDT 0.87 and 0.11, respectively. In kinematics analysis, the following variables studied were stride length, speed pace, support time, sleep time and members foot prints on the left and right sides. In the standing-pace course just suspension time and right side foot prints presented difference (p<0.05) with the highest mean values on treadmill of 0.39s and -0.22cm (retro foot prints). In the meeting step on the treadmill analysis differences were observed (p<0.05) in stride length, support time, sleep time and members foot prints on left and right sides with the highest mean values from treadmill analysis when comparing to the sand track. In the elongated pace course, treadmill analysis presented the highest mean values for stride length and pace speed 2.1m and 1.98m/s while sand track analysis presented the highest values for support time and members foot prints on the left and right sides. In upward transitions, the same variables were significative (p<0.05) for treadmill analysis, speed pace, sleep time and members foot prints on the left and right sides, however, on two transitions, support time was higher (p<0.05) for sand track analysis. In the downward transition from gallop to trot lower (p<0.05) support time and higher suspension time were observed, being 0.21s and 0.38s, respectively. Stride length was similar (p<0.05) on horses evaluated on a treadmill and sand track, however, speed of transition was higher on treadmill being 4.03m/s in regarding to sand track 3.2m/s. In conclusion, regarding the morphometry, horses were framed on the saddle pattern for medium shape and hypermetric and; regarding kinematics, suspension time was the only variable presenting higher values for treadmill in all transitions, while stride length and speed pace presented the highest mean values for treadmill apart from for station-pace and pace-trot transitions, suggesting it may be related to influences undefined on this study.