Factores de riesgo y mecanismos fisiopatológicos asociados a la presentación del mal de altura en bovinos expuestos a altitudes elevadas

One of the main diseases that occurs due to the exposure of cows to altitudes above 2500 meters above sea level is altitude sickness. Despite the negative economic and productive impact caused by this disease, there is no indicator, in the research, that allows to know the tolerance of altitude sickness in cattle, before irreversible clinical symptoms occur, therefore, it is proposed to estimate a necessary indicator to prevent altitude sickness. The research was carried out at the Hacienda L&G FARM in the province of Pichincha, where the variables weights (kg), category, body condition (Cc), height at withers (cm), open days (DO), liters per lactation (milk 305) and venous pulse (Pv) were obtained as risk factors and, systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP), pulse rate (FP), oxygen saturation (spO2) and temperature (T) as pathophysiological mechanisms in cows that are exposed to high altitudes. For the correlation between the variables obtained, a Multiple Correspondence Analysis (MCA) was performed to identify the risk factors and pathophysiological mechanisms associated with altitude sickness. A correlation was found between weight, height at withers and milk production with the percentage of oxygen saturation, this correlation presented significant differences to the rest of the variables analyzed, concluding that the risk factors in sampled cattle are heavy cattle, tall, and with productions greater than 5000 liters of milk per lactation having more likely to present altitude sickness, due to the greater energy expenditure and difficulty breathing they have due to a high altitude. Regarding the measurement of the variables to find the pathophysiological mechanisms, DBP and MAP have a correlation of 0.81, concluding that animals with high values in DBP (>80 mmHg) and MAP (>90 mmHg) are pathophysiological mechanisms involved with the presentation of bad altitude in cattle exposed to high altitudes in the L&G FARM farm.

• Auteur principal: Quilumba Molina, Johana Estefania (author)
• Format: masterThesis
• Langue: spa
• Publié: 2023
• Sujets: ALTITUD; MAL DE ALTURA; HIPOXIA; CORRELACIÓN; VETERINARIA
• Accès en ligne: http://repositorio.utc.edu.ec/handle/27000/10930