Discipline: Diagnostic Imaging
The Philippine native sheep has potential as an alternative livestock resource and as a model for cardiac disorders. To establish baseline echocardiographic parameters for use in disease diagnosis and investigation of cardiovascular disorders, 43 apparently healthy Philippine sheep, 18 male and 25 female, were utilized. The animals were grouped by age into <1 year old, 1-2 years old and >2 years old. The females were further classified into pregnant and non-pregnant, lactating and non-lactating. The heart was examined on the right thorax using an ultrasound machine equipped with a 5.0 MHz micro-convex scanner. The cardiac structures were identified using B-mode and measurements were made using M-mode echocardiography. Significant differences in several parameters were observed between male and female Philippine native sheep and among different ages in both male and female animals. Differences were also observed between lactating and non-lactating and between pregnant and non-pregnant Philippine sheep. High correlations were found between most echocardiographic parameters and body weight in both male and female Philippine sheep. The echocardiographic values obtained in the study can be helpful in disease diagnosis and for utilizing the Philippine native sheep as a model for cardiac disorders considering sex, age and status of lactation and pregnancy.