Vol. 9, Issue 11, Part D (2025)

The present study was conducted on total 24 apparently healthy female Mehsana goats free from cardiovascular disease. The animals were divided into four age groups (Group-I to Group-IV) ranging from 6 to 24 months, at 6 months±2 weeks interval. Thoracic radiography was performed on right lateral (RL) recumbency.

The cardiac long axis (CLA) and cardiac short axis (CSA) values across the different age groups ranged from 10.16±0.09 to 12.29±0.16 cm and 5.94±0.16 to 7.13±0.07 cm, respectively. The vertebral heart size (VHS) values ranged from 8.45±0.08 to 8.93±0.12 vertebrae. The cardiac inclination angle, cardiosternal contact, thoracic height and thoracic inlet diameter (TID) values ranged from 19.93±0.99 to 26.80±0.95 degree; 4.44±0.29 to 5.10±0.25 cm; 14.73±0.19 to 18.13±0.18 cm and 7.35±0.18 to 9.33±0.30 cm, respectively from 6 to 24 months age. The tracheal diameter (TrD) and tracheal angle (TrA) values ranged from 1.18±0.03 to 1.31±0.03 cm and 20.08±0.89 to 23.53±0.64 degree. The values of T₄ length and T₃-T₅ length ranged from 1.74±0.06 to 2.11±0.02 cm and 5.64±0.08 to 6.35±0.05 cm. The caudal vena cava diameter (CVC) and aorta diameter (AO) values ranged from 1.11±0.05 to 1.52±0.03 cm and 1.29±0.06 to 1.59±0.07 cm, respectively. The values of cardiac long axis (CLA), cardiac short axis (CSA), vertebral heart size (VHS), cardiac inclination angle, thoracic height, thoracic inlet diameter (TID), caudal vena cava (CVC), aorta (AO) diameter, T₄ length and T₃-T₅ length exhibited significant variation across different age groups. While, the values of tracheal diameter (TrD), tracheal angle (TrA) and spino-phrenic angle did not show significant difference across age groups. The study established baseline reference data of cardiothoracic parameters for Mehsana goats across different age groups, useful for clinical diagnosis and research.