eng Oriental Scientific Publishing Company Biosciences Biotechnology Research Asia 0973-1245 2016-02-05 4 2 777 780 6304 article K. Sathi Redd 1 Y. Hari Babu 2 M.K. Tandle 2 D. Linga Reddy 1 Department of Physics, UCS, Osmania University, Hyderabad - 500 007, (India) Veterinary College, Bider, Karnataka (India) Ultrasonic velocity (v), attenuation coefficient (a), density (r), post thaw-motility, sperm concentration (n) and optical density for various bull semen samples of Deoni, Killeri, Jersey, Sruti, Holstein Friesian (HF) and Murrah were measured at room temperature of about 301.15 K temperature. Ultrasonic velocity (v) studies were carried out at the frequency of 2MHz with PZT transducer of X-cut using ultrasonic Pulse Echo Overlap (PEO) technique on various bull semen samples. The density (r) of various bull semen samples were measured with 10ml specific gravity bottle, the sperm concentration (n) by Heamocytometer, optical density by photoelectric colorimeter and post-thaw motility by Phase-Contrast Microscope. It was observed that the ultrasonic velocity (v) was different for different bull semen samples and relative merits were discussed in the present study. https://www.biotech-asia.org/vol4no2/ultrasonic-studies-on-the-different-veterinary-samples/ Ultrasonic Velocity (v); Attenuation Coefficient (a); Sperm Concentration (n)