THE RELATIONSHIP BETWEEN SEMEN CHARACTE-RISTICS AND COLOUR DOPPLER ULTRA- SOUND MEASURES OF TESTICULAR BLOOD FLOW IN BUCKS

Document Type : Original Article

Author

Theriogenology Dept., Fac. Vet. Med., Tanta University (Kafr El-Sheikh Branch)

Abstract

The present study was carried out to evaluate the potential use of colour Doppler ultrasound to measure blood flow to the buck testis and to establish reference values for Doppler measures of blood flow in the testicular artery of the buck. Testes from both young and adult bucks were examined using a pulsed wave colour Doppler ultrasound with a linear array(5 MHz)transducer.Resistance index (RI),pulsatility index (PI) and systolic diastolic ratio (S/D)of the testicular artery were measured at the level of spermatic cord.Semen samples were collected from the two groups of buck once weekly.Semen characteristics were comparedin the two groups,as well as the correlations between semen characteristics, age and blood flow measures were determined. Blood flow measures were similar for left and right testes. Resistance index was significantly lower (P<0.05) in young than in adult bucks. Highly significant (P < 0.01) correlations were recorded between semen char-acteristics and blood flow measures (RI, PI and S/D) in bucks.

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