تجميد السائل المنوي لذكور الماعز الشامي

Abstract EN

This study was conducted at Agragof goat breeding station, IPA Agriculture Research Center over a period of six months from June 2001 to November 2001.

Seven Shami bucks aged 2.5-3.0 years were used in this experiment, in order to evaluate the semen of these bucks and try to freeze it. Results revealed that there were individual differences between bucks in the semen physical properties such as volume, individual motility, mass wave activity and concentration of sperm in the ejaculate.

The overall means of the mass wave activity, individual motility and the dead sperm after semen collection were (82.30 ± 0.95, 82.22±1.00 and 6.52 ± 0.09 %, respectively).

After the washing of spermatozoa, the mass activity and individual sperm motility decreased while the percentage of the dead sperm increased; the overall means were (69.09 ± 1.19, 68.03 ± 1.24 and 19.97 ± 1.99 %, respectively).

After thawing, the viability of sperms was continuously inactive for 4 hrs.

at maximum, and the overall means of the individual activity of sperms after thawing were (44.50±0.95, 22.91 ± 1.32 , 14.03 ± 2.08 % at 0 ,2 and 4 hrs., respectively). In conclusion, although the viability of sperms after thawing was not in a satisfied degree but the freezability of bucks semen achieved was successful in our study, and it needs more attention from researchers to improve it.