S. A. Mahmood, Ijaz, A.*, N. Ahmad**, H. Rehman*, H. Zaneb*** and U. Faroo
Semen Production Unit Karaniwala, Bahawalpur, L&DD Punjab Pakistan
*Department of Physiology, University of Veterinary and Animal Sciences, Lahore, Pakistan.
**Department of Theriogenology, University of Agriculture, Faisalabad, Pakistan.
***Department of Anatomy and Histology, University of Veterinary and Animal Sciences, Lahore, Pakistan.
****University College of Veterinary and Animal Sciences, The Islamia University of Bahawalpur, Pakistan