The aim of this study was to control sexual activity in 10 mature OuledDjellalrams ranging in age between3 and 9 years during the increasing daylight lengthperiod (time beforemating out of the breeding season). The parameters studied were weight, body condition scores, testicular morphometric characteristics (scrotal circumference, testicular length and diameter as well as the epididymal tail diameter) semen and spermatozoa characteristics (sperm volume and appearance, mass and individual progressive motilities, concentration, percentages of live and abnormal sperm). A battery-operated ejaculator was the equipment employed for semen harvest. Live weights, testicular measurements and semen collection were performed fortnightly during three months (January, February and March). The results show stability of the different studied parameters, indicating a certain stability of the sexual activity in Ouled Djellal rams. The presence of spermatozoa, sperm quantity and quality show that sexual activity in Ouled Djellalrams decrease during the increasing of daylight length.
