Document Type : Review Article
1 Ph.D. Students of Animal Physiology, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
2 Professors, Department of Animal Science, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
3 Assistant professor, Department of Anatomical Sciences, Faculty of Medicine, University of Medical Sciences, Kermanshah, Iran
The bio-stimulation technique offers a potentially useful and practical way for reproductive performance in rams. Reports on how bio-stimulation affects sexual potency rams are scarce: Knowledge of how rams respond to bio-stimulation is useful for persons who involved in semen collection; "hand" (controlled) mating, and the administration of sexual performance evaluations. The reduction of the stimulus value of the ewes after several, or even after one mating, appears to be the major factor accounting for the temporary interruption of the sexual activity of the rams. Sexual stimulation provided a definite, clearly recognizable end point for establishing that a ram was sexually stimulated
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