Testis volume (A) and gonadosomatic index (%) (B) after 2, 4, 6, 8, 10 and 12 days of alone kisspeptin treatment (10ρg, 1ηg, 1µg doses). No significant effect was observed at any of the treatment doses on testis volume and gonadosomatic index (%). Values are expressed as mean ± SE (n=7).