Melatonin administration enhances the reproductive capacity of young rams under a southern M editerranean environment

This study tested the effect of melatonin treatment, initiated in late F ebruary on reproductive traits of young rams. A total of 14 young B arbarine rams were used. Seven animals were treated with three melatonin subcutaneous implants ( M elatonin) on 28 F ebruary while the remaining rams remained untreated ( C ontrol). After 60 days of melatonin administration, scrotal circumference reached average values of 32.1 ± 1.54 and 29.5 ± 1.0 cm for M elatonin and C ontrol animals, respectively ( P