Electroejaculation and seminal parameters in bonnet monkeys (Macaca radiata)

In the present study, our experience in the collection of semen from adult bonnet monkeys and some of the characteristics of semen are reported. Semen samples were collected by penile stimulation every 15 days over a period of 3 years. The penile method of ejaculation was more consistent with an increased volume of semen. A distinct sesonality in the sperm count of the bonnet monkey was observed. Sperm counts were high during the months of August to October and started declining from November onwards. The sperm counts were significantly (P < 0.05) higher during the mid and post-monsoon (July to November) periods than the pre- and early monsoon (March to June) periods.