Effect of biostimulation on sexual behaviour and semen production in Sahiwal bulls

The study was planned to overcome the poor libido problem through biostimulation on eight healthy and adult Sahiwal breeding bulls not donating semen at Artificial Breeding Research Centre, ICAR-NDRI, Karnal, Haryana. The bulls were first taken as control and their sexual behaviour was recorded by CCTV video camera. The bulls were biostimulated by applying estrous specific mucus on the rump region of dummy prior to semen collection. Out of 8 bulls, 6 bulls (75%) started donating good quality semen after application of estrous specific mucus. The 6 bulls produced quality semen having optimum ejaculate volume, mass activity, initial progressive motility, concentration, pH, non eosinophilic spermatozoa count, total morphological abnormality, HOST, acrosomal integrity, SYBR-14PI and CMA3. There was no significant difference observed in semen quality and sexual behaviour between cervical mucus and synthetic nasal spray treated groups. All sexual behaviour parameters significantly improved in both the treatment group as compared to control. Thus biostimulation by cervical mucus is effective for quality semen production besides better sexual performance of bulls.