ABSTRACT
One of the breeding strategies to increase the population of Bali cattle is through an AI program using frozen semen produced by superior Bali bulls. This research is a preliminary study examining the influence of age and individual factors on semen quality and field fertility in Bali bulls. The results of this study are expected to be the basis for further research, especially the molecular aspects that affect semen quality and fertility in Bali bulls. This study evaluated semen quality and field fertility data from eight Bali bulls. Data were analyzed based on individual factors and grouped by age (<10 years and >10 years). There were significant differences between individuals (P<0.05) and age (P<0.05) in semen quality and field fertility, except for fresh semen motility. PTM and RR were positively correlated with field fertility (P<0.01). Individual factors and age affect semen quality and field fertility in Bali bulls.
