A study was conducted to evaluate the effect of silage feeding as replacement of green on seminal attributes in fresh and frozen thaw semen. During the experiment 18 bucks of similar age, weight and semen quality maintained in individual pen at semen production station, DUVASU were selected for experiment. The animal were divided into 3 groups each comprising 6 bucks. The bucks in control group were fed with complete green, group II with green and silage and in group III the green was completely replaced by silage. The animal under the trial were maintained in individual pan through experiment period of 90 days. The semen was collected from each buck twice a week using artificial vagina. A total of six ejaculate were collected from each buck. The semen collected from buck of each group was pooled to minimize individual variation. The pooled semen was evaluated and later diluted with Tris- glycerol-egg yolk extender, equilibrate and subjected to freezing. The frozen semen was later evaluated for post thaw semen quality. The evaluation of result exhibited no significant difference in control group feed with green when compared to the test group with green and silage and silage alone. The parameters recorded for the motility, path velocity and kinematic character (curvilinear velocity (VCL, µm/sec) (average path velocity (VAP, µm/sec), straight line velocity (VSL, µm/sec), Linearity (Lin%), Straightness (Str %), beat cross frequency (BCF %) and maximum amplitude-lateral head displacement (ALH, µm) were well within the normal range with no significant difference. So, it may be concluded that replacement of green with silage do not have any negative effect on semen quality of breeding bucks maintained under intensive feeding.