Effect of Bull Age on Fresh Semen Quality of Pasundan Cattle in Ciamis

Abstract

This study aimed to describe fresh semen quality in three Pasundan bulls aged 3, 5, and 6 years at the Regional Technical Implementation Unit for Beef Cattle Breeding and Artificial Insemination Development, Ciamis. A quantitative observational approach was applied to secondary semen-production records collected from September to November 2025. Three bulls, each representing one age, contributed nine ejaculate records, yielding 27 observations. Semen volume, sperm motility, and sperm concentration were evaluated. Because each age was represented by only one bull and the nine ejaculates were repeated measurements from the same individual, the data were analyzed descriptively using means and standard deviations. Mean semen volumes at 3, 5, and 6 years were 5.79±1.23, 5.61±1.92, and 10.29±2.11 ml, respectively. Corresponding sperm concentrations were 1,261.56±180.55, 1,298.33±207.63, and 1,025.56±233.47 ×10⁶/ml, while motility values were 74.93±5.52%, 72.58±4.90%, and 74.40±6.80%. Descriptively, the 6-year-old bull showed the greatest semen volume and the lowest sperm concentration, whereas motility values were similar in magnitude among the three bulls. These findings indicate that age may serve as supporting information in bull selection, but it should be interpreted together with semen-quality traits and individual variation because age effects cannot be separated from bull identity in the present design.