Reproductive Performance of Friesian Holstein Dairy Cows in the First Lactation at the BBPTU-HPT Baturraden

Abstract

This study aimed to determine the reproductive performance of Friesian Holstein dairy cows during their first lactation through the parameters of days open, Service Per Conception, and calving interval at BBPTU-HPT Baturraden, Banyumas Regency, Central Java. This study was conducted in February 2026 using a census method, covering the entire population of first-lactation Friesian Holstein cows in 2022, 2023, and 2024. The data used were secondary data obtained from livestock reproduction records, including livestock identification numbers, date of birth, date of first mating, gestation length, calving date, S/C, Days Open, and calving interval. The data was analyzed descriptively using minimum, maximum, mean, standard deviation, and coefficient of variation, and then compared with ideal standard values. The research results showed that the service per conception rate was 1.52 ± 0.5 times, the days open was 171,9 ± 67.1 days, and the calving interval was 14.7 ± 2.3 month. The coefficient of variation values indicated low to high variability. Based on the result at the study, it can be concluded that the service per conception value generally met the ideal standards, whereas the days open and calving interval values had not yet reached the ideal standards.