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Parity is one of the important factors affecting reproductive efficiency in raising beef cattle. The aim of this study was to determine the effect of parity on the reproductive performance of Bali cattle at different maintenance systems as a basis for building breeding cattle businesses in Field Station of Sekolah Peternakan Rakyat (SLSPR). Four hundred and seven records of reproductive performance of Bali cattle were obtained from twelve villages in Sungai Lilin District. Survey and observation were done on September, 2019. Data were analyzed using statistical and descriptive methods. The data were obtained from determined parameters including: calving interval (CI), days open (DO), and service per conception (S/C) of Bali cattle that are kept in intensive, semi intensive and extensive systems. The results showed that parity significantly affected the calving interval (CI), days open (DO) and service per conception (S/C) of Bali cattle that were kept in a semi intensive system. The calving interval (CI) was significantly higher in the second parity (15.46±3.42 months) compared with that of the first and third parity (15.23±3.46 and 13.69±2.15 month, respectively). Days open (DO) also showed significantly higher in the second parity (178.0±102.7 days) than the first and third parity (170.9±104.0 and 124.9±64.70 days, respectively). Furthermore, service per conception (S/C) was significantly higher in the second parity (8.52±5.59) compared to the first and third parity (8.30±5.19 and 5.56 ±3.88, respectively). Results obtained can be used as a basis for improving maintenance management to start establishing a collective breeding cattle industry in Field Station of Sekolah Peternakan Rakyat (SLSPR), Sungai Lilin District.

Effect of parity on the reproductive performance of Bali cattle at different maintenance systems in Field Station of Sekolah Peternakan Rakyat