Calving Interval of Productive PC to Increase Cattle Population Growth: A Case Study At South Sulawesi, Indonesia

Abstract

This study aimed to determine the contribution of shortening the calving interval to the growth of the beef cattle population in Indonesia. It used panel data from the 2013–2016 time series and cross-sectional data from 24 districts in South Sulawesi. The variables observed were population growth (PG), productive cows (PC) which have the potential to give birth and calving interval (CI). The data were analyzed by regression of panel data using software-reviews 8. The results showed an average length of CI of 28.18 months. PC gave a positive contribution of 0.003% to PG but was not significant (p > 0.05), while CI contributed negatively to PG by -0.028% and was significantly (p < 0.05) for PG. A 1% increase in CI could decrease PG by 0.028%. On the contrary, any decreased or shortening by 1% of CI could raise PG by 0.028%. Without shortening CI, PG decrease. The shortening of the calving interval on the growth of the beef cattle population in Indonesia can be done by up to 45%, from 28.18 ±4.12 to 15.15 ±4.12 months and PG increased about 1.311% from 5.633% to 6.944%. The key to shortening CI is a change of maintenance system, from extensive to semi-intensive, and control of the mating process. Breeders should limit the length of the weaning period and maximize conceptions during the mating period.

Pertumbuhan Alami (Natural Increase) Sapi Potong Di Kecamatan Pangkalan Lada Kabupaten Kotawaringin Barat

“…Mulliniks et al (2020), menyatakan bahwa sapi dengan calf crop lebih kecil dari 50% adalah sapi dengan produktivitas rendah. Paly (2019), menyatakan bahwa salah satu faktor yang menyebabkan rendahnya calf crop adalah interval kelahiran yang panjang. Sedangkan Wiyatna et al (2012) menyatakan bahwa rendahnya calf crop disebabkan oleh pengolalaan reproduksi yang kurang optimal, jarak beranak yang cukup panjang dan tingkat kematian pedet yang relatif tinggi.…”