Increased accuracy of estrus prediction using ruminoreticular biocapsule sensors in Hanwoo (Bos taurus coreanae) cows

Visual estrus observation can only be confirmed at a rate of 50%–60%, which is lower than that obtained using biosensor. Thus, the use biosensors provides more opportunities for artificial insemination because it easier to confirm by visual observation. This study determines accuracy prediction ruminoreticular biosensor analyzing temperature during cycle and measuring changes in body activity. One hundred twenty-five Hanwoo cows (64 with ruminal test group 61 without control group) were studied. Ruminoreticular temperatures activities measured every 10 min. The first service used gonadotropin-releasing hormone (GnRH)-based fixed-time protocol groups. received based on made biosensor, according Before insemination, was maintained an average 38.95 ± 0.05°C 13 h (−21 −9 h), 0.73°C higher observed −48 (38.22 0.06°C). activity, indwelling 3-axis accelerometer, averaged 1502.57 27.35 approximately 21 from −4 −24 before showing 203 indexes activity hours (1299 9.72). Therefore, information communication techonology (ICT)-based highly effective reduce reproductive cost farm accurately detecting increasing confirmation cattle.