Quick view CIDR Cattle Device Insert 10 Pack Compare MSRP: $215.00 CIDR cattle insert - improve your calving pattern with a CIDR program. Progesterone is given to cows and heifers as an implant. One form available in Australia is the CIDR Cattle Insert, which achieves synchrony by lengthening the oestrus cycle... Trustpilot Add to Cart Add to Cart