By Sandy Johnson, extension beef specialist
We just finished preg checking some replacement heifers from a project conducted earlier this spring. The heifers were all artificially inseminated (AI) at a single fixed-time. Natural service sires were turned in 10 days after AI and removed 20 days later. This short breeding season was used for a number of reasons but most importantly so that there would be no late calving replacement females. The staging of this ultrasound examination was such that we had pregnancies at either 64 days or 54 to 34 days. Differentiating these stages of pregnancy with ultrasound was relatively easy and the information obtained was very powerful. The open heifers were sorted off and hauled to the feedlot that day. Continue reading “Tally Time – Get more value from pregnancy diagnosis”
