“Are 60 Percent Calving in First 21 Days?” NDSU Agriculture Communication (April 2014) April 17th, 2014 News A cow should cycle within 80 days of calving and maintain an average calving interval of 365 days. Are yours? Read More Share ThisTweetSharePlus oneShareEmail Related Posts Follow ESTROTECT on Facebook & Twitter Get social with ESTROTECT™ Heat Detectors! Like us on our Facebook fan page and follow… Breeding – The Art of Heat Detection (Veterinary Advantage; April 2016) Timely heat detection, breeding can pay dividends for producers. Before cattle producers can load out… ESTROTECT Honors the Life of Stan Lock, an AI Industry Pioneer Sunday morning the AI Industry lost a real pioneer. Stan Lock was a real cowman that understood the science and practical aspects of breeding cattle by artificial insemination. Stan will be missed but his work will go on through his disciples.