1. Peel, DS (2018) Beef cow herd dynamics returning to normal. COW/CALF CORNER-The Newsletter Oklahoma Cooperative Extension Service, November 26. http://agecon.okstate.edu/livestock/files/COW%2011-26-18.pdf.
2. National Animal Health Monitoring System (NAHMS) (2009) Vaccination of cattle and calves on U.S. beef cow-calf operations. Info Sheet, Center for Epidemiology and Animal Health (CEAH), Veterinary Services, Animal and Plant Health Inspection Service (APHIS), U.S. Department of Agriculture (USDA). https://www.aphis.usda.gov/animal_health/nahms/beefcowcalf/downloads/beef0708/Beef0708_is_GenVacc_1.pdf.
3. Current situation and future trends for beef production in the United States of America — A review
4. A profile of cattle feeding: beyond the averages;Stehle;Western Economic Forum,2018
5. Peel, DS (2020) Enhanced BVDv control would benefit the cattle industry. Western Livestock Journal, June 25, 2018 Updated August 28, 2020. https://www.wlj.net/top_headlines/enhanced-bvdv-control-would-benefit-the-cattle-industry/article_f1de708e-68d3-11e8-ab62-6744902058e7.html.