Simulators, Science and Sires: Building Better Herds

In this episode of The Maine Farmcast, Dr. Colt Knight and Dr. Glenda Pereira co-host a deep dive into artificial insemination (AI), the original AI that has been revolutionizing livestock genetics for decades. They discuss the inspiration behind UMaine Extension’s new hands-on AI training program, funded by the Mitchell Center and supported by partners including the Maine Beef Producers Association and the National Pork Board. Listeners learn how simulators and practical demonstrations are helping producers master breeding techniques for cattle and swine while tackling real-world challenges like biosecurity, timing, and estrus detection.The conversation moves from the science of reproductive physiology to the art of precision timing, exploring hormone cycles, synchronization protocols, and the technology driving genetic gain. From dairy net merit values to crossbreeding for hybrid vigor, Knight and Pereira unpack how Maine’s livestock producers can improve herd quality and profitability through smart breeding decisions. They also preview the upcoming Maine Cattlemen’s College (December 6, 2025), where participants can gain firsthand AI experience with UMaine’s simulators and reproductive tract models. Whether you’re a seasoned breeder or just AI curious, this episode brings the classroom and the barnyard together to show how genetics, education, and innovation are shaping Maine’s agricultural future.If you are interested in attending the Maine Cattlemen’s College Artificial Insemination training, please contact Melissa Babcock, [email protected], to be added to the waitlist or if you are interested in attending future AI workshops. The next in-person workshop after this podcast episode release will be offered on December 6, 2025, in Augusta, Maine.The University of Maine System (the System) is an equal opportunity institution committed to fostering a nondiscriminatory environment and complying with all applicable nondiscrimination laws. Consistent with State and Federal law, the System does not discriminate on the basis of race, color, religion, sex, sexual orientation, transgender status, gender, gender identity or expression, ethnicity, national origin, citizenship status, familial status, ancestry, age, disability (physical or mental), genetic information, pregnancy, or veteran or military status in any aspect of its education, programs and activities, and employment. The System provides reasonable accommodations to qualified individuals with disabilities upon request. If you believe you have experienced discrimination or harassment, you are encouraged to contact the System Office of Equal Opportunity and Title IX Services at 5713 Chadbourne Hall, Room 412, Orono, ME 04469-5713, by calling 207.581.1226, or via TTY at 711 (Maine Relay System). For more information about Title IX or to file a complaint, please contact the UMS Title IX Coordinator at www.maine.edu/title-ix/.