Colostrum by Mark Greentree the first milk secreted by mammals after giving birth. The colostrum is essential for newborn survival as they receive their immunity from their mother through passive transfer. Calves are born without an immune system. Related Articles: PodcastsNutrition Tools: Tom’s Questions for Herd Evaluation–Heifer GroupThe Nutritionist 2019 Van AmburghDr Mike Van Amburgh, professor at Cornell University, gave a talk that discussed some components, which he referred to as bioactive factors,The Nutritionist webinars–calf unitWe put a considerable amount of thought into topics and speakers for our global The Nutritionist series.The Nutritionist 2019 DrackleyIn the final presentation of The Nutritionist 2019, Jim Drackley talks about colostrum quality and managing wet-calf nutrition.