SPECIAL STORY 64 FEED & ADDITIVE MAGAZINE April 2023 Overall, the growth performance (Figure 3) and health status of the neonates were improved, leading to a significant reduction in veterinary treatments and weaning age (-3 days). CONCLUSION The first months of the life of calves are critical for future productive life and nutritional management is key to limit the impact of early stresses on the digestive system and natural defenses of the animal. In addition to good management practices, using inovative yeast fractions such as YANG into milk replacer during the full pre-weaning period represents a profitable nutritional tool to help maintain calves in good health and reduce the costs of curative treatments, for optimal growth performance. References: 1. Abuelo A., C. Faith, A. Hanes, J. L. Brester. 2021. Impact of 2 Versus 1 Colostrum Meals on Failure of Transfer of Passive Immunity, Pre-Weaning Morbidity and Mortality, and Performance of Dairy Calves in a Large Dairy Herd Animals11(3), 782; 2. Buczinski S., D. Achard, E. Timsit. 2021. Effects of calfhood respiratory disease on health and performance of dairy cattle: A systematic review and meta-analysis. Journal of Dairy Science. 104(7):82148227. 3. Hulbert, L. E., & Moisá, S. J. 2016. Stress, immunity, and the management of calves. Journal of dairy science, 99(4), 3199-3216. 4. Urie N.J., E. Lombard , C.B. Shivley, C.A. Kopral, A.E. Adams, T.J. Earleywine, J.D. Olson, F.B. Garry. 2018. Preweaned heifer management on US dairy operations: Part V. Factors associated with morbidity and mortality in preweaned dairy heifer calves. Journal of Dairy Science 101(10):9229-9244. 5. Villot C., Kowalczuk-Vasilev E., Duniere L., Gauthier M., Chevaux E. 2022. Nutritional supplementation of a multi-strains yeast fraction improves health and increases beneficial gut microbiota of preweaned dairy calves. AH-35. Page 112 in Proc. (Vol 1) 31st World Buiatrics Congress 2022, Madrid, Spain. About Marie-Valentine Glica Marie-Valentine Glica is agronomist working for Lallemand Animal Nutrition since 2 years as global ruminant marketing manager. Marie-Valentine is in charge of marketing and communication for the feed additives range (trial valorization, on-farm services and training tools development,). She has previous experience in technico-marketing in healthcare for large and young ruminants. Figure 3. Average daily gain (ADG) showing significant improvement for YANG-fed calves during the first month of supplementation
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