January 16, 2025

Interpretive Summary: Effects of maternal Cu, Mn, and Zn supplementation from different sources on physiological and productive responses of cows and their offspring

Interpretive Summary: Effects of maternal Cu, Mn, and Zn supplementation from different sources on physiological and productive responses of cows and their offspring

By: Vinicius Alves Cruz, Rodrigo S Marques, Keenan Kvamme, Arnaldo Cintra Limede, Fernando Alerrandro Andrade Cidrini, Iorrano Andrade Cidrini, Keuven dos Santos Nascimento, Shea J Mackey, Reinaldo F Cooke, Chance Farmer, Jeff Heldt

Trace minerals like Zn, Cu, and Mn play essential roles in fetal development, particularly in the formation of the nervous, reproductive, and immune systems. However, their bioavailability might differ depending on the source offered to the animals. This study investigated the impacts of different sources of trace minerals (hydroxychloride [HDX] vs. organic-complexed [ORG] vs. sulfate [INR]) on maternal and offspring responses. Cows supplemented with HDX or ORG trace minerals during late gestation had enhanced body condition scores (BCSs) at weaning and improved BCS changes from calving to weaning compared with cows given INR minerals. This suggests a potential long-term benefit of using HDX or ORG trace minerals during late gestation. Interestingly, the mineral sources did not influence how much of the minerals were passed to the calves, as liver mineral levels were consistent across all groups. Additionally, no significant differences were observed in offspring outcomes, such as birth weight, growth rates, or health markers, regardless of the mineral source. In summary, while mineral supplementation during pregnancy is undeniably important, this study shows that different sources of trace minerals produced similar overall outcomes for both cows and calves from birth to finishing.

Read the full article in the Journal of Animal Science.