A recent University of Delaware study of early lactation dairy cows revealed improved immune response when treated with Novus International Inc.'s Mintrex chelated trace minerals. Cows fed Mintrex were able to generate an elevated antibody response to a pathogen, which better enabled them to fight infection, according to the study, which was published in the August edition of Journal of Dairy Science.


The trial was conducted at the university with the objective to compare performance, plasma and milk mineral levels, and to measure innate and adaptive immune function in early lactation cows fed copper, manganese and zinc by either inorganic trace minerals or Mintrex. Cows supplemented with the Novus product showed a more robust antibody response to the model vaccination, according to the study. They also showed numerically increased neutrophil phagocytosis, which means the animals' white blood cells were better able to ingest bacterial pathogens. Additionally, increased levels of copper were seen in milk concentrations of cows fed Mintrex, demonstrating a higher bioavailability than inorganic minerals.