Brenner, Makayla A.Marques, Rodrigo S.Posbergh, Christian J.Zezeski, Abigail L.Geary, Thomas W.McCoski, Sarah R.2025-02-172025-02-172025-01-24Brenner, M.A.; Marques, R.S.; Posbergh, C.J.; Zezeski, A.L.; Geary, T.W.; McCoski, S.R. Maternal Injectable Mineral Administration Effects on Calf Growth and Reproductive Parameters. Animals 2025, 15, 330.https://hdl.handle.net/10919/124596Limited trace mineral research has focused on the impacts of maternal trace mineral supplementation on offspring fertility. We hypothesized that maternal injectable mineral (INJ) administration during mid/late gestation would improve overall growth and reproductive parameters in offspring. Two-hundred and seventy-eight cows were enrolled in the study and blocked by body weight, parity, and day (d) of gestation, and randomly assigned to a treatment group: a group (MM, <i>n</i> = 138) that received a single INJ (Cu = 15 mg/mL, Mn = 10 mg/mL, Se = 5 mg/mL, and Zn = 60 mg/mL; Axiota, Ft. Collins, CO, USA) or control group (CON, <i>n</i> = 138), which did not. Following calving, adjusted birth weight and weaning weights were recorded. A subset of bulls was developed until one year of age (CON, <i>n</i> = 18; MM, <i>n</i> = 14) when two semen ejaculates were collected for sperm quality. Mineral injection calves were heavier at birth than CON (<i>p</i> = 0.05). A treatment by parity interaction was observed for an increase in progressive motility in MM bulls than CON (<i>p</i> = 0.10). Injectable mineral administration to the pregnant multiparous cow improved sperm progressive motility in bulls, but no improvements were observed when assessed via flow cytometry.application/pdfenCreative Commons Attribution 4.0 InternationalArticle - Refereed2025-02-12https://doi.org/10.3390/ani15030330