Vaccination is also key. “With replacement heifers, we really need to protect them from reproductive disease,” said Dr. David Shirbroun of Boehringer Ingelheim. Diseases like bovine viral diarrhea virus (BVDV), infectious bovine rhinotracheitis, and leptospirosis can cause infertility and embryonic loss.
Dr. Shirbroun recommends a five-way viral vaccine, such as EXPRESS FP, which includes the Singer strain proven to prevent persistently infected (PI) calves.
Parasite control is another crucial step. “Keeping parasites in check helps heifers fully utilize nutrition and reach reproductive milestones,” said Dr. Shirbroun. He advises using an extended release dewormer like LONGRANGE [eprinomectin] for long grazing periods to maintain gut health and efficiency.
Finally, herd development is a long-term process that begins before conception. Managing cow health, nutrition, and disease prevention ensures heifers reach full reproductive potential. “When done correctly,” noted Dr. Shirbroun, “heifer development is about three years—from conception to first calving.”