Reproductive performance of dairy cows resynchronized after pregnancy diagnosis at 31 (±3 days) after artificial insemination (AI) compared with resynchronization at 31 (±3 days) after AI with pregnancy diagnosis at 38 (±3 days) after AI. - Pereira RV; Caixeta LS; Giordano JO; Guard CL; Bicalho RC (Journal of dairy science, 2013)