Influence of category−heifers, primiparous and multiparous lactating cows−in a large-scale resynchronization fixed-time artificial insemination program - Marques, Márcio de Oliveira; Morotti, Fábio; Silva, Camila Bizarro da; Ribeiro Júnior, Mario; Silva, Rubens César Pinto da; Baruselli, Pietro Sampaio; Seneda, Marcelo Marcondes (Journal of Veterinary Science, 2015)