A simulation model to evaluate the economic consequences of insemination programs in dairy herds: timed artificial insemination and sex-sorted semen - Ojeda-Rojas, Oscar Alejandro; Gonella-Diaza, Angela Maria; Sá Filho, Manoel Francisco de; Nunes, Rubens; Gameiro, Augusto Hauber (Revista Brasileira de Zootecnia, 2018)