• Early pregnancy diagnosis in alpaca (Lama pacos) and llama (Lama glama) by ultrasound 

      Parraguez Gambo, Víctor; Cortéz, Sandra; Gazitúa, Francisca; Ferrando Ratto, Germán; MacNiven Rengifo, Verónica; Raggi Saini, Luis (1997)
      An ultrasonography study of early pregnancy diagnosis was carried out in 19 alpacas and 12 llamas, after controlled matings. The aim was to determine the earliest gestational age at which pregnancy diagnosis by transrectal ...