00632nam a2200181 a 450000100080000000500110000800800410001910000220006024501650008226000580024765000180030565300150032365300190033865300250035765300260038270000230040870000190043110442562021-09-10       1998    bl uuuu     u00u1 u    #d1 aALENCAR, M. M. de  aAge at first calving, calving weigth and productive performance of straightbred Nellore and crossbred Charolais x Nellore cows in Brazil.h[electronic resource]  aJournal of dairy science, v.81, n.1(supl), p.77c1998  aGado de Corte  aBeef catle  aCross breeding  aEficiencia produtiva  aProductive efficiency1 aOLIVEIRA, J. A. L.1 aALMEIDA, M. A.