EARLY WEANING OF HEIFERS UNDER UNFAVOURABLE CONDITIONS USE OF SEVERAL LEVELS OF ALFALFA HAY - RENTERIA JJ; BUTTERWORTH, MH (DEPTO. DE ZOOTECNIA, INSTITUTO TECNOLÓGICO Y ESTUDIOS SUPERIORES DE MONTERREY, SUCURSAL DE CORREOS J, MONTERREY N.L., MÉXICO, 1974)
Keywords: EARLY WEANING, HEIFERS, UNFAVOURABLE CONDITIONS, SEVERAL LEVELS, ALFALFA; MULTIDISCIPLINARIA; INGENIERIA AGRICOLA; RIEGO