The  objective  of  this  stduy was   to evaluate the effects of ME levels   in the diet on feed intake, milk production and weight loss of sows; and on preweaning performance, diarrhoea proportion of the piglets. A total of 28 sows were arranged  in a randomized complete block design with  seven  block of four  treatments .  The animals were fed on  four  diets  with  different  levels  of  metablisable  energy  (ME)  during  six  weeks:  ME3000,  ME3100,  ME3200 and  ME3300.  Experimental  time  included  o ne  week  prior  to  farrowing,  one  week  after  weaning  and  during  28 days of lactation. Results  showed  that,  average  daily  feed  intake  (ADFI)  before  farrowing  and  during  lactation  were  reduced