Foram sacrificados três bezerros submetidos a dietas com di.. ferentes proporções de concentrados: feno (75:25; 67:33 e 60:40), e mais um bezerro alimentado com leite apenas. Após o sacrifício, notou-se maior desenvolvimento dos proventriculos dos animais em dietas com alimentos sólidos.

Three crossbred (European vs. Zebu) male calves were fed rations containing respectively the following proportions of concentrate mixture to perennial soybean hay: 75 to 25; 67 to 33; 60 to 40. Another calf received whole milk as the only feed and was considered as test animal. All of them were killed at about four months old. Greater development of the proventriculi or oesophageal sacculations were observed on those calves fed solid rations.