Effects of pre and postnatal nutritional restriction on allometric growth of internal fat deposits in Santa Ines lambs were evaluated Sixty eight lambs were randomly alloted to three different nutritional restriction:prenatal nutritional restriction (PRER), postnatal nutritional restriction (POSR), and a control group without nutritional restriction. Lambs of each group were randomly sampled and slaughtered at birth and weighing 10, 15, 25, 35 and 45kg. Fat depositts (omental, mesenteric, perirenal, pelvic and inguinal) of slaughtered lambs were recorded. At birth fat deposits were small for animals from treatment RPRE. From 15 to 35kg of live weight the amount of fat was similar for animals from all groups but lambs from PRER group, with live body weight heavier than 35kg, showed higher fat deposits except for pelvic fat. Prenatal nutritional restriction increased increased the omental, mesenteric, perirenal, and pelvic fat deposits and postnatal restriction decreased the inguinal fat deposits. Lambs from all groups showed a positive heterogenic development (b>1).
lamb; allometric growth; fat growth; alimentary restriction
