Total parenteral nutrition with different ratios of fat/ XXXX at two energy levels: an animal study.

@entity1568 @entity535 @entity409 @entity1735 @entity35 @entity435
Different regimens of total parenteral nutrition were evaluated in 64 growing @entity35 , during a 10-day period. Thirty-two @entity35 were kept at a low energy regimen (270 kcal/kg body weight per day), and the remaining @entity35 were infused with a high energy solution (350 kcal/kg/day). At each energy level, four fat/ @entity1735 ( @entity435 ) nonprotein energy ratios were tested: 0% fat/100% @entity435 (no fat); 6% fat/94% @entity435 (low fat); 30% fat/70% @entity435 (medium fat); 60% fat/40% @entity435 (high fat). A daily supply of 0.9 g @entity1568 /kg of a well balanced @entity535 solution was administered to all @entity35 . Growth, @entity1568 balance, net @entity1568 utilization, and blood status were evaluated. Carcass, liver, and muscle composition were investigated with respect to protein, fat, and water content. @entity409 was similar between groups at the same energy level. At the higher energy level the fat deposition was increased. At the low energy level, @entity35 from no fat and low fat groups lost weight during the first 3 days of the experimental period. The medium fat groups showed the highest weight gain at each energy level. This suggests the importance of the presence of fat in total parenteral nutrition programs. During the last days of the experimental period, all @entity35 gained weight, and showed a positive @entity1568 balance. All groups given 350 kcal/kg/day gained weight more rapidly and showed a better @entity1568 balance and utilization than the corresponding group given 270 kcal/kg/day. This study emphasizes that a well-balanced proportion of energy and substrates is important.
