Furuse M, Yokota H
Br Poult Sci. 1985 Jan;26(1):97-104. doi: 10.1080/00071668508416791.
The effect of the gut flora on chick growth and protein and energy utilisation at a marginal dietary energy level (calculated metabolisable energy value 11.7 MJ/kg) was determined with diets containing 227 or 293 g protein/kg. Germ-free (GF) and conventional (CV) chicks were reared for 10 d on the diets, and excreta were collected during the last 4 d. The chicks were killed and carcases and droppings were analysed for N and fat. The GF chicks grew significantly faster than the CV controls on both diets. The growth of CV chicks given the high protein diet was similar to that of GF chicks given the adequate protein diet. Protein and energy utilisation were significantly less for CV than for GF chicks on both diets. It was concluded that the energy requirement of CV chicks was greater than that of their GF counterparts, and that their poorer growth was due to utilisation of some dietary protein as an energy source.
在边际日粮能量水平（计算得出的代谢能值为11.7兆焦/千克）下，研究了肠道菌群对雏鸡生长以及蛋白质和能量利用的影响，所用日粮蛋白质含量分别为227克/千克或293克/千克。无菌（GF）雏鸡和常规（CV）雏鸡用这些日粮饲养10天，在最后4天收集排泄物。处死雏鸡后，对 carcasses（原文有误，推测为carcasses，意为 carcass，胴体）和粪便进行氮和脂肪分析。两种日粮下，GF雏鸡的生长速度均显著快于CV对照雏鸡。给予高蛋白日粮的CV雏鸡的生长情况与给予充足蛋白质日粮的GF雏鸡相似。两种日粮下，CV雏鸡的蛋白质和能量利用率均显著低于GF雏鸡。得出的结论是，CV雏鸡的能量需求高于其GF对应雏鸡，且其生长较差是由于将一些日粮蛋白质用作能量来源。
