The Atwater energy equivalents of 16.7, 16.7 and 37.7 kJ/g of protein, carbohydrate and fat, respectively, are the standard values used to calculate the macronutrient intakes required to meet a person's metabolizable energy requirement. The aim of this study was to compare in older people the measured metabolizable energy intake (MEI(MEAS)) required to achieve and maintain stable body weights w...

Most nutrient models predict supply of metabolizable energy (ME) and metabolizable protein (MP); in lactation models, flow of nutrients are predicted from endogenous, microbial, and undegraded dietary sources. Nutrient requirements are usually predicted using factorial calculation of requirements for maintenance (adjusted for environmental and management considerations), growth, pregnancy, and ...

Three experiments were conducted to evaluate the effect of β-mannanase BM: supplementation on the performance, metabolizable energy, amino acid digestibility, and immune function of broilers. A total of 1,600 broilers were randomly distributed in a 4 × 2 factorial arrangement (4 nutritional levels × 0 or 500 g/ton BM), with 10 replicates and 20 broilers per pen. The same design was used in the ...

To observe the influence of intestinal microbes on energy metabolism, male ICR strain germ-free (GF) mice, gnotobiotic (GB) mice, produced from GF mice monocontaminated with Staphylococcus epidermidis (Staph.) at three weeks of age, and conventional (CV) mice were used. Metabolizable energy, heat production and net energy (gain) per mouse were measured for three weeks when the mice were given 5...