Dietary Metabolizable Energy Intake

Within season the factors studied were 1 type of diet which included 2 levels of me classified as either concentrate 3 04.

Dietary metabolizable energy intake. The metabolizable energy me of two diets that differed in their content of dietary fiber df from cereal products was measured in balance experiments in six human subjects. Metabolizable energy me is the net energy remaining after fecal and urinary energy loss and represents the energy available for growth or reproduction and for supporting metabolic processes such as work locomotion and respiration thermoregulation maintenance metabolism hif. Df intake was 19 7 g d with the low fiber diet and 48 3 g d with the high fiber diet. The effect of dietary metabolizable energy concentration upon the pre and post weaning performance of growing rabbits volume 36 issue 2 catherine butcher m.

Daily intake should be monitored. Had we estimated the energy intakes using the atwater general factors of 4 9 and 4 kcal g of carbohydrate fat and protein to calculate metabolizable energy based on the manufacture s label the average metabolizable energy intake would have been 3 8 kcal g and 3 9 kcal g dry weight of cr and c food compared to our measured values of 3 5 and. The purposes of our study in overweight adolescent boys and girls were 1 to assess the energy reporting bias of diet records against the referent of total energy expenditure tee and 2 to compare the methods of determining energy needs by using measured metabolizable energy intake mei and tee. The metabolizable energy me content and apparent digestibility of dietary fiber in human diets are difficult to assess.

A summer study and a winter study were conducted using an incomplete factorial structure in a complete randomized design. In ruminant nutrition metabolizable energy me is calculated from digestible energy de using a constant conversion factor of 0 82 but methane and urine energy losses vary across diets and dry matter intake dmi levels suggesting that a static conversion factor fails to describe the biology according to an article published recently in the journal of animal science. Dietary energy and digestibility of complex foods can be affected by the content and type of dietary fiber. Relationship between metabolizable energy intake and diet dry matter concentration of a total dietary fiber b neutral detergent fiber and c soluble fiber in humans fed diets varying in fat and fiber content.

Energy balance is achieved when input or dietary energy intake is equal to output or energy expenditure plus the energy cost of growth in childhood and pregnancy or the energy cost to produce milk during lactation fao 2004.