What is the type of energy remaining after taking into consideration losses from both fecal matter and urine?

The correct answer is metabolizable energy. This term specifically refers to the amount of energy that is available to the body after accounting for losses from digestion, specifically losses in the form of fecal matter and urine.

Metabolizable energy is calculated by taking the gross energy (the total energy content of food) and subtracting the energy lost in feces (undigested food) and the energy lost in urine (the products of metabolic processes). This energy is what can be utilized by the body for maintenance, reproduction, and other physiological functions.

Understanding metabolizable energy is crucial in nutrition and dietary planning, as it reflects the actual energy that will be accessible after digestion and processing of food, highlighting its importance in formulating diets that meet energy needs without excess.

In contrast, gross energy represents the total energy inherent in food regardless of biological availability. Digestible energy is the portion of gross energy that is actually absorbed and utilized by the organism, only accounting for fecal losses, not urinary losses. Net energy, meanwhile, corresponds to the energy available for maintenance and growth after metabolic processes, but it does not consider fecal energy losses as part of its calculation.